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Small round lithium CMOS battery with wire lead

DBTLAP

DBTLAP CMOS Battery for Samsung NP900X1B-A02US

SKU CH-78GG-39397

Replacement CMOS RTC BIOS battery for compatible Samsung laptops, tested before shipping

  • Battery TypeLithium
  • Compatible with Samsung NP900X1B series laptops
  • Lithium chemistry provides stable CMOS power
  • Pre-tested unit ensures reliable BIOS timekeeping
  • Direct replacement for faulty RTC batteries
  • Single battery package ready for installation

Compatible CMOS battery for Samsung NP900X1B series

This DBTLAP lithium CMOS battery replaces the RTC BIOS cell in Samsung NP900X1B, NP900X1B-A02 and NP900X1B-A02US laptops. It restores system time and BIOS settings when the original battery fails. The part is designed for motherboard use only, not as a main laptop power source.

Tested lithium cell with low self-discharge

Each battery is tested before shipping to verify voltage and capacity. Lithium chemistry provides stable output for real-time clock and CMOS memory with minimal power draw. Normal operation produces no audible noise and negligible heat inside the chassis.

Single replacement unit in the package

The box contains one CMOS battery ready for installation. No additional cables, brackets or software are included. The accessory simply restores firmware timekeeping and boot configuration on the listed Samsung models.

Highlights

  • Compatible with Samsung NP900X1B series laptops
  • Lithium chemistry provides stable CMOS power
  • Pre-tested unit ensures reliable BIOS timekeeping
  • Direct replacement for faulty RTC batteries
  • Single battery package ready for installation

Specifications

Battery TypeLithium

Questions about this item

How do I install this CMOS battery in my Samsung NP900X1B-A02US and what step is often missed?

Power off the laptop, unplug the charger, open the case, unplug the old battery connector, fit the new lithium cell, reconnect the plug, then reset the BIOS date and time — the step most people forget.

What maintenance or replacement will this CMOS battery need later?

The lithium CMOS battery typically lasts several years; when the system clock drifts or BIOS settings reset, replace it with the same type — no periodic maintenance is required.

What limit appears first under sustained use of this CMOS battery?

The 2–year shelf life of the lithium chemistry is the first limit; after that the cell voltage drops and the RTC can no longer hold time reliably.

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