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Archived This topic has been archived. Information and links in this thread may no longer be available or relevant. If you have a question create a new topic by clicking here and select the appropriate board.
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 It seems to me that something's wrong with my unit. I've been using it for a couple of days, perharps for a total of 2 hours combined, or more. I haven't seen the battery go below 100% EVER. This is very strange.

 

The calculator arrived on thursday (3 days ago). The battery was absolutely flat. The calculator wouldn't even turn on. I plugged it in at uni, (where I picked up the shipment) for about 15 minutes to test it, in case I had to return it. Then I turned it off and only then I unplugged it. Then I got home and left it charging overnight. Ever since then, the battery level indicator has only shown 100%, full charge, even after hours of use. You would expect to see it drop at least to 99%, but that hasn't happened.

 

The model number of this unit is NW280AA#ABA. It came with very very old firmware, 2013 stuff which leads me to believe I have a unit which has been sitting on a shelve for quite some time. I don't know if that has to do with it. Since then, I updated the firmware. I am running 2014 12 3 (6975) right now. Hardware revision A. Serial no. is 4CY413****.

5 REPLIES 5
HP Recommended

The battery indicator isn't very granular.  If I recall correctly, the step below 100% is 75%.

HP Recommended

Hi!, ivan747:

 

Welcome, to site.

 

1) Please, see the information  and youtube video, from ...

https://groups.google.com/forum/#!topic/comp.sys.hp48/G-pdlR3AVQ0

 

2) Check in your HP PRIME, if the ultimate version is equal to my HP PRIME ...

HP PRIME Ultimate Version.jpg

 

If not, you needed reinstall update, from ... ftp://ftp.hp.com/pub/calculators/Prime/

 

Other specification, you can see, from ... http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv021.cgi?read=248005

 

The battery image, is ...

HP PRIME Battery.JPG

Kind Regards !.
Have a nice day !.
@Maké (Technical Advisor Premium - HP Program Top Contributor).
Provost in HP Spanish Public Forum ... https://h30467.www3.hp.com/
HP Recommended

Here is a link to a battery perentage graph based on pressing a key once per minute at lowest brightness.

http://cl.ly/SHL7

 

If you are interested, there's also a video of how this data was collected.

https://www.google.com/url?sa=t&source=web&rct=j&ei=UivqVMqGFfHhsASl2YLQBQ&url=http://www.youtube.co...

 

 

HP Recommended

Hi!, ivan747:

 

Please, see the four (4) reference, from ... http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv021.cgi?read=247994

 

Litio Ion Battery.JPG

Kind Regards !.
Have a nice day !.
@Maké (Technical Advisor Premium - HP Program Top Contributor).
Provost in HP Spanish Public Forum ... https://h30467.www3.hp.com/
HP Recommended

Thanks to everyone for the fast replies! I have a better understanding of this now. I would have expected to see 4 battery bars instead of a percentage, if there were only 5 battery levels but it's okay. Thanks to all of you :smileyhappy:

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