1 to 3 months.
The best way to extend the life of lithium batteries is to charge and discharge them shallowly, that is, try to keep them fully charged . If the lithium battery is discharged and cannot be charged in time, the impact on the life of the lithium battery will be large, which means that it will accelerate the aging of the lithium battery and speed up the process attenuation of lithium battery life. . Therefore, this method cannot be taken.
According to this deduction, if the lithium battery has two years left, it will be completely broken after being stored in a completely exhausted state for no more than one year. It is therefore not recommended to store lithium batteries in this way.
Precautions for lithium batteries
It is necessary to pay attention to the appropriate temperature. ThereCharging temperature of lithium batteries is 0℃~45℃ and discharge temperature of lithium batteries is 0℃~45℃. -20℃~60℃.
Should be used in a clean, dry and ventilated environment, avoid contact with corrosive substances and stay away from fire and heat sources. Lithium batteries have no memory effects and can be used and charged at any time. time, but be careful. Lithium batteries should not be over-discharged. Excessive discharge will cause a very large loss of capacity. Do not mix the battery with metal objects to avoid metal objects touching the positive and negative electrodes of the battery. , causing a short circuit, damaging the battery or even causing danger.
Note 1. Storage of lithium-ion batteries
Lithium-ion batteries can be stored in a clean and environmentally friendly environmentwith an ambient temperature of -5°C to 35°C and a relative humidity not exceeding 75%. In a dry, ventilated room, avoid contact with corrosive substances and keep away from fire and heat sources. The battery power remains between 30 and 50% of the nominal capacity. It is recommended to recharge stored batteries every 6 months.
Note 2. Charging lithium-ion batteries
To charge lithium-ion batteries, a dedicated lithium-ion battery charger must be used.
Lithium ion battery charging adopts CC/CV (constant current + constant voltage) method, which means it is first charged with constant current and then switches to charging at constant voltage when the voltage reaches 4.2. V*n. Charging stops when the current decreases to 0.01C.
Note 3: Storing lithium-ion batteries once they are fully charged can reduce capacity lossé.
This idea is completely false. Lithium-ion batteries are different from nickel-chromium and nickel- batteries. metal hydride batteries, because they have a very poor "aging" characteristic, that is, after being stored for a while, even if they are not recycled, part of their capacity will definitely be lost. The reason is that the positive. and the negative electrode materials of the battery have been degraded since the beginning of its depletion process. The rate of “aging” is also different at different temperatures and power states.
Requirements for Shenzhen Devos lithium battery: storage temperature and power state are as follows
Storage after 40% saturation, storage after 100% saturation saturation
0°C remaining 98% (one year later) 94% gone (one year later)
25oC remained 96% (one year later)d) 80% left (one year later)
40 oC stayed 85% (one year later) ) 65% remaining (one year later)
60 °C leaves 75% (one year later) and 60% remains (3 months later)