How to store lithium batteries

1. Lithium primary battery
Also called primary lithium battery. It can be discharged continuously or intermittently. Once the power is exhausted, it cannot be used anymore. It is widely used in electronic products with low power consumption such as cameras. The self-discharge of lithium primary battery is very low and can be stored for 3 years. The effect will be better if it is stored under refrigeration. It is a good idea to store lithium primary battery in a low temperature place. Note: Lithium primary battery is different from lithium ion battery. Lithium primary battery cannot be charged and charging is very dangerous.
2. Lithium ion battery
Also called secondary lithium battery. It can be stored for more than half a year at 20℃. This is because its self-discharge rate is very low and most of the capacity can be restored.
The self-discharge phenomenon of lithium battery will cause the battery to be over-discharged and damage the internal structure of the battery, reducing the battery life if the battery voltage is below 3.6V for a long time. Therefore, lithium batteries stored for a long time should be recharged every 3~6 months, that is, charged to a voltage of 3.8~3.9V (the best storage voltage of lithium battery is about 3.85V), and maintained at a discharge depth of 40%-60%. It is not suitable to be fully charged. The battery should be stored in a dry environment at 4℃~35℃ or in moisture-proof packaging. Keep away from heat sources and do not place it in direct sunlight.
The application temperature range of lithium batteries is very wide. They can still be used outdoors in the winter in the north, but the capacity will be greatly reduced. If it returns to room temperature, the capacity can be restored.