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Small round lithium CMOS battery for Acer TravelMate 4002WLMi

DBTLAP

DBTLAP CMOS Battery for Acer TravelMate 4002WLMi

SKU CH-TMYS-434M0

Lithium CMOS battery restores BIOS settings for Acer TravelMate 4002WLMi motherboards

  • Battery TypeLithium
  • Direct replacement for Acer TravelMate 4002WLMi
  • Lithium chemistry provides reliable CMOS power
  • Pre-tested unit ensures immediate motherboard function
  • Fixes BIOS reset and clock errors
  • Single battery includes everything needed for install

Compatible CMOS Battery for TravelMate 4002

This lithium CMOS battery is built for the Acer TravelMate 4002WLMi motherboard. It supplies the low current needed to keep BIOS settings and the real-time clock alive while the main power is off. The part is new and tested before it leaves the supplier.

Lithium coin cell restores BIOS retention

The single specification that decides fit is the lithium coin-cell chemistry matching the original motherboard socket. If the existing cell has leaked, lost voltage or physically cracked, this replacement restores CMOS memory and prevents boot-time configuration loss.

Single battery enables drop-in repair

The package contains one CMOS battery only — no cables, brackets or software. Swapping the cell on the board returns the laptop to normal POST behaviour without additional components or configuration steps.

Highlights

  • Direct replacement for Acer TravelMate 4002WLMi
  • Lithium chemistry provides reliable CMOS power
  • Pre-tested unit ensures immediate motherboard function
  • Fixes BIOS reset and clock errors
  • Single battery includes everything needed for install

Specifications

Battery TypeLithium

Questions about this item

What does the CMOS battery actually do inside the Acer TravelMate 4002WLMi?

It powers the real-time clock and keeps BIOS settings such as boot order and system time when the main battery is removed or the laptop is unplugged.

What type of battery chemistry is used for this replacement?

The cell is a lithium coin-type battery designed for low-drain CMOS circuits on the motherboard.

What physical form does the battery take for installation?

It arrives as a single coin cell with attached leads and connector, ready to plug into the motherboard header on the TravelMate 4002WLMi.

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