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Small silver coin-cell battery with two wire leads and a white connector plug

DBTLAP

DBTLAP CMOS Battery for Dell Vostro 3550

SKU CH-R254-DRZT5

A replacement CMOS battery that restores BIOS settings and system clock on Dell Vostro 3550 laptops

  • Battery TypeLithium
  • Reliable system time with 3550-compatible CMOS battery
  • Lithium chemistry maintains BIOS settings when main power is off
  • Direct replacement for faulty or cracked original unit
  • Each battery tested before dispatch for dependable operation
  • Powers real-time clock on motherboard, not the main laptop battery

Compatible replacement for Dell Vostro 3550

This DBTLAP CMOS battery is a direct replacement for the Dell Vostro 3550 motherboard. It restores the real-time clock and BIOS settings when the original cell fails. The lithium coin cell is tested before shipping to ensure reliable operation. It is designed for motherboard firmware power, not for main laptop power.

Steady low-current retention

The cell delivers a constant microamp-level current to keep the system clock and CMOS memory alive while the laptop is off. It does not face burst loads or high-drain cycles. Performance is measured by its ability to hold voltage steadily over months of standby time. A fresh cell prevents date reset and BIOS checksum errors on every cold boot.

Minimal thermal and power footprint

As a passive lithium coin cell, it generates no measurable heat during normal operation. There are no moving parts, fans or active circuitry to create noise. Power draw is limited to the tiny leakage current required by the motherboard RTC circuit. The component sits inert on the board until the main battery is removed or depleted.

Highlights

  • Reliable system time with 3550-compatible CMOS battery
  • Lithium chemistry maintains BIOS settings when main power is off
  • Direct replacement for faulty or cracked original unit
  • Each battery tested before dispatch for dependable operation
  • Powers real-time clock on motherboard, not the main laptop battery

Specifications

Battery TypeLithium

Questions about this item

Does the CMOS battery generate any heat or noise while the Dell Vostro 3550 runs all day?

No, the lithium CMOS battery is a passive component that maintains BIOS settings and the real-time clock without producing heat or noise.

What must I already have to install this CMOS battery in my Dell Vostro 3550?

You need a small Phillips screwdriver to open the chassis and access the motherboard battery socket.

Will this replacement CMOS battery work with the original motherboard in my Dell Vostro 3550?

Yes, it is designed as a direct replacement for the factory CMOS battery on the Vostro 3550 motherboard.

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