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Small silver coin cell battery with two wire leads and a white connector plug

DBTLAP

DBTLAP CMOS Battery for HP Compaq 6720s

SKU CH-FE7E-EPG3Q

A lithium CMOS battery replaces the BIOS RTC cell on HP Compaq 6720s notebooks

  • Battery TypeLithium
  • Compatible with HP Compaq 6720s notebook
  • Lithium chemistry for reliable BIOS timekeeping
  • Replacement-grade part restores motherboard RTC function
  • Tested before shipping to ensure proper operation
  • Single battery included for straightforward installation

Compatible CMOS Battery for HP 6720s

This lithium CMOS battery is a direct replacement for the HP Compaq 6720s business notebook. It restores the system clock and BIOS settings when the original cell has failed. The unit is supplied new and tested before shipping. It is intended for motherboard RTC backup, not main laptop power.

Sustained Reliability

The lithium chemistry provides a stable voltage output over the long service life required for real-time clock circuits. It maintains BIOS configuration and accurate timekeeping during extended periods when the notebook is unplugged or powered off. Each cell is verified before dispatch to ensure consistent performance.

Pre-Installation Checks

Confirm the notebook model is exactly the HP Compaq 6720s before ordering. This part replaces only the coin-cell CMOS battery on the motherboard and will not address main battery runtime issues. Ensure you are comfortable opening the chassis to access the motherboard socket.

Highlights

  • Compatible with HP Compaq 6720s notebook
  • Lithium chemistry for reliable BIOS timekeeping
  • Replacement-grade part restores motherboard RTC function
  • Tested before shipping to ensure proper operation
  • Single battery included for straightforward installation

Specifications

Battery TypeLithium

Questions about this item

Does the lithium CMOS battery produce any audible noise or heat while the HP Compaq 6720s runs continuously?

No, a lithium CMOS cell is completely silent and generates no perceptible heat during normal operation.

Must the notebook already have its main battery and AC adapter working for this CMOS battery to keep BIOS settings?

Yes, the CMOS battery only maintains the real-time clock and firmware configuration when system power is removed.

Will this replacement CMOS battery work reliably in an older HP Compaq 6720s that still uses its original motherboard?

It is built as a direct replacement for the 6720s and is tested before shipping to ensure proper fit and function.

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