Ultrabook Internal Battery: heat-sensitive battery failure. Internal resistance or sensor error becomes worse as the pack warms.

The distinguishing clue

Charging or battery operation works from cold and stops after several minutes.

Checks before an assessment

Look for a raised touchpad, separating case seam or changed keyboard fit without pressing on it. Any swelling is a reason to stop charging.

Stop point: Do not press a raised touchpad or bend a swollen pouch cell.

Workshop confirmation and repair

Device-level check: Leave an unusually hot pack out of load tests and inspect the battery, its connection and surrounding thermal damage before any further charging.

Targeted check: Monitor temperature and voltage during a limited, safe load. If confirmed: Replace the heat-sensitive battery and inspect nearby cooling.

Repair boundary: Replace the exact thin battery and inspect the palm-rest structure for pressure damage.

Related cause to rule out

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

Checks after the work

After repair or replacement, check case fit, touchpad, full charge, discharge, sleep and temperature.

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