Wireless charging for a HP-25 calculator

[rprosperi]

(05-12-2021 02:33 PM)Maximilian Hohmann Wrote:  And I will definitely install this wireless pack into my wonderful Panamatik Low Power Woodstock because, for some reason I could never find out (my guess is the voltage converter for the GPS receiver), it keeps draining it's batteries.

Max, thanks for this comment!! I too was having an issue with my WLP-25E draining batteries in only a few weeks, even if not used at all. I even replaced the batteries with new Tenergy AA flat-top cells, and the problem remained. So after seeing you comment, I hunted in the manual to check if there is a master power-on/off setting for the GPS and indeed there is, and indeed I found mine had been left on, for many, many months, thought I clearly forgot about it.

To turn GPS OFF, press [EEX] while in GPS mode (activated by [g] [g] [STO] on the WLP25). It will then tell you "GPS OFF". This is an on/off toggle so make sure you are leaving it turned off.

Thanks again for mentioning that!