Battery runtime depends on workload, display, radios, background apps, temperature, age and capacity. Compare a repeatable light-use test first.
Step-by-step checks
1. Check current workload
Use Task Manager or the system battery report to identify sustained CPU, GPU or background activity.
2. Reduce obvious demand
Lower brightness, disconnect unused accessories and pause demanding games, video encoding or synchronisation for a comparison.
3. Review battery usage
Use Windows battery settings to see which apps consumed power. Restrict only apps you recognise and do not need in the background.
4. Update and restart
Install trusted Windows, firmware and graphics updates, then repeat the same workload after restart.
5. Check health and swelling
Use manufacturer diagnostics for health or cycle information. Runtime decline can be normal with age, but swelling is a safety fault.
When to stop
Stop using and charging a swollen, leaking, damaged, unusually hot or sweet-smelling battery. Do not puncture or compress it; arrange qualified service.
What to tell an expert
Share the device model, operating system, exact symptom or error, when it began, what changed beforehand, and which checks you completed. Do not send passwords, one-time codes, encryption recovery keys, or unnecessary personal files.
Official reference
This Supportia guide was prepared with current official guidance as a factual baseline. Interface names can still vary by device and version. Open the official reference.
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