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Small round lithium coin cell battery with two wire leads and white connector plug

DBTLAP

DBTLAP CMOS Battery for Sony Vaio PCG-41217L

SKU CH-9SYF-T66Q3

Lithium CMOS battery maintains BIOS settings for Sony Vaio PCG-41217L motherboards

  • Battery TypeLithium
  • Keeps system clock accurate with lithium CMOS cell
  • Direct replacement for Sony Vaio PCG-41217L motherboards
  • Tested before shipping to ensure reliable operation
  • Fixes BIOS reset faults caused by dead battery
  • Single battery included for quick motherboard repair

CMOS Battery for Sony Vaio 41217

This lithium CMOS battery replaces the BIOS RTC cell on Sony Vaio motherboards carrying the 41217 designation. It is intended for owners of that specific laptop model who need to restore system clock and firmware settings. The unit is a direct replacement for the original component, not a main laptop battery.

Installation notes and common issues

The battery installs by opening the laptop chassis, locating the coin-cell socket on the motherboard, and swapping the old cell for the new one. Difficulty varies by chassis design; some models require extensive disassembly. A frequent problem is forgetting to disconnect the main battery first, which can cause a short circuit.

Behaviour under sustained load

As a CMOS backup cell the battery supplies only microampere-level current to the real-time clock and CMOS memory. It does not experience sustained load in the way a main power battery does, and its voltage remains stable over years of continuous standby use. Capacity loss is gradual and only noticeable when the system clock begins to drift.

Highlights

  • Keeps system clock accurate with lithium CMOS cell
  • Direct replacement for Sony Vaio PCG-41217L motherboards
  • Tested before shipping to ensure reliable operation
  • Fixes BIOS reset faults caused by dead battery
  • Single battery included for quick motherboard repair

Specifications

Battery TypeLithium

Questions about this item

How can I verify the CMOS battery is working after installing it in my Sony Vaio PCG-41217L?

The system clock and BIOS settings should retain the correct time and configuration after the laptop is powered off and restarted.

What comes in the package and is anything else required for installation?

The box contains one CMOS battery. No additional components are needed for the replacement.

Which version of this CMOS battery matches the Sony Vaio PCG-41217L?

This DBTLAP lithium CMOS battery is built for the Sony Vaio PCG-41217L model.

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