Re: Classic Battery Packs and Voltage Message #2 Posted by Tony Duell on 27 Apr 2004, 8:45 p.m., in response to message #1 by Charles
No, too high a voltage (within reason) won't cause problems -- 4.1V will be fine
What you need to do is measure the voltage _on load_ inside the calculator (you could start, actually, by measuring the voltage between the middle pin on the charger conenctor and either of the outside 2
(which are shorted together if the charger is not plugged in) with the machine turned on. If you get too low a voltage there, check your battery contacts. If that's fine, check the voltage at the logic PCB pins (the pinout is in my 'HP67 notes' in the articles forum on this site I think).
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