How to properly store a LiFePO4 battery: basic rules
The most important source of truth is the manufacturer's instructions. It is on them that you should rely first of all. But there are also general universal tips that are suitable for most lithium-iron-phosphate batteries.
Preparation for storage
- Charge level: if you plan to store for a long time, charge the battery to 100% or to a voltage of 14.4 V. For a short break (up to several months), a full charge is not required - 50-80% is enough. Unlike cheap lead-acid analogues, LiFePO4 does not suffer from partial charge.
- Disconnection: be sure to disconnect the battery from the charger and all consumers.
Storage conditions
- Temperature: the optimal range is from 0 to +40 °C. For long-term storage (more than 3 months), it is best to maintain the temperature near room temperature (+20 °C).
- Short-term frost: For a short period of time (usually up to 30 days), LiFePO4 can be left even in frost, unless otherwise specified by the manufacturer.
- Location: Choose a shaded, dry, well-ventilated room. Protect the battery from mechanical shock, vibration and falls.
During prolonged downtime
If the battery is stored for months, periodically check the charge level and try to keep it above 50%. This will help preserve the resource and avoid deep discharge.
