Rechargeable lithium batteries also suffer from self-discharge. Even if they are not used, the electricity they contain will be consumed. Since it has not been charged for a while, the lithium battery may have been over-discharged. If it is a 3.7V battery, if the voltage is lower than 2.75V, it is over discharged and the battery has been over discharged. damaged.
The normal charging and discharging time cannot therefore be completed.
The biggest fear of lithium batteries is over-discharging and overcharging. Overcharging is now solved by an overload protection charger, which automatically shuts off when full.
Over discharge means that the lithium battery is used until the flashlight is completely turned off. Excessive discharge and overcharge will cause serious damage to the battery and will not be immediatelyscrapped, but the lifespan will be. be much shorter.
Generally, when the light in your hand dims to a low level, take it out and charge it. Guaranteed without discharge.
You are right about the cell phone lithium battery. Typically, when there is about 10% left, you will be asked to turn off, so that the flashlight battery has backup power
. You can enter the Enable Backup Power command.