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Small silver coin-cell CMOS battery with two-wire connector

DBTLAP

DBTLAP CMOS Battery for Dell Inspiron 17R SE 7720

SKU CH-ZNYD-2ZWH1

A lithium CMOS battery that keeps BIOS settings and system time on Dell Inspiron 17R SE 7720 motherboards

  • Battery TypeLithium
  • Compatible with Dell Inspiron 17R SE 7720 models
  • Lithium chemistry provides stable CMOS power
  • Direct replacement for faulty BIOS batteries
  • Each unit tested before shipment
  • Single battery included for easy install

Purpose and fit

This CMOS battery is a direct replacement for the Dell Inspiron 17R SE 7720 motherboard. It supplies the low voltage needed to keep BIOS settings and the real-time clock running when the main power is off. Buyers with a different laptop model or a desktop board should look elsewhere.

Build integration

The cell slots into the existing battery holder on the motherboard and uses the original two-pin connector. No soldering, adapters or extra cables are required. It frees the system from CMOS checksum errors and date resets caused by a depleted original cell.

Capacity and limits

The lithium chemistry provides the standard voltage and shelf life expected for this socket. It comfortably maintains firmware configuration and timekeeping for the typical service interval. It will not power the main laptop load or replace a failed primary battery pack.

Highlights

  • Compatible with Dell Inspiron 17R SE 7720 models
  • Lithium chemistry provides stable CMOS power
  • Direct replacement for faulty BIOS batteries
  • Each unit tested before shipment
  • Single battery included for easy install

Specifications

Battery TypeLithium

Questions about this item

How long does the lithium CMOS battery last before the system clock drifts?

The lithium cell maintains BIOS settings for years under normal use; replace it when the clock starts losing time.

Does the battery generate any heat or noise during continuous operation?

No, a CMOS battery is a passive component that produces no heat and no audible noise.

What tools or cables are required to install this CMOS battery in a Dell Inspiron 17R SE 7720?

Only a small Phillips screwdriver to open the chassis; the battery plugs directly onto the motherboard header.

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