In the “Introduction to DJI Intelligent Flight Battery Auto-Discharging Rules,” we learned that battery self-discharge appears when the battery is left idle for storage. When a battery automatically discharges to a sufficiently low battery level (in general: 10%), recharging is required to restore the battery to maintain its energy storage capability. When the battery continues discharging at a battery level lower than 10%, it is over-discharging, which may cause damage to the electrodes and active materials, and thereby these materials may fail to respond appropriately. Long-term over-discharge can cause permanent damage to the battery cell. In severe cases, the battery may be damaged to the extent that it cannot be used.
How to Avoid “Over-Discharge”
When a battery is powered off and stored, it will deplete at a low speed, as is typical for lithium batteries. It may over-discharge when its battery is extremely low and remains idle in storage. To ensure that the active materials within your battery are in good condition and to extend battery life, it is recommended you discharge the battery to 40% - 65% in case it will not be used for 10 days or longer, and store it in a dry and cool place (22°C-28 °C). Charge and discharge the battery completely at least every three months. After it is fully charged, mount it to the aircraft and consume the battery level to 65% for storage.
How to Service a Battery
1. If a battery is not used for 10 days or longer, discharge it to a 40%-65% state of charge (until LED 3 lights up or blinks) for storage.
2. Charge and discharge the battery about every three months to maintain the battery's active materials' good conditions and extend the battery's lifetime. If the battery is stored after completely drained, it may over-discharge and be damaged.
3. Always store an Intelligent Flight Battery in a well-ventilated place.
4. The battery will enter hibernation mode if depleted and stored for an extended period. Recharge the battery to bring it out of hibernation.