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Small round lithium CMOS battery with attached cable and connector

DBTLAP

DBTLAP CMOS Battery for Sony VAIO VGN-AR730E

SKU CH-YJ1J-G7MCT

Lithium CMOS RTC battery replaces the motherboard clock cell on Sony VAIO VGN-AR730E laptops

  • Battery TypeLithium
  • Keeps BIOS settings accurate with lithium CMOS cell
  • Direct replacement for Sony VAIO VGN-AR730E motherboard
  • Restores system clock after faulty battery failure
  • Pre-tested unit ensures reliable first-boot operation
  • Single battery packaged for immediate installation

Compatible CMOS Battery for Sony VAIO VGN-AR730E

This replacement CMOS battery is designed specifically for the Sony VAIO VGN-AR730E laptop motherboard. It provides the necessary power to maintain BIOS settings and the real-time clock when the main battery is removed or depleted. The lithium cell arrives new and tested, ready for direct installation. It is intended for users repairing a faulty RTC battery, not for powering the laptop itself.

Lithium Cell Voltage and Form Factor Constraints

The battery uses a standard lithium chemistry suited for low-drain CMOS circuits on this specific motherboard design. Its physical dimensions and connector layout match the original VGN-AR730E specification exactly. No universal sizing applies; the part will not fit other laptop models or desktop boards. The voltage output is fixed by the lithium cell and cannot be adjusted for different requirements.

Straightforward Motherboard Installation Process

Installation requires opening the laptop chassis to access the motherboard socket, then unplugging the old cell and connecting the new one. Polarity is keyed by the connector to prevent reverse insertion. The most common issue is damaging the fragile wire leads or connector during removal if excessive force is used. Static precautions should be observed while handling the exposed motherboard.

Highlights

  • Keeps BIOS settings accurate with lithium CMOS cell
  • Direct replacement for Sony VAIO VGN-AR730E motherboard
  • Restores system clock after faulty battery failure
  • Pre-tested unit ensures reliable first-boot operation
  • Single battery packaged for immediate installation

Specifications

Battery TypeLithium

Questions about this item

Is this the right CMOS battery for my Sony VAIO VGN-AR730E?

Yes, this DBTLAP lithium cell is listed as a direct replacement for the VGN-AR730E motherboard RTC battery.

What does the lithium chemistry mean once it is installed on the motherboard?

Lithium chemistry provides a stable 3 V supply that keeps the real-time clock and BIOS settings alive for years without recharging.

How does the two-wire connector interface limit what this battery can do?

The two-wire connector only carries power to the RTC circuit; it cannot charge the cell or communicate with the system.

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