Chromebook Battery: swollen battery cells. Internal gas generation expands one or more lithium pouch cells.

The distinguishing clue

The case, keyboard or touchpad begins lifting and the pack may feel warm.

Checks before an assessment

If safe, note the battery-health information already available in ChromeOS and the charger model. Distinguish loss of charge during sleep from shutdown immediately after unplugging.

Stop point: A swollen Chromebook battery should remain switched off and unplugged.

Workshop confirmation and repair

Device-level check: Assess swelling without load testing, then identify the exact replacement pack and inspect the surrounding case for pressure damage.

Targeted check: Shut down, disconnect power and inspect without pressing the affected area. If confirmed: Remove and replace the swollen battery using safe handling and disposal.

Repair boundary: Replace the matched pack after confirming the USB-C or charging path is healthy.

Related cause to rule out

When runtime falls steadily and the laptop may shut down when demand increases, also consider Chromebook Battery: worn battery cells before choosing a repair.

Checks after the work

After repair or replacement, check charging, browser workload, sleep, restart and battery-only runtime.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.