How to Know If Your Laptop Battery Needs Replacing
Your laptop battery needs replacing if it no longer lasts more than 1–2 hours from full charge, drops percentage suddenly, or the device only works when plugged in. Use our battery health checker to confirm.
Laptop batteries usually need replacing when charge drops quickly, shutdowns become unpredictable, or the battery physically swells. This guide helps you separate battery wear from charger, software or heat problems.
Start with the section that matches your problem, then use the linked guide, tool or service page for the next step.
How to Know If Your Laptop Battery Needs Replacing — FAQs
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