There are rechargeable CRV3 lithium batteries, but Pentax specifically says not to use in the K100D. Some people have reported some success with some brands -- but also, reported the camera smoking and other disasters.
I'd recommend sticking with NiMH, or alternately, using non-rechargeable Lithium AAs or CRV3 batteries. Non-rechargeable lithiums are a particularly good choice if you tend to take fewer rather than tons of pictures, or if you often go a couple of weeks between photo outings. Unlike NiMHs, they won't loose charge just sitting there, so you can be sure they'll be ready to go when you are. And, you'll get 2000-2500 shots (assuming minimal flash usage) per set of batteries. (Lasts me a month and a half without spending a single minute thinking about power.) Downside of course is that they're disposable -- make sure to recycle them at least.
|