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Battery pack of HP 25 calculator
08-06-2018, 07:42 AM
Post: #7
RE: Battery pack of HP 25 calculator
I have bought a HP 25C and when looking at the battery contacts in the calculator I dont see how it will be a good connection to the batteries. It was 2 NiMH batteries (GP cells 1300 mAh) inserted when I got the calculator. The connectors from HP 25C are 2 pcb studs with traces with some slodering. What I can see there is no good contact direct to the batteries. Should it be some other arrangement?
I connected the HP 25C to a power supply and it works fine, but when inserting the batteries the calculator does not seem to work properly. The batteries are charged. Measuerd 1.3 V on battery.
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RE: Battery pack of HP 25 calculator - Graan - 08-06-2018 07:42 AM

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