Re: Battery question on TI SR-10 or SR-11

From: Katie


All three calculators (SR-10, SR-11, HP-35) use 3 AA nicad batteries. All could run off of alkaline (or other) AA batteries but it would difficult to get them to fit into the space provided given the need for spring loaded contacts. The HP-35 uses an externally replaceable battery pack, the SR-10/11 use a hard wired internal battery pack. You could probably fit a 3xAAA battery holder in any of these calculators however, that might be something to try. I think that the HP-35 would be a much better choice for your collection. It hard log and trig functions while the SR-10/11 did not, it was the first real hand held slide rule replacement.