I found an HP-33e calculator in box with manuals and charger being discarded. The batteries had corroded and broken a small tab on the battery door, and when I cleaned the corrosion off the battery tabs on the calculator, one of the broke off. The battery holder itself was in good shape, but it requires NiCd's without tips, so I used some copper flashing (also found discarded) to fashion an end spring. It works great! Here it is before I did the rework, running off an external AA pack.

- posted by Leigh @ 21:37 z