Using non-rechargeable batteries on old HP calculators

[James P.G. Sterbenz]

Thanks all!

Alkaline cells work just fine in Bob Wolfson's adapter in my HP-35. For some reason NiMH cells weren't making good contact, but they are fairly old, and may have crud on the contacts, even though my DVM was reading ~1.3V, but the Fluke probes are nice and sharp.