My first 35MM camera was the SRT-102. I really like that camera. Now it's more sentimental attachment and novelty than serious use because I caved in and bought a very convenient digital camera. I just had it repaired and the seals replaced (related problem). I can look when I get home and confirm the battery specs for you. The numbers posted sure do sound familiar though. I seem to recall that the PX-13 can be replaced with two 625 batteries but my memory isn't that good after all these years.
Just a brief off topic comment, I bought a Minolta MX700 (?) when I was on a trip to Hong Kong many years ago thinking that I would like it's automation features as compared to the manual SRT-102. I never liked that camera and it has been pretty much sitting around for many years. With the manual lolly-pop and light meter in the viewfinder it is easy to set and predict what your picture will look like. With the MX700 it was a crap shoot (pun intended!). Maybe it was just me but even using the manual mode on the MX700 I was never happy with using that camera. The point is, I think that you have a really nice camera that is well worth preserving, just like a piece of quality vintage audio gear!
I think that I still have the owners manual for the SRT-102 and I may also have a service manual in PDF. I think the only difference between the 101 and the 102 is the lock-up mirror feature (used for transporting the camera in rough conditions) on the 102. Send me a PM with your email address if you would like a copy.
