#1. Introduction : Laptop batteries and batteries in general are not designed to last forever. A battery can serve you for a long time if you manage it well. Checking your laptop's battery health should be something you do often if you really care about getting a lot of juice out of it. You don't need sophisticated instruments to know your laptop battery's health. It's very easy and you'll learn how to do it. Table of contents 1 . Introduction 2 . How to Generate Battery Report on Windows 7 3 . How to Generate Battery Report on Windows 8 & 10 4 . Battery Design Capacity and Full Charge Capacity 5 . Meaning of mAh and mWh 6 . Basic calculation to determine how long your battery will last 7 . Charge Cycles 8 . Things that decline battery life 9 . How to get genuine battery replacement 10 . Common myths about laptop battery As a side note, you have to know that a battery's health declines over time due to their chemical makeup. Just like