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The battery also has a built-in charge controller to prevent overcharging, and if the capacity is significantly lower, shouldn't the risk of that stored energy
by nitrogen 7y ago
The battery also has a built-in charge controller to prevent overcharging, and if the capacity is significantly lower, shouldn't the risk of that stored energy being released also be lower since there's less energy stored?
- RL_Quine 7y agoThe phone has an on board charger. The battery itself has its own controller which will disconnect the battery from the charger if it goes over voltage, under voltage, or over temperature. The "percentage charge" of a lithium cell isn't really any measure of its safety. Even at 0% charge the cells can still auto ignite, there's an incredible amount of energy in them when they're considered to be empty.
- sandos 7y agoThe problem is lithium doesn't like being at 100% state of charge for prolonged periods of time. Normally you charge it up, then use the battery. When on a charger the voltage will sit close to fully charged voltage, and that ages the battery quickly. Add some heat and you may have a problem eventually. In my experience, its usually "only" a problem when later, you discharge the battery and then try charging it back up, thats when stuff starts burning.