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?