How Long To Charge Laptop Battery First Time Dell. This post explains why you should plug your modem and router into a battery backup device. You just need to make sure your son lets the battery charge all the way up to 100 before unplugging the charger and letting the laptop run on battery power for the first time.
Plug your laptop into a power source and allow the battery to charge to 100. The charge time varies between Dell laptops. However charging your battery to high voltages except for the first time can significantly decrease your batterys lifespan.
Laptops with larger screens tend to have a shorter battery run time.
Laptops with larger screens tend to have a shorter battery run time. This was the default. 3 Disconnect the power from the wall when not using the laptop. Actual battery running time depends upon the power demands made by the equipment.
