HP-21 battery terminals Message #1 Posted by Natalie Wilkie on 26 Mar 2003, 4:13 p.m.
Hi,
I was given an HP-21 and the previous owner had replaced the batteries with standard 1.5 volt batteries. Does anyone know if this may have damaged it and can you tell me which pin is +ve and -ve.
Thanks
Natalie
Re: HP-21 battery terminals Message #2 Posted by db(martinez,california) on 26 Mar 2003, 9:32 p.m., in response to message #1 by Natalie Wilkie
according to the archives that does no harm (if you have any doubt then use used batteries) . the pin on the same side as the enter key is pos.
Re: HP-21 battery terminals Message #3 Posted by Natalie on 27 Mar 2003, 3:45 p.m., in response to message #2 by db(martinez,california)
Thank you
Re: HP-21 battery terminals Message #4 Posted by David Smith on 27 Mar 2003, 6:09 p.m., in response to message #1 by Natalie Wilkie
If you have a battery holder that has been opened up, the battery polarity is molded inside the holder.
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