good day all... there was some confusion as to whether nimh batteries could be used in the k200d... i'd spoken with pentax tech support this a.m., and was told that the manual was in error.... it contradicts itself!! NOTE: i was informed that nimh batteries, as well as the lithium aa's and regular old fashioned alkalines are perfectly acceptable... the "trickle" effect does NOT negatively impact the operation of the camera.... hope this helps all like me, were confused and dazed... p.s. pentax has not yet posted anything to this effect, and i asked respectfully for them to do so asap....