220-1101 · Question #36
A colleague has a laptop that has been working as expected for several years, but the laptop now has a small bulge in the bottom casing and overheats occasionally while plugged in to a wall outlet. Th
The correct answer is B. battery.. A bulging laptop casing is almost always caused by a swollen lithium-ion battery. Li-ion cells degrade over time and can produce internal gases, causing the battery to physically expand and push against the casing. A swollen battery also generates excess heat, explaining the over
Question
A colleague has a laptop that has been working as expected for several years, but the laptop now has a small bulge in the bottom casing and overheats occasionally while plugged in to a wall outlet. The MOST likely component that needs to be replaced is the:
Options
- Apower adapter.
- Bbattery.
- Csystem fan.
- Dhard drive.
How the community answered
(32 responses)- A6% (2)
- B81% (26)
- C9% (3)
- D3% (1)
Explanation
A bulging laptop casing is almost always caused by a swollen lithium-ion battery. Li-ion cells degrade over time and can produce internal gases, causing the battery to physically expand and push against the casing. A swollen battery also generates excess heat, explaining the overheating. This is a safety hazard and the battery must be replaced immediately. A failing power adapter (A) would cause charging issues, not physical bulging. A failing system fan (C) causes overheating but no bulging. A failing hard drive (D) causes data errors, not physical deformation.
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