HP-19C Batteries

[dmh]

Vintage Calculators sell 3D printed battery packs for these with 1000mAh Tenergy Nickel-Cadmium batteries.

I'm currently using 4 x standard AA batteries.

I assume the existing low battery circuitry will work with at least the NiCad batteries?

(02-14-2023 12:09 AM)teenix Wrote:  Hi all,

Just wondering what type of battery is being used these days and whether the low battery indicator is still of any use.

cheers

Tony