CMOS Battery for HP Envy 13-d102ng - which one is right / needed?

[Kev18_]

When I start up my laptop, the following error message appears:
"The CMOS Checksum is invalid"

The date and time are also incorrect after booting up. I suspect that the CMOS battery is defective and needs to be replaced. My question is: Which battery (model, name) is the right one for my laptop? I've already searched on Google, but didn't find anything quickly.

I look forward to any help.

Best regards

[Paul_Tikkanen]

Hi:

Chapter 3 of the service manual has the RTC (CMOS) battery part number.

HP ENVY Notebook PC (model numbers 13-d000 through 13-d099 and 13-d100 through 13-d199) Maintenance ...

RTC battery (includes cable and double-sided adhesive)    HP part # 829306-001

Chapter 5 has the RTC battery removal and replacement procedure.

The problem will be...where will you be able to find one?

I checked eBay.de and found nothing, and HP does not sell the battery.

As you can see in the illustration, it has a wire attached to it.

[Kev18_]

Hi, thank you! Okay the part no. won't help if HP doesn't sell it. The problem is, there are plenty rtc batteries on ebay, amazon.de or google shopping - but which one fits? What are the correct specs? I found this f.e. for HP Envy 13:

https://rometech.de/products/rtc-cmos-battery-for-hp-envy-13 

Is this the right one or do I have the difference between Pavillon 13 and other 13" models? 

What a bummer....

[Paul_Tikkanen]

You're very welcome.

The one you found is probably what you need.

What I'm thinking is that the battery is nothing more than a standard CR2032 coin cell battery with some wire leads spot soldered to it (which is why the cable is there).

I had a RTC battery that looked just like that one in a Dell Latitude notebook PC that had a dead CMOS battery.

I removed the battery with the cable and undid the plastic wrapping around it.  I was able to easily remove the wire that was attached to the battery.  One lead was attached to one side of the battery and the other lead to the other side.

I just got a regular CR2032 coin cell battery and electrical taped the wire leads back on, and the battery worked great.

I didn't even bother to solder it back on.