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Small silver coin cell battery for Dell Latitude 6420

DBTLAP

DBTLAP CMOS RTC Battery for Dell Latitude 6420

SKU CH-FV5T-D73JJ

Lithium CMOS RTC battery maintains BIOS clock and settings for Dell Latitude 6420 laptops

  • Battery TypeLithium
  • New CMOS battery restores BIOS clock on Dell Latitude 6420
  • Lithium cell tested before shipping for reliable start-up
  • Direct replacement fits motherboard slot without modification
  • Single unit included, ready for immediate installation
  • Fixes date reset and boot errors caused by dead cell

Compatible Dell Latitude E6420 CMOS Battery

This lithium CMOS RTC battery is designed specifically for the Dell Latitude E6420 laptop motherboard. It replaces the original coin-cell that maintains BIOS settings and the real-time clock when the main power is removed. The part is supplied new and tested before shipping.

Motherboard-level replacement part

The battery installs directly onto the system board, requiring disassembly of the laptop chassis to access the CMOS socket. No additional cables, chargers or mounting hardware are needed beyond what the original design provides. It restores persistent BIOS configuration and accurate timekeeping without occupying a drive bay or expansion slot.

Steady low-current operation over years

Lithium chemistry delivers a stable voltage for the continuous micro-amp draw of the RTC circuit, avoiding the voltage sag that causes CMOS checksum errors. The cell is built for multi-year service under constant load rather than short high-current bursts. It eliminates the need for frequent BIOS resets caused by a depleted original battery.

Highlights

  • New CMOS battery restores BIOS clock on Dell Latitude 6420
  • Lithium cell tested before shipping for reliable start-up
  • Direct replacement fits motherboard slot without modification
  • Single unit included, ready for immediate installation
  • Fixes date reset and boot errors caused by dead cell

Specifications

Battery TypeLithium

Questions about this item

How long will the lithium cell keep the real-time clock running before it needs replacement?

The lithium chemistry is designed to maintain BIOS settings and system time for several years of continuous operation.

Does the battery generate noticeable heat or noise during normal use?

No, the CMOS cell operates passively with no moving parts, producing no audible noise or measurable heat.

Is a specific connector or cable already required on the Dell Latitude E6420 motherboard for this replacement?

The battery uses the standard two-pin header found on the Latitude E6420 board, so no extra cable or adapter is needed.

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