1. Overcharge, danger
Excessive charging can cause huge damage to lithium batteries, so charging is best done in accordance with standard time and standard methods, especially without charging for more than 12 hours. Any form of overcharging of a lithium battery can cause serious damage to the battery's performance, even if the battery explodes and catches fire.
In fact, maintaining lithium battery power at 10 % to 90 % is conducive to protecting the battery. In other words, batteries for digital products such as mobile phones and laptops do not need to be recharged to a maximum.
2. Excessive discharge, scrap
Don't run out of batteries, whether it's a laptop or a mobile phone. Excessive discharge can cause the decomposition and destruction of lithium-ion active substances and may not be reducible and scrapped.
In addition, when the lithium battery is idle, it will automatically discharge, so it must be charged after 3 to 6 months of idling. Life has been such a thing: new mobile phone bought more than half a year, lost; As a result, the old phone had to be found in the drawer. The result was that the power was not available and it could no longer be charged. This indicated that the battery had been damaged.
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