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Small round silver coin cell battery in clear plastic bag

DBTLAP

DBTLAP CMOS Battery for Sony Vaio VGN-SZ

SKU CH-2QH4-91ERX

Lithium CMOS battery keeps Sony Vaio VGN-SZ system clock and BIOS settings accurate

  • Battery typeLithium
  • Direct Sony VGN-SZ motherboard fit
  • Lithium chemistry keeps clock running
  • Tested unit prevents dead BIOS
  • Single replacement restores time settings
  • New stock installs without soldering

DBTLAP CMOS Battery for Sony Vaio VGN-SZ

This lithium CMOS battery replaces the original BIOS RTC cell on Sony Vaio VGN-SZ laptop motherboards. It is a dedicated motherboard component, not a main laptop battery. The part arrives new and tested before shipping.

Steady voltage for real-time clock and BIOS settings

The lithium chemistry delivers a stable low current over years so the system clock and firmware configuration survive power-off periods. It is designed for continuous trickle discharge rather than high-drain bursts. A fresh cell restores reliable cold-boot behaviour when the original fails.

Direct plug-in replacement on the motherboard

Installation requires opening the laptop chassis, locating the coin-cell holder on the mainboard and swapping the old cell for this unit. Polarity must match the socket markings; reversing it will prevent the clock from holding time. No soldering or driver software is involved.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $10.99
Typical for this category: the median of 10,440 items is $10.99.

Specifications

Power
Battery typeLithium

Questions about this item

How much power does the lithium CMOS battery draw while the Sony Vaio VGN-SZ runs all day?

The lithium CMOS battery only supplies a tiny standby current to keep the real-time clock and BIOS settings alive; it does not draw measurable power from the mains while the laptop is running.

What must I already have to install this CMOS battery in my Sony Vaio VGN-SZ?

You need a small Phillips screwdriver to open the chassis and access the motherboard header where the original CMOS battery connects.

Will this replacement CMOS battery work with the original motherboard firmware on an older Sony Vaio VGN-SZ?

Yes, it is a direct 3 V lithium cell built to the same form factor and connector, so the existing BIOS recognises it immediately without any firmware update.

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