News Archives - Page 3 of 73

Why Advanced Lithium Battery Technology is the Heartbeat of Modern Vehicle GPS Trackers

SHENZHEN, China – In the rapidly evolving landscape of fleet management, asset security, and personal vehicle safety, the Vehicle GPS Tracker has become an indispensable tool. These compact devices provide real-time location data, geofencing alerts, and critical diagnostic information. However, their reliability is fundamentally dictated by one core component: the battery. While the software and GPS modules often receive the spotlight, it is the silent, enduring power of advanced lithium batteries that truly enables 24/7 operational integrity. Companies like Shenzhen Himax Electronics Co., Ltd. are at the forefront of developing power solutions that specifically meet the unique and demanding requirements of this industry.

The Unique Power Demands of GPS Tracking Units

Vehicle GPS trackers are not like everyday consumer electronics; their operational profile presents distinct challenges that not all batteries are equipped to handle.

Long Operational Life & Low Self-Discharge: Many trackers, especially those used for asset tracking, can spend months, or even years, installed in a vehicle without regular charging cycles. A standard battery would self-discharge and fail long before its intended mission is complete. Advanced lithium batteries, such as the HiMAXBATT series, are engineered with extremely low self-discharge rates, ensuring they retain their charge for extended periods and are ready to transmit data when needed.

Extreme Temperature Tolerance: A vehicle’s environment is harsh. From the freezing cold of a winter in northern climates to the scorching heat inside a parked car under the summer sun, temperature fluctuations are extreme. Inferior batteries can suffer from rapid capacity loss, reduced lifespan, or even catastrophic failure in these conditions. Lithium technology offers a wide operational temperature range, ensuring consistent performance from -10°C to 60°C.

High Energy Density: The most effective trackers are small and discreet, leaving minimal space for a battery. This necessitates a power source with the highest possible energy density—the amount of energy stored in a given unit of volume. Lithium batteries provide a superior energy density compared to traditional alkaline or nickel-metal hydride alternatives, allowing manufacturers to create more compact and powerful devices without sacrificing battery life.

Reliability and Safety: A tracker’s primary purpose is to be a dependable sentinel. Its battery must be utterly reliable. This involves built-in protections against common issues like short circuits, overcurrent, and over-discharge. Furthermore, robust construction is vital to prevent leakage, which could damage the sensitive electronics of the tracker itself.

custom lipo battery packs

Shenzhen Himax Electronics: Powering Connectivity with HiMAXBATT

Recognizing these critical needs, Shenzhen Himax Electronics has dedicated its engineering expertise to producing lithium batteries that serve as the dependable foundation for GPS tracking devices. The HiMAXBATT line is designed to directly address the pain points of tracker manufacturers and end-users.

HiMAXBATT batteries for GPS applications prioritize longevity and stability. By utilizing high-quality raw materials and precise manufacturing processes, Himax ensures each cell delivers on its promised capacity and cycle life. This commitment to quality translates directly to reduced maintenance costs, fewer false alerts caused by power failure, and ultimately, more trustworthy data for businesses relying on these tracking systems.

For trackers with more frequent reporting intervals or those that incorporate additional features like Bluetooth, accelerometers, or continuous remote control blocking capabilities, Himax offers robust lithium polymer (Li-Po) solutions. These batteries provide the necessary rechargeable power and high discharge rates while maintaining the compact form factor essential for hidden installations.

The Future is Powered by Intelligence

The next frontier for vehicle tracking is not just about location, but about predictive intelligence. Future trackers will analyze driving patterns, predict maintenance needs, and integrate deeper with IoT ecosystems. This increased processing power will demand even more from their batteries.

Innovators in the battery space are already responding. The focus is on enhancing energy density even further and integrating smarter Battery Management Systems (BMS) at the cell level. This allows for more accurate state-of-charge monitoring and communication with the tracker itself, enabling end-users to receive precise alerts about the battery’s health long before it depletes.

Conclusion: The Unseen Engine of Security

In the world of GPS tracking, the most sophisticated software is rendered useless without a reliable power source. The battery is the unsung hero, the unseen engine that powers global connectivity and security. As the market continues to grow and technology advances, the partnership between GPS tracker manufacturers and specialized battery companies like Shenzhen Himax Electronics will become increasingly crucial. It is this synergy that will drive the innovation needed to create ever-more reliable, efficient, and intelligent tracking solutions for a connected world.

About Shenzhen Himax Electronics Co., Ltd.:
Shenzhen Himax Electronics Co., Ltd. is a specialized manufacturer and supplier of high-quality lithium batteries. Its HiMAXBATT product line serves a wide range of applications, including GPS tracking devices, IoT sensors, security systems, and consumer electronics. The company is committed to providing reliable, safe, and innovative power solutions supported by strong engineering and customer service.

August 25, 2025

Lithium-ion Battery Wholesale, News

Why a 36V 100Ah PVC Pack Battery Is Transforming Outdoor Agricultural Robots

In the fast-evolving world of agricultural technology, power solutions are becoming just as critical as robotics and AI themselves. Farmers demand energy systems that are safe, durable, and capable of withstanding harsh outdoor conditions. Himax, a leading innovator in custom lithium battery pack solutions, has introduced a breakthrough product — a 36V 100Ah PVC pack battery tailored specifically for agricultural robots. Designed to function reliably between -20℃ and 60℃, the battery demonstrates how the right combination of engineering, materials, and smart communication features can redefine outdoor farming applications.

How Agricultural Robots Depend on Reliable Energy

Agricultural robots are no longer a futuristic concept; they are working in fields worldwide, handling tasks such as weeding, spraying, planting, and harvesting. However, the efficiency of these machines depends heavily on the performance of their batteries. Standard power packs are often challenged by demanding field conditions: dust, moisture, fluctuating temperatures, and physical impact.

This is where the 36V 100Ah PVC pack battery stands out. Not only does it provide the large energy capacity needed for extended field operations, but it also integrates protective features that ensure safe and consistent performance. In agricultural settings, reliability is not optional; it is the very foundation of productivity. Himax understood this reality and engineered a product to match.

Why the 36V 100Ah Battery Is a Game-Changer

The new Himax PVC battery introduces several innovations that directly address challenges faced by agricultural robots:

Temperature Tolerance:
Farmers work in diverse climates, from frosty winters to scorching summers. The battery’s operational range of -20℃ to 60℃ ensures that robots never face downtime due to weather. This wide range also extends the battery’s appeal to global markets, from Northern Europe to Middle Eastern deserts.

LED Display for Real-Time Monitoring:
A built-in LED display gives operators instant insight into the state of charge and performance. For farmers working long hours, this removes the guesswork, providing confidence that the machine will finish its task before recharge.

CAN BUS Communication:
In modern robotics, data communication is vital. The battery supports CAN BUS protocol, allowing seamless integration with robot control systems. This enables features such as predictive maintenance, accurate battery health reporting, and performance optimization during heavy workloads.

Thermistor Protection:
Overheating is a frequent risk in outdoor environments, especially under heavy mechanical loads. The battery includes thermistors to continuously monitor internal temperature, ensuring that the system can prevent damage before it happens.

Epoxy Board Reinforcement:
Perhaps one of the most innovative design choices is the inclusion of an epoxy board around the battery cells. This extra layer acts as structural armor, preventing cell damage if the outer PVC layer cracks. Given the rugged terrain where agricultural robots operate, this protective barrier is essential for long service life.

How Himax Balanced Safety and Practicality

Designing a battery for agricultural robotics is about striking the right balance between energy density, safety, and durability. Himax engineers applied their extensive experience in lithium battery pack customization to solve real-world issues:

The 36V nominal voltage offers a sweet spot for powering motors and robotic actuators while keeping energy efficiency high.

The 100Ah capacity ensures that machines can run for extended periods without frequent recharging, a vital feature for productivity in large farmlands.

The use of PVC housing provides lightweight protection, while the epoxy reinforcement ensures additional robustness against mechanical shock.

By embedding smart communication protocols and monitoring sensors, Himax positioned the battery not only as an energy storage unit but also as a smart energy management system.

This approach is a direct reflection of Himax’s philosophy: batteries should not simply store energy; they should actively contribute to the safety, intelligence, and efficiency of the systems they power.

Why Farmers and Robotics Companies Should Care

The agricultural industry is undergoing a profound transformation. Labor shortages, rising operational costs, and climate change are pushing farms to adopt smarter technologies. Robotic systems are leading the way, but without reliable power, these machines risk underperforming or failing in the field.

By offering robust outdoor usability, intelligent monitoring, and integrated communication, Himax’s 36V 100Ah PVC pack battery solves one of the most pressing challenges: how to ensure robots work continuously in unpredictable environments. This makes the battery an attractive solution not only for agricultural robots but also for outdoor drones, autonomous vehicles, and mobile industrial systems.

Furthermore, by extending service life and preventing costly failures, the battery directly supports farmers’ bottom lines. Reduced maintenance costs and improved reliability translate into higher return on investment for robotic deployments.

How Safety Innovations Drive Market Confidence

The addition of epoxy boards to guard against PVC damage is more than a technical improvement — it represents Himax’s commitment to proactive safety. While many batteries rely solely on casing materials for protection, Himax anticipated real-world scenarios: robots hitting rocks, machines tipping over, or external impacts in the field. By anticipating failure points, the company provided a solution that builds trust among robotics manufacturers and end users alike.

Equally important, the CAN BUS integration ensures compliance with advanced robotics standards, where interoperability and data-driven insights are increasingly valued. This future-proofs the battery, allowing it to integrate seamlessly with evolving agricultural technologies.

Looking Toward the Future of Agricultural Robotics

The launch of the 36V 100Ah PVC battery signals more than just a new product release. It highlights how specialized energy solutions can directly drive innovation in agriculture. As farms around the world adopt autonomous robots to increase efficiency and reduce dependence on human labor, the demand for durable, intelligent, and safe batteries will only grow.

Himax is positioning itself at the forefront of this shift. By continuously investing in custom pack design, advanced protection systems, and integrated communication technologies, the company is not just supplying batteries — it is powering the future of farming.

Conclusion: Why Himax Leads the Way

The agricultural sector is at a crossroads, where innovation determines competitiveness and sustainability. Reliable energy storage sits at the heart of this transformation. Himax’s 36V 100Ah battery pack, with its ability to withstand extreme temperatures, communicate with robotic systems, and offer robust protection against external damage, provides a benchmark for the industry.

From LED monitoring displays to CAN BUS communication and epoxy reinforcement, every element reflects Himax’s commitment to delivering more than just energy — it delivers confidence, safety, and long-term performance. For robotics developers and farmers alike, this product is a clear answer to the question: Why do the right batteries matter in agriculture?

The answer is simple: because with Himax powering the field, farming’s future looks smarter, safer, and more sustainable.

August 22, 2025

LifePO4 Battery, News

How LiFePO4 Batteries Are Transforming Solar Street Lighting: The 12V 20Ah Advantage

12V 20Ah Custom Lithium Battery Pack Solar Street Lighting Battery

In the rapidly evolving world of renewable energy, solar street lighting is emerging as a cost-effective, eco-friendly, and sustainable alternative to traditional street lights. At the core of this technology lies the choice of battery — the crucial component that stores solar energy for use during the night. Over the past decade, lithium iron phosphate (LiFePO4) batteries have revolutionized the performance, lifespan, and reliability of solar lighting systems. Among these, the 12V 20Ah LiFePO4 battery has become a standout choice for municipalities, private developers, and off-grid communities alike. Shenzhen Himax Electronics Co., Ltd., a battery manufacturer with over 13 years of experience in lithium battery solutions, has been at the forefront of producing high-quality, customized LiFePO4 batteries that meet the unique demands of solar street lighting worldwide.

The shift from lead-acid batteries to lithium-based energy storage solutions has been driven by the need for higher efficiency, longer cycle life, and better performance in extreme temperatures. LiFePO4 batteries, a subtype of lithium-ion technology, offer a unique blend of stability, safety, and longevity, making them ideal for outdoor and unattended applications like solar street lights. With a nominal voltage of 12V and a capacity of 20Ah, these batteries can power modern LED street lights for extended periods, ensuring reliable illumination even after cloudy days. Unlike older technologies, LiFePO4 batteries maintain a high depth of discharge without significant capacity loss, meaning they can deliver consistent lighting performance over thousands of charge-discharge cycles.

From a technical standpoint, the 12V 20Ah LiFePO4 battery’s advantages begin with its energy density and durability. This battery type offers a cycle life of over 2000 cycles at 80% depth of discharge, compared to around 500 cycles for lead-acid batteries. In solar street lighting applications, where batteries are charged and discharged daily, this difference translates into years of extra service life. Additionally, LiFePO4 chemistry is inherently safer due to its stable cathode material, which resists thermal runaway and reduces the risk of fire or explosion — a critical factor for public infrastructure. The built-in Battery Management System (BMS) further enhances safety by preventing overcharging, over-discharging, and short-circuiting, ensuring consistent and reliable operation throughout the battery’s lifespan.

Environmental resilience is another key reason why 12V 20Ah LiFePO4 batteries are preferred for solar street lighting. These systems often operate in harsh outdoor conditions, from freezing winters to scorching summers. LiFePO4 batteries can function effectively in temperatures ranging from -20°C to 60°C without significant performance degradation. For cities and rural communities in regions with extreme climates, this stability ensures uninterrupted lighting and lower maintenance costs. In contrast, many alternative battery types suffer from capacity loss or failure under such conditions, leading to more frequent replacements and higher operational expenses.

Economic benefits also play a major role in the adoption of LiFePO4 technology. While the initial purchase price of a 12V 20Ah LiFePO4 battery may be higher than that of a lead-acid equivalent, the long-term savings are substantial. The extended lifespan, reduced need for maintenance, and higher energy efficiency mean that the total cost of ownership is significantly lower. For municipalities managing hundreds or thousands of street lights, these savings can quickly add up, freeing up budget for other public projects. Moreover, the lighter weight of LiFePO4 batteries reduces transportation and installation costs, especially in remote or hard-to-reach areas.

Performance consistency is equally important in public lighting systems. Solar street lights need to provide dependable illumination every night, regardless of weather conditions or seasonal variations in sunlight. The high efficiency of LiFePO4 batteries allows them to store and deliver energy more effectively, ensuring that lights stay on throughout the night, even during extended periods of low solar input. This reliability enhances public safety, improves community aesthetics, and supports local businesses that rely on nighttime visibility. By choosing 12V 20Ah LiFePO4 batteries, project planners can ensure that their lighting systems deliver maximum value to residents and stakeholders.

Another important factor in the growing popularity of 12V 20Ah LiFePO4 batteries is their environmental friendliness. Unlike lead-acid batteries, which contain toxic materials that require careful disposal, LiFePO4 batteries are made with more sustainable materials and have a lower environmental impact. They are also more energy-efficient in their charging and discharging processes, reducing overall energy waste. For governments and organizations committed to green initiatives and reducing their carbon footprint, this makes LiFePO4 an obvious choice for solar street lighting projects.

Customization capabilities also contribute to the widespread adoption of LiFePO4 technology. Shenzhen Himax Electronics Co., Ltd., for example, offers tailored battery solutions to meet specific project requirements. This includes adjustments in size, capacity, connectors, and casing to fit seamlessly into different solar lighting designs. For specialized applications such as coastal areas with high humidity or desert regions with intense heat, Himax can adapt the battery’s construction to ensure maximum durability and performance. This flexibility allows clients to optimize their solar lighting systems for local conditions and operational goals.

Globally, the demand for efficient and sustainable solar lighting solutions is increasing as more regions transition to renewable energy. Governments are investing in smart city infrastructure, rural electrification projects, and disaster-resilient power systems. The 12V 20Ah LiFePO4 battery plays a central role in these initiatives, offering the reliability, efficiency, and longevity needed to ensure success. Whether used in urban streets, rural paths, parking lots, or industrial complexes, this battery type enables solar lighting to deliver consistent benefits for years without excessive maintenance or costly replacements.

In conclusion, the 12V 20Ah LiFePO4 battery is far more than just a power source for solar street lights — it is a transformative technology that is reshaping the way communities approach public lighting. Its superior safety, longevity, environmental resilience, and cost-effectiveness make it the preferred choice for modern solar lighting projects. Shenzhen Himax Electronics Co., Ltd. continues to lead the market in producing high-quality, customizable LiFePO4 batteries, empowering cities and organizations worldwide to adopt greener, more sustainable, and more efficient lighting solutions. As the push for renewable energy accelerates, the role of advanced battery technologies like LiFePO4 will only grow, illuminating not just our streets, but also the path toward a cleaner and more sustainable future.

August 22, 2025

Li-Polymer Battery, News

Charge Retention of Li-Polymer (LiPO) Battery Packs

Himax - 14.8V custom lithium battery pack

1. What is Charge Retention?

Charge retention refers to a battery’s ability to retain its stored electrical energy over time when not in use. This is inversely related to the self-discharge rate, which measures the rate at which a battery loses capacity on its own, without any load.

For LiPO batteries, charge retention is one of their strengths compared to older technologies like NiCd or NiMH.

2. Typical Self-Discharge Rates for LiPO Batteries

Condition	Monthly Self-Discharge Rate	Explanation
New, premium quality cells	1% – 3%	High manufacturing quality, low internal resistance
Typical LiPO cells	3% – 5%	Industry average
Aged or damaged cells	5% – 10%+	Increased impedance, side reactions inside cell
Stored in hot conditions	Up to 15%+	Accelerated chemical reactions

Note: LiPO batteries have lower self-discharge than NiMH (≈30%/month) or lead-acid (≈5–10%/month).

custom lipo battery packs

3. Technical Factors Influencing Charge Retention

A. Electrochemical Stability

LiPO batteries use lithium-ion intercalation chemistry.

They typically use a lithium cobalt oxide (LCO) or nickel manganese cobalt (NMC) cathode with a carbon-based anode.

The tight molecular structure of these materials leads to low ionic leakage, reducing self-discharge.

B. Temperature

Heat accelerates electrolyte decomposition and SEI (solid electrolyte interphase) layer growth.

Cold slows down ion mobility, reducing discharge rate — but too cold can cause lithium plating when recharging.

Temperature	Expected Self-Discharge Impact
0–15°C	Minimal, ~1–2%/month
20–25°C	Normal, ~2–4%/month
30–40°C	Elevated, ~4–6%/month
>45°C	Risk of degradation, >10%/month

C. State of Charge (SoC) During Storage

Storing LiPO batteries at:

100% SoCaccelerates electrolyte oxidation and gas formation
0% SoCcan cause over-discharge and permanent damage
Ideal: 40–60% SoCfor long-term storage (also called “storage mode”)

D. Manufacturing Quality

Well-balanced cells, high-quality separator materials, and uniform coatings lead to lower parasitic losses.
Example: Grade A 18650 LiPOpouch cells can show <2% self-discharge per month under optimal storage.

4. Real-World Charge Retention Over Time

Let’s assume a 5000mAh 3S 11.1V LiPO pack is stored at 50% SoC (~11.4V) at room temperature:

Time Stored	Estimated Retained Charge	Assumed Conditions
1 month	~4750–4900 mAh	2–5% loss
3 months	~4500–4750 mAh
6 months	~4100–4500 mAh
12 months	~3700–4200 mAh	20–30% loss in worst case

After 6 months or more, periodic checks and balance charging are recommended.

5.Risks of Poor Storage (Charge Retention Failure)

Problem	Cause	Consequence
Over-discharge	Stored at 0% SoC	Permanent capacity loss, safety risk
Cell swelling	Stored at high SoC + heat	Gas formation in electrolyte
Voltage imbalance	Poor cell matching + time	Reduced performance and cycle life
Thermal runaway	Overcharging or long-term full charge in heat	Fire/explosion risk

6.How to Maximize Charge Retention

Parameter	Recommendation
Storage SOC	40–60%
Storage Temp	15–25°C
Humidity	<60% RH (dry storage is best)
Charger use	Use “Storage Mode” if available
Inspection	Check voltage every 1–2 months

Example Storage Voltage

For 3S (11.1V) battery: store at 11.1V–11.4V
For 4S (14.8V) battery: store at 14.8V–15.2V

7.Charge Retention vs. Other Battery Types

Battery Type	Monthly Self-Discharge Rate	Charge Retention Advantage
LiPO	2–5%	🔹 Excellent
LiFePO₄	1–3%	🔹 Excellent
NiMH	20–30%	🔻 Poor
Lead-Acid	5–10%	⚠️ Moderate
Alkaline	~0.3% (primary)	🔹 Excellent (non-rechargeable)

8. Internal Mechanisms of Self-Discharge in LiPO

SEI Layer Instability:Breakdown or growth of the protective layer on the anode.
Electrolyte Decomposition:Accelerated by temperature and SoC.
Parasitic Currents:Micro-leakage through separator or from cell defects.
Impedance Increase:As battery ages, internal resistance increases → higher leakage current.

9. Industrial Standards/Testing for Charge Retention

Standards for charge retention testing:

IEC 61960– Secondary lithium cells and batteries
UL 1642– Safety for lithium batteries
UN 38.3– Transportation testing
JEITAor GB/T 18287-2013 – Often used in Chinese battery manufacturing

Testing typically involves storing a fully charged cell at room temperature for 28 days, followed by capacity test to evaluate % charge retained.

Conclusion

LiPO batteries have excellent charge retention (~2–5% per month under good conditions).

Long-term storage without proper SoC or at high temps can result in serious damage and reduced lifespan.

Proper storage, routine maintenance, and storage at optimal voltage and temperature are critical for extending both charge retention and overall battery life.

August 21, 2025

Li-Ion Battery, News

Comparison of 18650 & 21700 lithium-ion cells from Samsung SDI, LG Energy Solution, Panasonic/Sanyo, and mainstream Chinese manufacturers (like EVE, Lishen, CATL, BAK, DLG, etc.).

The comparison focuses on key battery characteristics: performance, reliability, energy density, cycle life, safety, and price.

Battery Cell Manufacturer Comparison

(18650 & 21700 Li-ion Cylindrical Cells)

Feature / Brand	Samsung SDI	LG Energy Solution	Panasonic / Sanyo	Chinese Brands (EVE, Lishen, BAK, etc.)
Cell Types	18650, 21700	18650, 21700	18650, 21700	18650, 21700, 26700, custom
Energy Density (Wh/kg)	250–270	240–260	260–280, highest	200–250 average
Cycle Life (0.5C–1C)	800–1200	800–1000	1000–1500	500–800 (varies by brand)
Max Discharge Rate	5C–15C (some power cells 30C burst)	3C–10C	3C–10C	2C–10C (some high-power cells 15C)
Consistency	★★★★☆ (High) (±1–2%)	★★★★☆ (High) (±1–2%)	★★★★★ (Excellent) (±1% or better)	★★☆☆☆ (varies greatly) (±3–8%typical)
Charge Temperature Toerance	0°C to 45°C	0°C to 45°C	0°C to 50°C	0°C to 45°C
Discharge Temperature Tolerance	–20°C to 60°C	–20°C to 60°C	–30°C to 60°C	–10°C to 55°C typical
Self-Discharge	<2%/month	<2%/month	<1.5%/month	2–5%/month (more variation)
Safety / QC	★★★★☆ (strong BMS and test history)	★★★★☆	★★★★★ (Tesla supplier level QC)	★★☆☆☆ (some lack full QC)
Availability	Global, broad range	Global, broad range	Limited for public, OEM focused	Widely available (Alibaba, etc.)
Typical Use Cases	Power tools, EV packs, e-bikes	E-bikes, energy storage	EVs (Tesla), industrial applications	Flashlights, scooters, budget power banks

Performance Summary by Format

Brand	Best 18650 Model	Best 21700 Model
Samsung SDI	INR18650-30Q (3000mAh, 15A)	INR21700-50E (5000mAh, 9.8A)
LG Energy	INR18650-MJ1 (3500mAh, 10A)	INR21700-M50LT (5000mAh, 7.3A)
Panasonic	NCR18650GA (3450mAh, 10A)	NCR21700A (5000mAh, 10A)
Chinese Brands	BAK N18650CK (2600mAh, 5C)	EVE INR21700/50V (5000mAh, 10A)

Pros & Cons Overview

Brand	Pros	Cons
Samsung	High energy density, reliable, widely used, good balance	Can be costly, some fakes on market
LG	Strong performance, efficient cells, trusted OEM	Some heat sensitivity on older models
Panasonic	Most stable and long-life, best QC (used by Tesla)	Price premium, less accessible
Chinese Brands	Cheap, good for mass deployment, wide range	Less consistency, shorter lifespan, more fakes and spec inflation

Notes:

Chinese manufacturers are improving rapidly (EVE, Lishen, REPT, CALB, etc.) and some high-end cells now rival Korean/Japanese brands.

Fakes are common, especially for Samsung/LG/Panasonic 18650 cells sold through unofficial channels.

Always verify with datasheets and request MSDS + test reports when sourcing.

August 21, 2025

Lithium-ion Battery Wholesale, News

Comparison of Li-ion, LiPO (Lithium Polymer), and LiFePO₄(Lithium Iron Phosphate) batteries advantages and disadvantages.

1. Li-ion (Lithium-ion)

Typically refers to cylindrical (e.g., 18650 li-ion) or prismatic cells using NMC or NCA chemistry.

✅ Advantages:

High energy density → longer run time for given size/weight.

Relatively long cycle life (500–1000+ cycles).

Low self-discharge (~1–2% per month).

Widely available and mature technology.

Stable form factor (especially cylindrical 18650/21700 cells).

❌ Disadvantages:

Thermal runaway risk if punctured or overcharged.

Needs precise BMS protection to ensure safety.

Capacity drops in high temperature or over time.

2. LiPo (Lithium Polymer)

A subset of Li-ion using a gel-like electrolyte, typically found in soft pouch cells.

✅ Advantages:

Very lightweight and thin, excellent for drones, RC, and custom-fit designs.

High discharge rates (C-rate) – great for burst power.

Flexible shapes/sizes available.

❌ Disadvantages:

Less mechanically stable – more prone to swelling and damage.

Shorter cycle life (300–500 cycles) compared to cylindrical Li-ion.

High risk of fire if punctured or improperly charged.

Requires very careful charging (must use a LiPo charger with balance).

3. LiFePO₄ (Lithium Iron Phosphate)

Known for high safety and longevity, commonly used in solar, UPS, and EV applications.

✅ Advantages:

Extremely long cycle life (2000–5000+ cycles).

Very safe – no thermal runaway or fire under normal conditions.

Wide temperature tolerance.

Flat voltage curve → consistent power output.

Environmentally friendlier than cobalt-based cells.

❌ Disadvantages:

Lower energy density (~90–120 Wh/kg) → larger and heavier for same capacity.

More expensive per Wh in some cases (though decreasing).

Lower voltage per cell (3.2 V nominal vs 3.7 V for Li-ion) → may require more cells in series.

Battery Technology Comparison Table

Feature	Li-ion	LiPO (Lithium Polymer)	LiFePO₄ (Lithium Iron Phosphate)
Nominal Voltage	3.6–3.7 V	3.7 V	3.2 V
Specific Energy Density	180–250 Wh/kg	130–200 Wh/kg	90–140 Wh/kg
Volumetric Energy Density	400–700 Wh/L	300–500 Wh/L	220–350 Wh/L
Cycle Life	500–1000+	300–500	2000–5000+
Discharge Rate (C-rate)	Moderate (1C–5C typical,some up to 8C)	High (up to 50C)	Moderate (1C–3C, some up to 10C)
Weight/Size Efficiency	compact, cylindrical	thin, flexible	bulky, heavy
Safety	Moderate (needs BMS)	Low (swelling, fire risk if damaged)	Very High (thermally stable)
Temperature Tolerance	0°C to 45°C	0°C to 40°C	-20°C to 60°C
Form Factor	Cylindrical / prismatic	Flexible pouch	Cylindrical / prismatic
Self-Discharge Rate	~2%/month	~5%/month	~3%/month
Best Use Cases	Consumer electronics, tools	Drones, RC, wearables	Solar, EVs, UPS, storage

Energy Density Comparison (Chart)

Battery Type	Wh/kg (Energy/Weight)	Wh/L (Energy/Volume)
Li-ion	180–250 Wh/kg	400–700 Wh/L
LiPO	130–200 Wh/kg	300–500 Wh/L
LiFePO₄	90–140 Wh/kg	220–350 Wh/L

Li-ion: Best balance of size and energy → great for compact applications

LiPo: Light and high-power burst, but less dense and less safe

LiFePO₄: Bulky, but ultra-long life and very safe

August 21, 2025

12V LifePO4 Battery, News

Materials of lithium iron phosphate batteries

Lithium iron phosphate batteries (LiFePO₄ or LFP batteries) are a type of lithium-ion battery known for their long cycle life, thermal stability, and safety. Here are the key materials used in lithium iron phosphate batteries

1. Cathode (Positive Electrode)

Composition:

Chemical Formula: LiFePO₄

Structure: Olivine-type crystal structure

Elements: Lithium (Li), Iron (Fe), Phosphorus (P), Oxygen (O)

Key Properties:

Voltage: ~3.2V nominal

Energy density: 90–160 Wh/kg (lower than NMC/NCA but safer)

Thermal stability: Decomposition starts >270°C (very stable)

Cycle life: >2000–7000 cycles depending on C-rate and depth of discharge

Advantages:

Non-toxic (compared to cobalt-based cathodes)

Environmentally friendly

Excellent thermal and chemical stability

Long calendar and cycle life

Stable discharge voltage

Disadvantages:

Lower energy density

Lower conductivity (mitigated by carbon coating and conductive additives)

Enhancements in Modern LFP:

Carbon coating (e.g., with Super P or CNT) to improve electrical conductivity

Doping with Mg, Zr, or Nb to enhance ionic conductivity and rate performance

2. Anode (Negative Electrode)

Composition:

Layered carbon structure that intercalates lithium ions

Key Properties:

Voltage: ~0.1V vs Li⁺/Li

Capacity: ~350–370 mAh/g

Material Forms: Natural graphite, synthetic graphite, mesocarbon microbeads (MCMB)

Advantages:

Proven and stable performance

Good conductivity

Widely available and low cost

Challenges:

Risk of lithium plating if charged too fast at low temperature

Potential degradation via solid electrolyte interphase (SEI) formation

Alternative Anodes:

Hard carbon: Used in LFP batteries for fast charging

Silicon or Si/C composites: Higher capacity but less stable

LTO (Li₄Ti₅O₁₂): Used in niche applications for ultra-safety and long life

3. Electrolyte

Main Composition:

Lithium Salt: LiPF₆ (lithium hexafluorophosphate)

Solvents: Typically a mix of:

EC (Ethylene Carbonate)

DMC (Dimethyl Carbonate)

DEC (Diethyl Carbonate)

EMC (Ethyl Methyl Carbonate)

Function:

Transports Li⁺ ions between cathode and anode during charge/discharge

Additives:

Vinylene Carbonate (VC): Improves SEI stability

FEC (Fluoroethylene carbonate): Enhances low-temp performance

Considerations:

Flammable → LFP’s thermal stability offsets this risk

Limited voltage stability (~4.2V), but suitable for LFP’s ~3.6V peak

4. Separator

Material:

Microporous Polyolefin:

PE (Polyethylene)

PP (Polypropylene)

PP/PE/PP multilayer films

Function:

Prevents direct contact between anode and cathode

Allows Li⁺ ions to pass through

Acts as a shutdown mechanism at high temperatures (melts and blocks ion flow)

Features:

Pore size: 20–100 nm

Thickness: 16–30 microns typically

Thermal shutdown: ~135°C (PE), ~165°C (PP)

5. Current Collectors

Cathode Side: Aluminum foil

Anode Side: Copper foil

Function: Collects and transports electrons to and from the external circuit

Electrode	Material	Function
Cathode	Aluminum foil (10–20μm)	Conducts electrons from LFP
Anode	Copper foil (8–15μm)	Conducts electrons from graphite

Reasons:

Aluminum is light and corrosion-resistant

Copper has excellent electrical conductivity

6. Binder (for electrode structure)

Cathode: Polyvinylidene fluoride (PVDF)

Anode: PVDF or carboxymethyl cellulose (CMC) + styrene-butadiene rubber (SBR)

Function: Binds active material to the current collector

7. Conductive Additives (in electrodes)

Material: Carbon black, Super P, carbon nanotubes (CNT), or graphene

Function: Improves electrical conductivity of the electrode

Summary Table

Component	Material Example	Function
Cathode	Lithium Iron Phosphate (LiFePO₄)	Stores lithium ions, provides voltage
Anode	Graphite	Stores lithium ions during charging
Electrolyte	LiPF6 in EC/DMC/DEC	Lithium ion transport medium
Separator	PE/PP microporous film	Prevents short-circuit, allows ion flow
Current Collector	Aluminum (cathode), Copper (anode)	Conducts electrons
Binder	PVDF, CMC/SBR	Holds electrode materials together
Additives	Carbon black, CNT	Enhances electrical conductivity

Use Cases of LFP Batteries

Application	Reason for Choosing LFP
Electric Vehicles (EVs)	Long life, high safety, cost-effective
Energy Storage Systems	Excellent cycle life and thermal stability
E-bikes, Power Tools	Safe and lightweight
Marine & RV Batteries	Low maintenance, good performance in heat

August 21, 2025

LifePO4 Battery, News

How Himax’s 12.8V 20Ah LiFePO4 Battery Revolutionizes Solar-Powered Bus Shelters with Lighting and Free Charging

As cities around the world strive to become smarter, greener, and more sustainable, the demand for reliable, clean energy solutions continues to rise. Urban planners and local governments are increasingly turning to renewable technologies to meet environmental targets while enhancing public services. At the heart of this transformation is energy storage — and Shenzhen Himax Electronics Co., Ltd. is leading the charge with its 12.8V 20Ah Lithium Iron Phosphate (LiFePO4) battery.

This advanced battery solution is specifically engineered for solar-powered bus shelters — structures that do more than simply offer a place to wait. With the integration of Himax’s robust and high-performance LiFePO4 battery, these shelters are now capable of delivering dependable LED lighting and free USB charging for commuters, even during overcast weather or nighttime hours. By enabling consistent and efficient power from renewable sources, Himax is helping cities modernize their infrastructure in an eco-conscious and cost-effective way.

The Growing Demand for Solar-Powered Transit Shelters

In recent years, solar-powered bus shelters have emerged as a vital component of modern urban landscapes. As municipalities aim to lower carbon emissions and promote energy efficiency, these structures provide an elegant solution: they offer shelter from the elements, improve street-level aesthetics, and harness the sun’s energy to power lighting and charging stations.

However, one of the biggest challenges in implementing solar bus shelters is ensuring reliable power storage and distribution — especially during periods of low sunlight or high usage. Without an effective energy storage system, the functionality of these shelters can be compromised, leading to dark waiting areas and unavailable charging ports. That’s where Himax’s 12.8V 20Ah LiFePO4 battery comes in, designed to ensure uninterrupted power supply in varying environmental conditions.

What Makes LiFePO4 the Ideal Battery Technology?

Lithium Iron Phosphate (LiFePO4) is widely regarded as one of the safest and most efficient lithium battery chemistries available today, making it especially suitable for public infrastructure applications. Compared to conventional lead-acid batteries or other lithium chemistries, LiFePO4 offers a superior balance of performance, safety, and longevity.

Himax’s 12.8V 20Ah battery exemplifies these benefits:

Extended Lifespan: With more than 2000–5000 charge and discharge cycles, the battery provides many years of reliable operation, dramatically outlasting traditional lead-acid batteries which often require replacement every 1–2 years.

High Energy Efficiency: The battery boasts a discharge efficiency exceeding 95%, ensuring minimal energy is wasted and maximum solar energy is converted into usable power.

Unmatched Safety: LiFePO4 chemistry is thermally and chemically stable, making it resistant to overheating, combustion, or explosion — a crucial feature for equipment installed in public spaces.

Compact and Lightweight: Up to 50% lighter than comparable lead-acid batteries, Himax’s battery reduces the complexity and labor costs of installation, while also freeing up valuable space inside enclosures.

Engineered for Smart, Self-Sufficient Bus Shelters

Himax’s 12.8V 20Ah LiFePO4 battery has been purpose-built to meet the demanding energy requirements of solar-powered bus shelters. With a practical balance between voltage, capacity, and size, the battery enables continuous power supply for a range of essential services.

Reliable Lighting: It can power 10W to 15W LED lighting systems for over 12 hours, ensuring that shelters remain well-lit from dusk until dawn, enhancing both visibility and public safety.

Convenient USB Charging: The battery supports multiple USB charging ports, allowing commuters to charge smartphones, tablets, and other devices while waiting — an increasingly expected amenity in modern urban environments.

Rapid Solar Recharge: Fully compatible with 100W to 200W solar panels, the battery charges quickly, even under partially cloudy conditions, ensuring readiness for consistent daily operation.

All-Weather Durability: Operating effectively in temperatures ranging from -20°C to 60°C, the battery is suitable for installation in diverse geographic regions, from frigid winters to scorching summers.

Benefits for Cities, Operators, and Commuters

The adoption of Himax’s LiFePO4 battery brings multiple tangible benefits to cities and transit operators — and an improved experience for daily commuters.

Reduced Energy Costs: By harnessing solar energy and minimizing grid dependency, municipalities can significantly cut electricity expenses over time.

Lower Maintenance and Replacement: The long cycle life and stable chemistry reduce the need for frequent battery replacements and maintenance work, resulting in lower operational costs and less downtime.

Enhanced Safety: Well-lit bus stops deter crime and make commuters feel safer, especially during early morning or late evening hours.

Improved Commuter Convenience: Free charging capabilities are not only a modern necessity but also help promote public transportation by adding value to the rider experience.

Environmental Impact: Switching to solar-powered infrastructure supports broader climate goals and demonstrates a commitment to sustainability and innovation.

Himax: Delivering More Than Just Batteries

What sets Himax apart is not just the quality of its products but its holistic approach to energy storage solutions. In addition to supplying high-performance LiFePO4 batteries, the company offers complete systems and services tailored for solar infrastructure.

Custom Battery Management Systems (BMS): Himax equips its batteries with intelligent BMS that monitor and protect against overcharging, over-discharging, short circuits, and temperature extremes — ensuring the longest possible lifespan and safest operation.

Remote Monitoring: Optional remote monitoring capabilities allow for real-time diagnostics and performance tracking, enabling proactive maintenance and reducing the risk of unexpected failures.

Flexible, Scalable Solutions: Himax’s systems are highly adaptable, supporting both small installations for neighborhood bus stops and larger deployments in high-traffic transit hubs.

Conclusion

As cities embrace the vision of cleaner, smarter, and more connected infrastructure, solar-powered bus shelters stand out as a practical and visible symbol of progress. Himax’s 12.8V 20Ah LiFePO4 battery plays a pivotal role in this evolution, enabling dependable lighting and mobile charging powered entirely by the sun.

With its superior safety, efficiency, and long lifespan, the battery delivers unmatched value for public infrastructure projects. But more than that, it contributes to a better urban experience — safer streets, more connected commuters, and greener cities.

By combining cutting-edge battery technology with full-system support, Himax is helping urban centers across the globe take a confident step into a more sustainable future — one bus stop at a time.

August 11, 2025

LifePO4 Battery, News

How a 12V 20Ah LiFePO4 Battery Powers Solar Display Systems at Bus Stops

In the growing landscape of smart cities and sustainable transportation, Shenzhen Himax Electronics Co., Ltd. is playing a vital role by delivering cutting-edge lithium battery solutions. One of its latest highlights is the deployment of 12V 20Ah LiFePO4 (Lithium Iron Phosphate) batteries in solar-powered digital display systems at bus stations. These compact yet powerful batteries are proving to be a reliable energy source for transit signage, particularly in off-grid or semi-grid environments.

As public infrastructure embraces renewable energy and digital transformation, the intersection of solar technology and energy storage becomes critical. Display panels at bus stops provide real-time schedule updates, maps, lighting, and security alerts. When powered by solar energy, they require a battery system that is safe, durable, low-maintenance, and able to operate under fluctuating environmental conditions. Himax’s 12V 20Ah LiFePO4 battery is designed to meet these exact needs.

The Challenge of Powering Off-Grid Transit Displays

Solar-powered bus stop displays are an innovative solution in cities aiming to reduce their carbon footprint while improving public service accessibility. These display systems often operate in locations where grid access is limited, unreliable, or cost-prohibitive. This creates a demand for a sustainable, autonomous power system capable of delivering stable voltage for extended periods.

Traditional lead-acid batteries used in some installations face challenges like short cycle life, frequent maintenance, and poor performance in extreme weather. Similarly, other lithium chemistries may offer high energy density but are less stable in high-temperature or high-discharge environments.

This is where LiFePO4 chemistry excels. Known for its thermal and chemical stability, high safety profile, and long lifecycle, LiFePO4 is now widely accepted as the preferred battery technology for solar and storage applications.

Himax’s 12V 20Ah LiFePO4 Battery: Designed for Public Infrastructure

Shenzhen Himax Electronics Co., Ltd. has designed its 12V 20Ah LiFePO4 battery pack specifically with solar-powered equipment in mind. Here are the main features that make it ideal for bus stop digital signage:

1. High Safety and Stability

LiFePO4 batteries are inherently more stable than other lithium chemistries, reducing the risk of thermal runaway, combustion, or explosion. This is especially crucial in unattended public spaces where battery systems must function safely for years.

2. Long Cycle Life

The Himax 12V 20Ah battery can achieve over 2000–3000 charge/discharge cycles under standard conditions. For a solar-powered display that charges during the day and discharges at night, this equates to 5–8 years of reliable use.

3. Wide Operating Temperature

With an operating range of –20°C to 60°C, the battery can perform efficiently in various climate conditions, from hot urban centers to colder rural zones. This versatility is essential for deployments across geographically diverse bus networks.

4. Built-In Battery Management System (BMS)

Each Himax battery pack integrates an intelligent BMS that ensures protection against over-voltage, under-voltage, over-current, and short-circuits. It also balances cells to extend battery life and ensures the system runs reliably without manual intervention.

5. Compact and Lightweight

At just a fraction of the size and weight of traditional sealed lead-acid batteries, the 12V 20Ah LiFePO4 battery can be easily installed in tight enclosures beneath the display units or within the solar cabinet.

6. Eco-Friendly and Low Maintenance

With no memory effect and very low self-discharge (less than 3% per month), the battery remains operational even after long idle periods. It is also free from heavy metals and toxic chemicals, aligning with environmental sustainability goals.

Real-World Applications: Bus Stations Go Solar

In recent pilot projects across several smart city zones, Himax’s 12V 20Ah LiFePO4 batteries have been installed in solar-powered bus stops equipped with digital displays. These systems include LED schedules, ambient lighting, emergency buttons, and even CCTV functionality, all powered through solar panels and backed up by the Himax battery pack.

Operators report high reliability and zero maintenance complaints after over a year of use. The battery’s consistent performance—even during cloudy days or low sunlight periods—ensures uninterrupted service to passengers.

One local city official noted:
“We wanted an energy solution that wouldn’t require daily monitoring or replacements every year. Himax’s battery packs delivered exactly that—quiet reliability and performance without the headache.”

Supporting Broader Urban Sustainability

The deployment of LiFePO4 batteries in solar bus stops not only benefits public transportation but also supports larger sustainability goals. By removing dependency on the grid and diesel generators, city planners reduce emissions, lower operating costs, and create scalable solutions that can be implemented in both developed and underdeveloped areas.

Moreover, LiFePO4 batteries open the door for more features to be integrated into public infrastructure. With reliable energy storage, systems can run Wi-Fi routers, mobile charging stations, or real-time vehicle tracking displays, enhancing the commuter experience.

Himax: A Trusted Partner in Energy Storage

Shenzhen Himax Electronics Co., Ltd. is a leading provider of lithium battery pack solutions, specializing in custom LiFePO4 and NiMH battery assemblies. With over a decade of experience, automated and semi-automated production lines, and a weekly capacity of over 3 million cells, Himax supplies safe and reliable power to industries including solar, medical, industrial tools, and smart transportation.

For applications like bus stop solar systems, Himax offers a proven battery solution that balances safety, lifespan, and performance. Customers can also benefit from Himax’s engineering support and customization services to tailor the battery pack to their specific voltage, current, and enclosure needs.

The Future of Smart Transit Starts with Smart Power

As cities around the world seek energy-efficient and intelligent public infrastructure, the humble bus stop is becoming a symbol of what’s possible. Solar-powered display systems, backed by durable and high-performance LiFePO4 batteries, are paving the way forward. And companies like Shenzhen Himax Electronics Co., Ltd. are right at the heart of this transformation—powering the journey, one battery at a time.

Interested in integrating LiFePO4 batteries into your smart infrastructure project? Contact Shenzhen Himax Electronics Co., Ltd. today at https://himaxelectronics.com.

August 1, 2025

Li-Ion Battery, News

One Project, Done Right: A Step-by-Step Guide to Custom Lithium Battery Projects

Have you ever felt frustrated because a standard battery just doesn’t fit your device, fails too quickly, or doesn’t meet safety expectations? You’re not alone. Countless engineers and product teams grapple with the same issues. Custom lithium battery design isn’t just “pick a capacity and ship it”—it’s a collaborative process to craft a solution that fits your application perfectly, safely, and reliably. To demystify this journey, this guide breaks down every stage, from initial consultation to small-batch delivery, so you’ll know exactly what to expect at each step.

1. Project Consultation & Feasibility

First, we start with a conversation: Our team listens closely to your application requirements—voltage, current peaks, operating environment, temperature ranges, run-time needs, and safety standards.
Next comes the feasibility evaluation: We assess whether lithium-ion chemistry is viable for your use case, suggesting options like LFP or NMC. We’ll also share a rough timeline and cost estimate early on, so you have a clear sense of what’s possible from the start.

2. Pulling Together the Requirement Form

Once we’ve aligned on the basics, it’s time to turn ideas into concrete parameters: We guide you through a concise form to capture technical details—preferred BMS communication (CANbus, UART, RS-232), connector types, capacity range, and mechanical dimensions.
Why does this matter? This structured document ensures no details slip through the cracks, letting us move from vague concepts to clear engineering specs efficiently.

3. Draft Plan & Estimated Delivery Schedule

With your requirements in hand, we share a preliminary project outline: This includes 3D renderings, wiring diagrams, and a tentative production timeline (typically 12–15 weeks).
Your role here? Review the plan and confirm that the model, specs, and delivery window align with your expectations.

4. Technical Specification & 3D Design Phase

Once the draft plan is confirmed, we shift to visualizing your battery early: You’ll receive a detailed spec pack featuring a 3D model, wiring diagram, BOM lists, thermal layout, and housing design.
Collaboration is key here: We identify potential conflicts upfront (e.g., connector clearance issues, heat dissipation needs) and iterate until the design “clicks.”

5. Prototype (NPI) Production & Testing

After finalizing the design, we move to prototype production—starting with rigorous cell matching: Individual cells are sorted by voltage (±5 mV), internal resistance (±15 mΩ), and capacity (±5 mAh) to ensure consistency and safety.
Next, we run a full test regime: This includes cycle life testing (≥ 100 cycles), short-circuit checks, overcharge/over-discharge protection verification, thermal management tests, and UN38.3 compliance verification.
We also focus on industry-grade BMS debugging: Validating communication stability (CANbus/UART/RS-232), overvoltage/undervoltage protection, and temperature fault triggers.

6. Feedback & Iteration

Once testing wraps up, we share a detailed report—and invite your feedback for minor adjustments. For example, if voltage sag exceeds expectations or casing geometry needs tweaks, we’ll fine-tune the design promptly.
The goal? Fast resolutions that keep your project momentum intact.

7. Finalization & Production Preparation

After iterations, we formalize standardized documentation: This includes all technical specs, test procedures, assembly instructions, and packaging guidelines.
We also lock in quality control protocols: These cover cell matching, insulation testing, thermal runaway protection, and leakage inspection.
Additionally, we handle logistics & compliance: From packaging design (IP 67/68) to UN38.3 shipping certification and import/export documentation, we’ve got you covered.

8. Small-Batch Delivery

Finally, we ensure careful packaging: Anti-static wrap, shock-absorbent inserts, and robust outer cases guarantee your batteries arrive safely.
You’ll stay in the loop with delivery confirmations: We notify you at every milestone—shipped, in transit, customs cleared, delivered.
And our support doesn’t end there: Post-shipment, we’re available for performance monitoring, firmware updates, or lifecycle testing—whatever keeps your project on track.

Custom lithium battery to Help You Kickstart the Project

To streamline your start, we’ve prepared key resources:

✅ A downloadable Project Requirement Form to quickly fill in your specs
✅ A BMS Communication Matrix to identify which protocol suits your device
✅ A Prototype Test Report Template to clarify what we test and how we measure results
(Download links or CTAs can be inserted here)

Our Customer Cases

For example, one of our medical equipment clients needed a slim, high-capacity battery for long-duration operation. Their off-the-shelf options failed to fit the enclosure, and performance lagged.

Here’s how we solved it:
Through video consultations and rapid iterations, we converged on a viable design in just 5 weeks.
From first communication to small-batch delivery, the entire project took 12 weeks—with zero rework.

The client reported smoother integration and reliable long-term performance—exactly the outcome they needed.

Conclusion & Next Steps

In summary, building a custom lithium battery doesn’t have to be a mystery. With clear milestones, expert support, and transparent communication, you can feel confident at every phase. At Himax, we deliver more than batteries—we deliver certainty.

step-by-step guide development

Ready to start?

Upload your specs for a complimentary feasibility review
Download our requirement form
Contact Himax Battery for a personalized consultation

Let’s build the exact battery your product deserves.

August 1, 2025