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Coin cell CMOS battery for Acer Aspire 5742G laptop motherboard

DBTLAP

DBTLAP CMOS Battery For Acer Aspire 5742G

SKU CH-BCGV-JW9TJ

Lithium CMOS battery replaces the BIOS RTC cell on Acer Aspire 5742G motherboards

  • Battery TypeLithium
  • Powers BIOS clock with lithium CMOS cell
  • Direct replacement for Acer Aspire 5742G motherboard
  • Pre-tested unit ensures reliable boot every time
  • Fixes date-loss errors from failed RTC battery
  • Single battery packaged for quick swap

CMOS Battery for Acer Aspire 5742G

This lithium CMOS battery is a direct replacement for the Acer Aspire 5742G laptop. It powers the real-time clock and retains BIOS settings when the main battery is removed. The part arrives new and tested, ready for installation on the motherboard.

Suitable for owners fixing a dead BIOS clock

This unit suits anyone whose Acer Aspire 5742G loses time, shows CMOS checksum errors or fails to keep hardware settings after shutdown. It is not a main laptop battery and will not power the system for portable use. Buyers needing a high-capacity power pack for mobile runtime should look elsewhere.

Lithium coin cell restores BIOS memory function

The lithium chemistry provides the stable low-current supply required by the motherboard RTC circuit. Replacing a depleted cell restores persistent BIOS configuration and accurate system time. Each battery is tested before shipping to confirm it holds the correct voltage for reliable operation.

Highlights

  • Powers BIOS clock with lithium CMOS cell
  • Direct replacement for Acer Aspire 5742G motherboard
  • Pre-tested unit ensures reliable boot every time
  • Fixes date-loss errors from failed RTC battery
  • Single battery packaged for quick swap

Specifications

Battery TypeLithium

Questions about this item

Does the 5742G CMOS battery generate any noise or heat while the laptop runs all day?

The coin cell is a passive lithium component with no moving parts, so it produces no audible noise and no measurable heat during continuous operation.

What must I already own for this battery to work in my machine?

You need an Acer Aspire 5742G motherboard with a standard two-pin CMOS header and a small Phillips screwdriver to open the chassis.

Will the replacement cell keep the clock and BIOS settings on an older 5742G that has been in storage?

Yes, the fresh lithium cell restores the RTC voltage so the real-time clock and CMOS configuration are retained exactly as on the original battery.

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