Keeping your Lenovo laptop’s battery in top shape is essential for maintaining portability and long-term performance. Whether you're experiencing sudden shutdowns or just want to check your battery's health, using the right can provide the insights you need. Official Lenovo Battery Diagnostic Tools
If your laptop won't boot into Windows, you can use a bootable USB version of the diagnostic tool. LENOVO V15 – How to Check Battery Health lenovo battery diagnostic tool download
It displays current charge, full charge capacity, original design capacity, cycle counts, and battery temperature. Keeping your Lenovo laptop’s battery in top shape
This is a more robust, standalone diagnostic suite for deeper hardware testing. full charge capacity