CMOS Battery

[Sugargurl]

I need to know if my system has a CMOS Battery.

I tore it down today and can find no CMOS Battery anywhere or find any mention of one in any maintenance manuals.

Thanks for any help as to if it has one and where it is located..

Thanks in advance and have a great day.

[Huffer · Accepted solution]

There is not one. It has an internal battery. In many newer laptops with internal "non-removeable" battery the main battery does double duty as the CMOS/RTC power source. Why do you think you need to replace the clock battery?

[Sugargurl]

Bought a desktop and a laptop at the same time and the desktop CMOS Battery died.  Replaced it and figured that with both systems being the same age that if there was a CMOS Battery in the laptop it would be a good time to replace it also.

Thanks for the quick reply and info.

I been searching like forever and everywhere to get an explanation on this.

Thanks again.

[Huffer]

Run a battery health check in the HP Support Assistant and see if maybe the main battery needs replacement. If you have not received a warning it likely does not, however.