Just got my new 20D with battery grip. But I have quickly discovered that I\ncan only get one shot out of a fresh set of alkalines installed in battery\ngrip and then upon the next shutter release...I get a blank display and dead\nbattery indicator flashing. I called Canon Canada...and their phone rep told\nme that the tech behind said I need to use high milliamp output batteries.\nObviously referring to rechargeable NiMH. But why do they claim it will run\nfor about 80 shots on regular alkalines??? I find this VERY disappointing\nfor one big reason I got the grip is to have that "limp home" ability with\nwidely available alkalines!\nAnyone else having this problem?