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Small coin-cell CMOS RTC battery for ASUS UL30A laptop motherboard

DBTLAP

DBTLAP CMOS RTC Battery for ASUS UL30A

SKU CH-31E9-Q3GAY

Lithium CMOS RTC battery replaces the BIOS clock cell on ASUS UL30A motherboards

  • Battery TypeLithium
  • Replaces a faulty CMOS battery to restore BIOS settings
  • Lithium chemistry provides reliable real-time clock power
  • Tested before shipping to confirm correct operation
  • Designed for ASUS UL30A motherboard compatibility
  • Single battery included for direct replacement

Direct replacement for ASUS UL30A

This CMOS RTC battery is a direct replacement for the ASUS UL30A laptop motherboard. It is a lithium coin cell, not a main laptop battery. The part is new and tested before shipping. It restores BIOS settings and system clock operation.

Steady voltage retention over years

The lithium chemistry delivers a stable voltage across the full service interval. It maintains the real-time clock and CMOS memory without the voltage sag seen in aged cells. The battery is designed for continuous low-current draw rather than burst loads. Consistent output prevents configuration loss during long shutdowns.

Low self-discharge and minimal heat

The cell runs cool because the current draw is in the microampere range. Self-discharge is very low, so the battery holds charge during storage and inside the laptop. No audible noise is produced. Power consumption is negligible and does not affect the main battery runtime.

Highlights

  • Replaces a faulty CMOS battery to restore BIOS settings
  • Lithium chemistry provides reliable real-time clock power
  • Tested before shipping to confirm correct operation
  • Designed for ASUS UL30A motherboard compatibility
  • Single battery included for direct replacement

Specifications

Battery TypeLithium

Questions about this item

Does the lithium cell generate noticeable heat or noise during continuous operation?

No, the lithium CMOS cell produces no heat or audible noise while maintaining the real-time clock.

What must I already have to install this battery in my ASUS UL30A?

You need a small Phillips screwdriver and access to the motherboard compartment.

Will this replacement cell work with the original BIOS firmware on my older UL30A?

Yes, the battery is tested for compatibility with the ASUS UL30A motherboard and keeps CMOS settings intact.

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