Ultrabook Internal Battery: worn battery cells. Age and charge cycles reduce usable capacity and voltage stability.

The distinguishing clue

Runtime falls steadily and the laptop may shut down when demand increases.

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: Inspect for swelling, read capacity data and compare light and moderate load away from an unsafe pack.

Targeted check: Compare full-charge capacity, cycle count and behaviour during a controlled discharge. If confirmed: Replace the confirmed worn pack and verify normal charging.

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

Related cause to rule out

When charging is blocked or interrupted despite normal room conditions, also consider Ultrabook Internal Battery: battery temperature-sensor fault 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.