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Small silver coin cell battery with attached wires and connector

DBTLAP

DBTLAP CMOS Battery For Dell Latitude 5520

SKU CH-F4AT-PY1JV

A lithium CMOS battery that keeps system time and BIOS settings on Dell Latitude 5520 motherboards

  • Battery TypeLithium
  • Compatible with Dell Latitude 5520 laptops
  • Lithium cell maintains BIOS clock and settings
  • Ready-to-install replacement for faulty CMOS units
  • Each battery tested before it leaves the factory
  • One battery included in the package

CMOS BIOS RTC Battery for Dell Latitude 5520

This replacement CMOS battery restores the real-time clock and BIOS settings on Dell Latitude 5520 laptops. It is designed for motherboard installation, not as a main laptop power source. The part suits repair technicians and owners fixing date reset or boot errors.

Lithium cell tested before shipping

The lithium chemistry provides stable voltage for CMOS memory retention during normal operation. Each unit is tested before dispatch to confirm it holds charge and fits the motherboard socket. Power draw is negligible and produces no heat or noise.

Single battery included in package

The box contains one CMOS battery only, with no cables, tools or software. Installing it replaces a faulty or depleted cell and restores persistent BIOS configuration immediately. No additional accessories are required for the swap.

Highlights

  • Compatible with Dell Latitude 5520 laptops
  • Lithium cell maintains BIOS clock and settings
  • Ready-to-install replacement for faulty CMOS units
  • Each battery tested before it leaves the factory
  • One battery included in the package

Specifications

Battery TypeLithium

Questions about this item

How do I install the CMOS battery in my Dell Latitude 5520 without damaging the connector?

Disconnect the main battery first, then unplug the old CMOS cell from the motherboard header and press the new lithium unit firmly into the same socket, ensuring the polarity matches the original orientation.

When will the replacement CMOS battery need changing again in a Dell Latitude 5520?

A lithium CMOS cell typically maintains BIOS settings for several years; replace it once the system clock drifts or CMOS checksum errors appear at boot.

What is the first sign that the CMOS battery is failing under continuous use in a Dell Latitude 5520?

The real-time clock loses time when the laptop is unplugged and BIOS settings revert to defaults after each cold start.

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