: Compare this to the "Design Capacity." If the full charge capacity is below 70% , it is generally time to replace it.
A proper report for buying a laptop battery covers everything from diagnosing whether you actually need a new one to ensuring the replacement you buy is safe and compatible. 1. Pre-Purchase Diagnostics buy laptop battery
Before buying, confirm your battery’s actual health. Windows has a built-in tool that provides a detailed history and capacity report. : Compare this to the "Design Capacity