USB Woodstock charger?

[rprosperi]

(05-30-2023 09:33 PM)smp Wrote:  Thanks very much, folks! Sorry for the dumb question.

I already have a good "smart" charger from my HP-41 days, so all I'll need to do is modify the Woodstock battery holder (I'll hate to do that) in order to get the batteries out, or obtain an already modified Woodstock battery holder and some batteries.

Does anyone here sell 3D printed Woodstock battery holders?

Actually it's easy and non-invasive.

Holding the pac with the batteries facing up and exposed terminals toward you, cut the bottom (towards you, at terminal end) of the center strip with an XActo knife. Cut the scored, recessed line parallel with the ends of the cells. It's only a 6-7mm wide strip x 1-2mm high. LEAVE THE OTHER END INTACT.

Now you can pry the cells out, one at a time, just moving the now-loose end of the center strip out of the way. The old, original cells probably have the spring at the far end stuck to it, making it a bit fiddly this first time. Once removed, clean the spring with a glass eraser and then DeOxit (to remove all the crud and oxidation) and you can most likely re-use it.

Easy to do.