HP Forums

I changed the battery and now it's normal, i don't know why, but the issue was related to the battery on my case. Thanks for all the help.

You 're welcome!

Here is eried's very amazing thread :

http://www.hpmuseum.org/forum/thread-65.html


and least:

http://www.omnimaga.org/news/put-a-samsu...-hp-prime/

Regrets
Wolfgang

Hello!
I'd never took the battery out of the calculator before... but this time I did, everything was OK, no dust, no nothing! everything was the way it was supposed to be, then I put it back in place and after a couple of days using the calculator... it finally showed me those percentages (75% , 50% etc...) I've never seen before.
Weird but true!