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Small silver coin-cell battery with two wire leads

DBTLAP

DBTLAP CMOS RTC Battery for HP 3105m Lithium

SKU CH-P8QZ-W8X05

Keeps BIOS settings and real-time clock running on HP 3105m laptops with a tested lithium cell

  • Battery TypeLithium
  • Replaces faulty CMOS battery to restore BIOS settings
  • Lithium chemistry provides reliable real-time clock power
  • Tested before shipping to ensure proper function
  • Designed for HP 3105m motherboard compatibility
  • New replacement part for cracked or broken units

Compatible HP 3105m CMOS Battery

This lithium CMOS RTC battery replaces the original cell on HP 3105m laptop motherboards. It maintains BIOS settings and the real-time clock when the main power is removed. The unit is new and tested before shipping. It is not a main laptop battery and will not power the system during use.

Simple two-wire installation

The battery connects to the motherboard header with a standard plug, so no soldering is required. Accessing the header usually involves removing the bottom case or keyboard bezel, which varies by chassis design. The only common issue is routing the short cable without pinching it against the frame. No driver or BIOS configuration is needed after fitting.

Steady voltage under continuous load

The cell delivers a stable three-volt output for the real-time clock circuit over its full service life. Because the current draw is in the microampere range, the voltage does not sag during extended periods of mains disconnection. Capacity loss is gradual and predictable, avoiding sudden BIOS resets. The lithium chemistry supports the 2022 manufacturing date with a long shelf life.

Highlights

  • Replaces faulty CMOS battery to restore BIOS settings
  • Lithium chemistry provides reliable real-time clock power
  • Tested before shipping to ensure proper function
  • Designed for HP 3105m motherboard compatibility
  • New replacement part for cracked or broken units

Specifications

Battery TypeLithium

Questions about this item

How can I verify the CMOS battery is working after installing it in my HP 3105m?

The system clock should keep the correct date and time after the laptop is powered off, and BIOS settings should remain saved without resetting to defaults on each boot.

What comes in the package and is any extra hardware required?

The box contains one CMOS RTC battery; no additional cables, brackets or tools are included or needed for the replacement.

Which battery version should I choose for the HP 3105m?

This lithium CMOS RTC battery is the single version listed for the HP 3105m, so select this item for a direct replacement.

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