In fact, this advice is what harms the battery and reduces its life. Whoever invented this idea does not distinguish between a laptop battery that is lithium-ion, and a car battery that is lead acid, and he also thinks that the laptop has an iron trans-charger inside with a calendar bridge and an ampere scale Just as the car battery was charged in the old days and not a sophisticated electronic charging circuit that charges the battery and protects it in an ideal way, scientifically to preserve the laptop battery and the mobile battery, leave it in charging as much as possible, and charge it whenever it decreases, even if a little, and whoever does not like this talk should review the instructions Charging lithium-ion batteries.