|Re: Craigslist find and fix - HP 19C|
Message #12 Posted by Geoff Quickfall on 13 Aug 2012, 1:17 p.m.,
in response to message #1 by Matt Fegenbush
Do not, Do not, Do not, Do not, Do not use the adapter!
Even if you can guarantee the NiCads are perfect and the contacts to the machine are perfect, you cannot guarantee that the electrical contact will always be live.
Remember, this is a Woodstock (correct me if I am wrong) and suffers the same fate when the resistance is infinite due to:
No batteries inserted,
Bad batteries inserted,
No contact between the batteries and the calculator.
I dismantle the battery pack, and insert charged NiCads in mine. I never use the wall wart (adapter) as I cannot guarantee that even a new NiCad may have a flaw. When a charge is required, I rremove the pack and charge them outside the calculator.
Edited: 13 Aug 2012, 1:18 p.m.