Hey guys. Could you give me a hand? I know you can use the BP-511 and BP-512 in the 300D, but I wondered if there are any others? Specifically one that will last longer. I notice they are only 1100mah. Whereas the AA NiMh's i used to use were 2100mah's. Anyway I can get a battery with more power? And also, will the Charger that came with the camera charge those "higher-powered" batteries that I am yet to find out if they exist. Also - is there a non-rechargeable version that I am able to use. Say I am stuck somewhere, the battery is dead and I wanna duck into a shop and pay a disgustingly high price for a non-rechargeable battery. Thanks for any help!