Originally posted by johnha I'd be wary of low mah rechargeables, I locked up my MZ-M by shooting it with almost dead AA's in the grip - I thought it had killed the camera (mirror locked up), nothing I tried would fix it. I gave it one last go a day or so later with fresh batteries and it dropped the mirror and seemed to recover. The MZ-M isn't an MZ-S but I guess much of the internals may be similar as they were from the same era.
15 rolls was about what my Z-1 managed on the 2CR5s, I'd stick with the non-rechargeable CR2s.
The immediate plan is not to do the rechargeables. I’ll be visiting Moscow and St. Petersburg in a month and the MZ-S will be my primary camera for the trip. I figure 3 pairs of disposables should easily get me the entire trip, so I’ll bring 4 or 5 pairs. It would be nice to travel with two pairs of rechargables and a charger. One pair gets me through the day, the other pair is in the hotel topping up. But I don’t know if the rechargables will get that far and I don’t want to rely on untested equipment. Lately I’ve been shooting the MZ-S a lot because I got it three months ago, and I wanted to fully test and trust it. After the trip I’ll shoot it less because I’ll be focusing more on my medium format cameras. Then the disposables will be fine too since it will take me months to go through 15 rolls.