Laptop Battery Pack: 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

If the case is flat and the pack is not unusually hot, record the reported charge and runtime. Leave any swollen or damaged device off and unplugged.

Stop point: A swollen, leaking or unusually hot lithium battery must not be charged or compressed.

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 a confirmed worn or unsafe battery with the exact compatible pack and verify charge control.

Related cause to rule out

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

Checks after the work

After repair or replacement, check charging to full, controlled discharge, sleep and several charger transitions.

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