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Coin-cell CMOS battery in plastic wrapper with two-wire connector

DBTLAP

DBTLAP CMOS Battery for MSI PR400

SKU CH-QABC-TVNNB

A lithium CMOS battery that keeps the MSI PR400 motherboard clock and BIOS settings alive

  • Battery TypeLithium
  • Keeps system clock accurate with lithium CMOS cell
  • Direct replacement for MSI PR400 motherboard RTC battery
  • Tested before shipping to ensure reliable operation
  • Eliminates BIOS reset errors caused by dead battery
  • Single battery included for straightforward installation

DBTLAP CMOS Battery for MSI PR400

This lithium CMOS battery replaces the BIOS RTC cell on an MSI PR400 laptop motherboard. It restores system time and firmware settings when the original coin cell fails. The part is supplied new and tested before shipment. It is not a main laptop battery and will not power the system itself.

Package contents and fit

The box contains one CMOS RTC battery ready for direct installation. No extra cables, brackets or software are included. The component is built to match the original form factor so it seats correctly in the motherboard holder. Buyers who need a multi-cell power pack or a main system battery should look elsewhere.

Capacity and service life

The lithium chemistry provides the steady low current a real-time clock circuit requires. It comfortably maintains date, time and BIOS configuration for the typical service interval of a laptop motherboard. The cell runs out when its voltage drops below the threshold needed by the RTC oscillator, at which point settings are lost again.

Highlights

  • Keeps system clock accurate with lithium CMOS cell
  • Direct replacement for MSI PR400 motherboard RTC battery
  • Tested before shipping to ensure reliable operation
  • Eliminates BIOS reset errors caused by dead battery
  • Single battery included for straightforward installation

Specifications

Battery TypeLithium

Questions about this item

What maintenance will this CMOS battery need later?

It is a primary lithium cell, so no recharging is possible; when the system clock starts drifting or BIOS settings reset, the battery must be replaced.

What limit appears first during sustained use?

The cell’s internal chemistry gradually depletes, so the first limit is the finite charge capacity that powers the real-time clock and CMOS memory.

How much heat or noise does it produce when running all day?

It generates no audible noise and negligible heat because the current draw is in the microampere range.

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