We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small rectangular lithium CMOS battery with two-wire connector

DBTLAP

DBTLAP CMOS Battery for Dell XPS 15 9550

SKU CH-1P8X-0WK5B

Lithium CMOS battery maintains BIOS settings and system clock for Dell XPS 15 9550 motherboards

  • Battery TypeLithium
  • Keeps BIOS settings accurate with lithium CMOS cell
  • Direct fit for Dell XPS 15 9550 motherboard
  • Replaces faulty RTC battery to restore clock function
  • Tested before shipping for reliable first-boot performance
  • Single battery included for quick motherboard repair

Compatible CMOS Battery for Dell XPS 15 9550

This DBTLAP lithium CMOS battery replaces the RTC BIOS cell on Dell XPS 15 9550 laptop motherboards. It maintains system time and firmware settings when the main power is disconnected. The part is supplied new and tested before shipping. It is intended for motherboard-level repair, not for the primary laptop battery.

Practical Limits of a Coin-Cell RTC Battery

A lithium coin cell typically holds a charge for several years but will eventually deplete, causing the system clock to drift and BIOS settings to reset on each boot. The battery is not rechargeable and cannot be revived once voltage drops below the threshold. It only powers the real-time clock and CMOS memory, not the main system.

Installation Notes and Common Issues

Replacement requires opening the laptop chassis to access the motherboard, which may involve removing the bottom cover, battery pack, or other components depending on the service manual. Polarity must be observed when inserting the new cell. The part is not compatible with other Dell models or non-Dell laptops. Users uncomfortable with internal disassembly should seek professional service.

Highlights

  • Keeps BIOS settings accurate with lithium CMOS cell
  • Direct fit for Dell XPS 15 9550 motherboard
  • Replaces faulty RTC battery to restore clock function
  • Tested before shipping for reliable first-boot performance
  • Single battery included for quick motherboard repair

Specifications

Battery TypeLithium

Questions about this item

Which CMOS battery fits the Dell XPS 15 9550?

This DBTLAP lithium CMOS battery is listed as compatible with the Dell XPS 15 9550 and replaces the motherboard RTC BIOS cell.

What does the lithium battery do once installed in the laptop?

It keeps the real-time clock and BIOS settings alive when the main power is off, so the system retains the correct time and firmware configuration.

How does the battery connect to the motherboard?

It plugs into the standard CMOS header on the Dell XPS 15 9550 motherboard using the attached cable and connector.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.