220-802 · Question #462
Which of the following is a common location of the CMOS battery in a laptop?
The correct answer is A. Under the keyboard. In most laptops, the CMOS battery is located under the keyboard, as the keyboard panel provides accessible internal space for low-profile coin cell batteries.
Question
Which of the following is a common location of the CMOS battery in a laptop?
Options
- AUnder the keyboard
- BBehind the removable hard drive
- CUnder the removable CD drive
- DBehind the laptop battery
How the community answered
(43 responses)- A93% (40)
- C2% (1)
- D5% (2)
Why each option
In most laptops, the CMOS battery is located under the keyboard, as the keyboard panel provides accessible internal space for low-profile coin cell batteries.
Laptop CMOS batteries are most commonly a CR2032 coin cell located under the keyboard because that area provides a relatively accessible internal compartment after keyboard removal. Placing it there balances accessibility for replacement with protection from accidental contact during routine upgrades like RAM or HDD swaps.
The hard drive bay is a compact, purpose-built slot for the drive module itself and does not typically have space or mounting provisions for a CMOS battery.
The optical drive bay is designed specifically to house the CD/DVD drive unit and does not provide a standard location for CMOS battery placement.
The main laptop battery bay is sealed and designed for the large rechargeable battery pack; CMOS batteries are not placed there as they require separate access and replacement intervals.
Concept tested: CMOS battery location in laptop hardware
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