What Is the Best Storage Temperature for LiFePO4 Batteries During Long-Term Storage?
Lithium Iron Phosphate (LiFePO4) batteries are well known for their exceptional cycle life, safety, and stability. That’s why they’re widely used in solar storage, RVs, telecom systems, and industrial backup applications. But when it comes to long-term storage—such as during off-seasons or extended downtime—many users overlook the importance of proper storage temperature, which can significantly impact battery health and capacity retention.
At HIMAX Electronics, we design and manufacture reliable LiFePO4 battery packs for demanding applications. In this article, we explain the best practices for storing LiFePO4 batteries long-term, with a focus on optimal temperature conditions to avoid capacity loss and damage.
Why Storage Temperature Matters
Even when not in use, lithium batteries undergo slow chemical reactions and self-discharge. Extreme temperatures—either too hot or too cold—can accelerate cell degradation, shorten lifespan, and reduce available capacity once reactivated.
Proper storage conditions are essential to:
- Prevent permanent loss of capacity
- Avoid swelling or internal damage
- Maintain safety and performance when reinstalled
Optimal Storage Temperature for LiFePO4 Batteries
According to industry standards and HIMAX Electronics testing data, the best storage temperature range for LiFePO4 batteries is :
Recommended Long-Term Storage Temperature:
10°C to 25°C (50°F to 77°F)
This range minimizes the rate of chemical aging and maintains the integrity of cell materials over months or even years.
Acceptable Short-Term Storage Range:
🔹 -10°C to 35°C (14°F to 95°F)
This range is safe for temporary storage (under 3 months), but long-term exposure should be avoided.
Additional Storage Best Practices from HIMAX Electronics
1. Store at Partial State of Charge
For long-term storage (3 months or more), we recommend charging the battery to 40–60% before storage—not 100%.
This helps prevent over-voltage stress and leaves enough buffer for self-discharge.
2. Avoid Moisture and Humidity
Store batteries in a dry, ventilated space to prevent oxidation and internal corrosion. HIMAX batteries come with protective casings, but environmental moisture still poses a risk over time.
3. Check Every 3–6 Months
For extended storage periods, we advise checking voltage and state of charge at least twice a year. Recharge if the voltage drops below 3.2V per cell, or ~12.8V for a 4S pack.
4. No Metal Contact or Stack Pressure
Make sure terminals are insulated, and no heavy objects are stacked on the pack. Physical stress during storage can deform the casing or internal structure.
HIMAX Electronics Quality Commitment
At HIMAX Electronics, we build LiFePO4 battery packs using A-grade cells and advanced Battery Management Systems (BMS) to protect against overcharge, overdischarge, and thermal abuse. For our customers storing batteries in off-grid or backup scenarios, we also provide:
- Custom storage enclosures with thermal insulation
- Smart BMS with low-power sleep mode
- Documentation for safe transportation and storage
Summary: Best Storage Practices for LiFePO4 Batteries
| Parameter | Recommended Value |
| Storage Temperature | 10°C to 25°C (ideal), -10°C to 35°C (short-term) |
| State of Charge (SOC) | 40% to 60% before storage |
| Humidity | < 65% RH, dry and ventilated area |
| Storage Interval Check | Every 3–6 months |
Final Thoughts
Improper storage can shorten the lifespan of even the best battery. By following temperature and maintenance guidelines, you can ensure that your LiFePO4 batteries from HIMAX Electronics remain ready for service—whether next month or next year.
Need expert advice or custom LiFePO4 solutions? Contact HIMAX Electronics today and get support from our experienced battery engineers.
