Vello BG-C3 Battery Grip for Canon EOS 20D/30D/40D/50D
TheVello BG-C3is a battery grip designed for use specifically with the Canon 20D, 30D, 40D, and 50D digital SLR cameras. It accepts up to 2 BP-511A batteries to effectively double the camera's battery life. The included AA battery holder allows you to use 6 AA batteries for added convenience. The BG-C3 offers an alternate shutter release button, AF point selection, AE lock/FE lock button, and main dial to facilitate shooting in a vertical orientation.Works with the Canon 20D, 30D, 40D, and 50D digital SLR camerasAccepts up to 2 BP-511A batteries to effectively double the camera's battery lifeThe included AA battery holder allows you to use 6 AA batteries for added convenienceAn alternate shutter release button, AF point selection, AE lock/FE lock button, and main dial are provided to facilitate shooting in a vertical orientationPower Source:1-2 x BP-511A/514/511/512 Li-ion Batteries, 6 x AA Batteries, Also works with the Canon AC Adapter Kit ACK-E8 (Sold Separately)Tripod Mount Thread Size:1/4"-20Operating Temperature:32-104°F (0-40°C)Dimensions (HxWxD):5.6 x 4.4 x 3" (143 x 111 x 76mm)Weight:11.5 oz (325g) (Without Holder and Batteries)