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Small rectangular lithium CMOS battery with attached cable and connector

DBTLAP

DBTLAP CMOS Battery for Dell XPS 14 L421X

SKU CH-QH71-7RR6G

A lithium CMOS battery replaces the BIOS clock cell in Dell XPS 14 L421X ultrabooks

  • Battery TypeLithium
  • Compatible with Dell XPS 14 L421X Ultrabook
  • Lithium chemistry provides stable CMOS power
  • Replaces faulty or cracked BIOS battery
  • Single unit tested before shipping
  • Designed for motherboard RTC function

Compatible Dell XPS 14 L421X CMOS Battery

This DBTLAP lithium CMOS battery replaces the BIOS RTC cell on Dell XPS 14 L421X ultrabook motherboards. It maintains system time and firmware settings when the main power is removed. The unit is tested before shipping and arrives as a new replacement part.

Suitable for owners with a dead or leaking CMOS cell

Buyers who need a main laptop battery or a charger should look elsewhere, as this component only serves the motherboard real-time clock. It does not power the system during use and cannot replace a depleted primary battery pack.

Single battery included in the package

The box contains one tested CMOS cell ready for installation on the target motherboard. No additional cables, tools or software are supplied, so the change is limited to the physical battery swap.

Highlights

  • Compatible with Dell XPS 14 L421X Ultrabook
  • Lithium chemistry provides stable CMOS power
  • Replaces faulty or cracked BIOS battery
  • Single unit tested before shipping
  • Designed for motherboard RTC function

Specifications

Battery TypeLithium

Questions about this item

Do I need a soldering iron or is the 14 L421X CMOS battery plug-in?

The DBTLAP CMOS battery comes with a plug-in connector so no soldering is required for the Dell XPS 14 L421X motherboard.

Will this lithium CMOS battery keep BIOS settings on a legacy Dell XPS 14 L421X running older peripherals?

Yes, the lithium cell maintains RTC and CMOS settings on the L421X motherboard regardless of the age of attached drives or ports.

How can I verify the new CMOS battery is working after installing it in my XPS 14 L421X?

Power on, enter BIOS, set the correct date and time, save, reboot and confirm the settings persist without a CMOS checksum error.

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