220-802 · Question #74
Ann, a user, has brought her laptop in for service. She reports that her battery is at 100%, but whenever it is unplugged it immediately shuts down. Which of the following should the technician do?
The correct answer is A. Replace the battery. A laptop that reports 100% charge but immediately powers off when unplugged is exhibiting a failed battery. The battery's internal cells have degraded to the point where they can no longer hold or deliver a charge, but the battery management controller still reports an…
Question
Ann, a user, has brought her laptop in for service. She reports that her battery is at 100%, but whenever it is unplugged it immediately shuts down. Which of the following should the technician do?
Options
- AReplace the battery
- BChange power settings to balanced
- CReplace the power adapter
- DEnable APM in the BIOS
How the community answered
(53 responses)- A94% (50)
- B2% (1)
- C4% (2)
Explanation
A laptop that reports 100% charge but immediately powers off when unplugged is exhibiting a failed battery. The battery's internal cells have degraded to the point where they can no longer hold or deliver a charge, but the battery management controller still reports an inaccurate state of charge. This is a hardware failure and can only be resolved by replacing the battery. Adjusting power settings (B) manages consumption but cannot fix a battery that delivers no power. The power adapter (C) is not the issue since the battery shows full charge while plugged in. APM (Advanced Power Management) in BIOS (D) is unrelated to battery cell failure.
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