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Small silver coin cell CMOS battery for Portege Z930

DBTLAP

DBTLAP CMOS Battery for Toshiba Portege Z930

SKU CH-057Q-9NP51

Lithium CMOS battery replaces the motherboard RTC cell in Portege Z930 laptops

  • Battery TypeLithium
  • Direct motherboard compatibility for Portege Z930
  • Lithium chemistry delivers stable CMOS power
  • Single replacement unit restores BIOS settings
  • Pre-tested component ensures reliable operation
  • Designed for motherboard RTC not main battery

Direct replacement for Portege Z930

This CMOS battery restores the real-time clock and BIOS settings on a Toshiba Portege Z930. It is a lithium cell designed for the motherboard, not the main laptop battery. The part arrives new and tested, ready to replace a faulty or depleted original.

Fits the motherboard battery holder

The cell slots into the existing CMOS socket on the system board, requiring no soldering or adapter. Swapping it restores date, time and firmware configuration retention when the notebook is unplugged. No additional cables, brackets or firmware updates are needed for installation.

Low-drain lithium chemistry

The battery draws only microamp-level current to keep the RTC running, so it adds negligible load to the power subsystem. Operation is silent and produces no measurable heat inside the chassis. Typical service life spans several years under normal use.

Highlights

  • Direct motherboard compatibility for Portege Z930
  • Lithium chemistry delivers stable CMOS power
  • Single replacement unit restores BIOS settings
  • Pre-tested component ensures reliable operation
  • Designed for motherboard RTC not main battery

Specifications

Battery TypeLithium

Questions about this item

How long does the lithium CMOS battery last before it needs replacing?

A lithium CMOS battery typically holds charge for several years under normal use; exact life depends on how often the Portege Z930 is powered off.

Does the battery generate noticeable heat or noise during continuous operation?

The CMOS battery is a passive component with no moving parts, so it produces no audible noise and negligible heat while the laptop runs all day.

What connector does the CMOS battery use to fit the Portege Z930 motherboard?

The replacement ships with the original two-pin plug that matches the Portege Z930 CMOS header, so no extra cables or adapters are required.

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