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Small round lithium CMOS battery for HP 3105m laptop motherboard

DBTLAP

DBTLAP 3105m CMOS battery Lithium

SKU CH-31GX-MJH2R

Lithium CMOS battery replaces the BIOS RTC cell on HP 3105m laptop motherboards

  • Battery TypeLithium
  • Compatible with HP 3105m laptops
  • Lithium chemistry provides stable voltage for BIOS settings
  • Single replacement CMOS battery included
  • Tested before shipping to ensure reliability
  • New component restores accurate system time

Direct replacement for HP 3105m

This CMOS battery is a direct replacement for the HP 3105m laptop motherboard. It restores BIOS and real-time clock settings when the original cell fails. The lithium chemistry provides stable voltage for firmware memory. It is intended for repair technicians and owners servicing this specific model.

Passive operation with no power draw

The battery operates passively and draws no power from the system while installed. It produces zero noise and generates no heat during normal use. No active cooling or thermal management is required. The cell is tested before shipping to verify reliable voltage output.

Frees main battery from BIOS duty

Installing this cell frees the main laptop battery from maintaining BIOS settings when the system is off. It fits the motherboard holder designed for the original CMOS unit. The package includes one battery ready for installation. Buyers needing a main laptop power pack or a different form-factor CMOS cell should look elsewhere.

Highlights

  • Compatible with HP 3105m laptops
  • Lithium chemistry provides stable voltage for BIOS settings
  • Single replacement CMOS battery included
  • Tested before shipping to ensure reliability
  • New component restores accurate system time

Specifications

Battery TypeLithium

Questions about this item

How is the CMOS battery installed on the HP 3105m motherboard, and what step is often missed?

Locate the coin-cell holder on the motherboard, remove the old cell noting the positive side orientation, press the new lithium cell in with the same polarity, then clear the CMOS jumper or enter BIOS to reset the date and time.

What maintenance or replacement will the DBTLAP lithium CMOS battery need later?

The cell is a primary lithium type and is not rechargeable; plan to swap it when the system clock drifts or BIOS settings stop persisting after power loss.

What limit appears first under sustained use of this CMOS battery?

Gradual voltage decay over years eventually drops below the threshold needed to keep the real-time clock and CMOS RAM powered while the laptop is off.

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