Originally posted by Andrey514 How many shots can 30 th make on one battery?
That depends on a lot of factors such as flash, LiveView, standby time, .... The K-30 uses the same power source options as the K-r (and at least in terms of AA batteries, the K-x), however, I believe the K-30 uses more power than the K-r so in general it gets fewer shots per power pack than a K-r.
However, I tend to think the K-5 uses more power than the K-30, but it also uses a larger capacity power pack. Further the K-5 has an optional grip to extend your power capacity. If the number of shots between power pack swaps is a critical factor for you, I'd go K-5.
For me it is a non-issue. If I pick up my K-30 with a fresh set of eneloops, I would be quite surprised if I didn't go the whole day on that set of batteries. Regardless, I always have a backup power pack and it takes a dozen seconds to swap out. If I were, for example, planning a lengthy round of interval shooting, I would use an adequate external power pack for my camera, so it still isn't an issue for me.