It usually takes 2-3 full charge and discharge cycle to acheive battery balance and reaches its full capacity.
1. Resting Voltage at Full Charge
Nominal Voltage: A 12.8V LiFePO₄ battery (4S configuration: 4x3.2V cells) should read 13.6V when fully charged and at rest .
Voltage Range: Normal Fluctuation: 13.4V–13.6V (affected by temperature, battery age, and measurement conditions).
2. Long-Term Maintenance
Regular Equalization: Perform every 2–3 months to prevent capacity fade.
Avoid Extreme Temperatures: Store batteries in a cool, dry place (15–25°C).
Monitor Capacity: Conduct periodic 1/10C discharge tests to track health .
Conclusion
The resting voltage of 13.4V-13.6V is a critical indicator of a healthy, fully charged LiFePO₄ battery. Deviations from this value often point to charging issues, BMS misconfiguration, or aging. By following proper measurement protocols and maintenance practices, you can ensure optimal performance and longevity.
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