Chromebook Battery: battery cell imbalance. One cell group reaches its voltage limit before the others.

The distinguishing clue

The percentage jumps, charging stops early or shutdown occurs with charge still reported.

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: Check ChromeOS battery health, charger compatibility and behaviour through shutdown and sleep.

Targeted check: Compare pack data and voltage behaviour across a controlled charge and discharge. If confirmed: Replace the imbalanced pack after confirming the charger is stable.

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.