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Small silver coin-cell CMOS battery on light background

DBTLAP

DBTLAP CMOS Battery for Toshiba Satellite P840

SKU CH-QHRE-J16FH

Lithium CMOS battery maintains BIOS settings and system clock on Toshiba Satellite P840 motherboards

  • Battery TypeLithium
  • Keeps system clock accurate with lithium CMOS cell
  • Direct replacement for Toshiba Satellite P840 motherboard
  • Pre-tested unit arrives ready to install
  • Restores BIOS settings after battery failure
  • Single battery packaged for immediate swap

Compatible CMOS Battery for Satellite P840

This DBTLAP lithium coin cell replaces the motherboard RTC battery in a Toshiba Satellite P840 laptop. It keeps the system clock and BIOS settings alive when the main power is disconnected. The part is intended for repair technicians or owners servicing that specific model.

Lithium Coin-Cell Constraints

The battery uses standard lithium chemistry with a fixed voltage and capacity defined by its form factor. It cannot be recharged and will gradually lose capacity over several years of continuous use. No higher-capacity alternative exists in the same physical size.

Tested Unit with Direct Fit

Each cell is tested before shipping to confirm voltage and continuity. The package includes a single battery ready for direct installation on the motherboard. Correct polarity alignment is essential during replacement to avoid damage.

Highlights

  • Keeps system clock accurate with lithium CMOS cell
  • Direct replacement for Toshiba Satellite P840 motherboard
  • Pre-tested unit arrives ready to install
  • Restores BIOS settings after battery failure
  • Single battery packaged for immediate swap

Specifications

Battery TypeLithium

Questions about this item

Which DBTLAP CMOS battery version should I choose for my Toshiba Satellite P840?

The listing offers a single lithium CMOS battery built for the Satellite P840, so there are no alternate versions or capacities to select.

What does the lithium chemistry mean once the battery is installed on the motherboard?

Lithium chemistry provides a stable three-volt supply that keeps the real-time clock and BIOS settings alive while the laptop is unplugged.

What interface does this CMOS battery use and what does that limit in practice?

It connects through the standard two-pin motherboard header, limiting use to boards that accept that exact connector layout.

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