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Small coin cell battery with wire connector, new condition

DBTLAP

DBTLAP CMOS Battery for Sony Vaio VGN-FS215M

SKU CH-5CM8-7X7QK

Lithium CMOS battery replaces the RTC backup cell on Sony Vaio VGN-FS215M motherboards

  • Battery TypeLithium
  • New CMOS battery restores BIOS settings and system clock
  • Lithium chemistry provides stable 3 V output for RTC circuitry
  • Direct replacement for Sony Vaio VGN-FS215M motherboard
  • Each unit tested before dispatch to confirm voltage and continuity
  • Single battery in package fits the designated CMOS socket

Compatible Sony Vaio VGN-FS215M CMOS Battery

This DBTLAP lithium CMOS battery replaces the RTC backup cell on Sony Vaio VGN-FS215M laptop motherboards. It maintains BIOS settings and system time when the main power is disconnected. The unit is supplied new and tested before shipping. It is intended for motherboard-level replacement, not for the main laptop battery.

Low Power Thermal Behaviour

As a CMOS backup cell the battery draws negligible current during normal operation. It produces no audible noise and generates no measurable heat inside the chassis. The lithium chemistry provides a stable voltage supply to the real-time clock circuit without active cooling requirements.

Sustained Load Characteristics

Under continuous time-keeping duty the cell delivers steady voltage for the expected service life of a lithium coin cell. No performance degradation occurs during extended periods of mains power absence. The battery is designed for long-term retention of BIOS configuration data rather than high-current bursts.

Highlights

  • New CMOS battery restores BIOS settings and system clock
  • Lithium chemistry provides stable 3 V output for RTC circuitry
  • Direct replacement for Sony Vaio VGN-FS215M motherboard
  • Each unit tested before dispatch to confirm voltage and continuity
  • Single battery in package fits the designated CMOS socket

Specifications

Battery TypeLithium

Questions about this item

How do I install this CMOS battery in the Sony Vaio VGN-FS215M without shorting the motherboard?

Power off the laptop, unplug the charger, and remove the main battery first; then disconnect the old coin cell by its lead, plug the new one into the same header, and reassemble — skipping the main-battery removal is the step most people forget.

When will the DBTLAP CMOS battery need replacement in the VGN-FS215M?

Expect roughly three to five years before the real-time clock starts losing time or BIOS settings reset, signalling the lithium cell is exhausted.

What is the first limitation that appears during continuous operation of this CMOS battery?

The lithium chemistry gradually loses voltage; once it drops below the threshold needed to keep the RTC running, the system clock drifts and CMOS checksum errors appear at boot.

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