How to store lithium-ion batteries

The self-discharge of lithium primary batteries is very low and can be stored for 3 years. The effect will be better if stored under refrigerated conditions. It is a good way to store lithium primary batteries in a cold place.

Lithium-ion batteries can be stored for more than half a year at 20°C because of their low self-discharge rate and most of the capacity can be recovered.

The self-discharge phenomenon of lithium batteries, if the battery voltage is kept below 3.6V for a long time, it will cause the battery to over-discharge and destroy the internal structure of the battery and reduce the battery life. Therefore, long-term storage of lithium batteries should be recharged every 3 to 6 months, that is, charged to a voltage of 3.8 to 3.9V (the best storage voltage of lithium batteries is about 3.85V), and it is not suitable to be fully charged.

Lithium batteries have a wide application temperature range. They can still be used outdoors in winter in the north, but the capacity will decrease a lot. If they return to room temperature, the capacity can be restored.

Precautions

Lithium primary battery: Unlike lithium ion batteries, it cannot be charged and it is very dangerous to charge. Other precautions are equivalent to lithium-ion batteries.