Ways to charge and operate the laptop battery when it is outside the laptop 

To find out the strength of the laptop battery, charge it outside, then insert it into the laptop, and note how much the charge is and how long the laptop lasts. From here, we can estimate the battery life, is it good, or do we replace it?
. This method can take advantage of the laptop battery, even if it is exhausted, in the ventilation devices while the home electricity is turned off, in the lighting, and charging mobile phones via a car charger from 12 to 5 volts, and many benefits from the latent energy. And I, in turn, have done several ways to operate and charge stubborn laptop batteries, regardless of the companies that did not support us with schemes, I hope that God will benefit everyone.