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Finally I got my HP-67!
01-08-2020, 05:34 PM
Post: #7
RE: Finally I got my HP-67!
(01-08-2020 04:29 AM)Craig Bladow Wrote:  Now we need some one made a battery case, similar to the case that holds 3 AAAs, made for the classic calculators and available on TAS (Search for "Rechargeable HP Calculator Battery Classic CASE"), but instead adapts a common (i.e. cheap) lithium-ion camera battery. I choose a camera battery as these are well supported by stand alone chargers.
I saw the item on auction. You will have to remove springs and cut the internal walls.
As the batteries compartment in 67 is large (3 AA bateries), I belive a small plastic rectangular box that could fit in it, leaving space for charger.
Also, consider what I said: once you put LI-Ion in one HP calculator, you will replace in all, as NI-MH are a risk to them and will never remove them again or for a long time...
So, some wires are one acceptable solution. Or small cooper sheets soldered to batteries and going down to make contact with calculator.
Best regards,
Artur

ARTUR MARIO JUNIOR
BRAZIL
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Messages In This Thread
Finally I got my HP-67! - Artur - Brasil - 01-08-2020, 01:20 AM
RE: Finally I got my HP-67! - Craig Bladow - 01-08-2020, 04:06 AM
RE: Finally I got my HP-67! - Craig Bladow - 01-08-2020, 04:29 AM
RE: Finally I got my HP-67! - Artur - Brasil - 01-08-2020 05:34 PM
RE: Finally I got my HP-67! - mfleming - 01-08-2020, 05:47 AM
RE: Finally I got my HP-67! - Craig Bladow - 01-08-2020, 05:28 PM
RE: Finally I got my HP-67! - Dave Britten - 01-08-2020, 06:09 PM
RE: Finally I got my HP-67! - Dave Britten - 01-08-2020, 08:18 PM
RE: Finally I got my HP-67! - Dave Britten - 01-08-2020, 09:46 PM
RE: Finally I got my HP-67! - mfleming - 01-09-2020, 02:42 AM
RE: Finally I got my HP-67! - Craig Bladow - 01-08-2020, 07:22 PM
RE: Finally I got my HP-67! - teenix - 01-09-2020, 12:21 AM
RE: Finally I got my HP-67! - teenix - 01-09-2020, 01:40 PM



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