I always keep my charger plugged-in and my battery remains fully charged.
but sometimes when I restart my laptop it starts charging again and shows the battery is in it's 90's%. My question is should I leave the charger plugged-in so that it reaches 100% again or I plug-out the charger and use the battery to some level and then plug-in the charger?
In simple words,
At which level should I recharge my laptop battery? Is it ok to plug-in the charger at 90% charge remaining?
Answer
It is okay to plug the laptop into power at any stage, the circuitry is designed not to overheat the battery. However, it is not good for your battery lifespan at all; it is always best to let the battery drop to around 20% and recharge it to 80-90%.
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