Battery struggling to fully charge to 100%

[Svetony]

HI community,

I got my ProBook about a month and a half ago and I've noticed unusual behaviour with the battery and charging of it, so I thought it may be worth asking a question here before reaching out to HP to fix it.

When the battery goes low and I plug in the charger, it charges fairly quickly as it should to 80-90%, but then after that, especially above 95% it takes a lot of time, if not an hour, to charge it to 100%. Today is my second attempt to charge it to 100% by leaving it plugged in until it gets fully charged.

I haven't seen this kind of behaviour on other machines. Has anyone experienced this or similar issues, did you manage to resolve it and if yes, what did you do?

Thanks!

[TzortzisG]

Hi Svetony.

This is not common charging behaviour for the g8s.

I'd start here:

HP Notebook PCs - Testing and calibrating the battery (Windows) https://support.hp.com/us-en/document/ish_2268927-1713329-16 

[Svetony]

Thanks TzortzisG, I'll give it a go and see if that helps. 

[Svetony]

Tests were successful, using two HP's tools, both passed. So the very last thing I can do is to calibrate battery following HP's instructions in that article. 

[TzortzisG]

Exactly. It does sound like a bad battery though.... HP will take care of it (as they should) if calibration fails....

[Svetony]

So, I kept an eye on the battery and here's the summary - in a nutshell, the battery does charge up to 100%, however - after passing 97%, especially 99% it takes 20-30 minutes to reach 100%. I was also using BatteryMon app to monitor it (see the screenshot attached), so I'm not really sure what to do with this... Any advice?

[TzortzisG]

Hi again Svetony!

It's nice of you to report back with your progress. Uncommon anyways.

Advice: Keep battery until close to end of warranty, then contact HP for brand new replacement. Unless of course something changes in the meantime...