Good thing that its fairly easy to evaluate and preserve its health. The obscure Battery Report tool in Windows can help you get hard numbers on your laptops endurance but youll never find it if you dont know where to look. So basically you are trying to check the capacity of a battery by measuring mah but since the voltage has been converted first you will never get an accurate reading.
Watts measures the amount of energy a device uses.
To produce the output the voltage is increased to 5v - this uses power ie. Caring for your laptop computers battery life is an indispensable part of maintaining the equipment itself. It just means the higher capacity battery will last longer than the original. 1 mAh 1000 Whr V where V denotes the Voltage of your Laptop Battery.
