koolertron-New vertical support Battery Grip for the Canon EOS 20D 30D 40D 50D DSLR SLR Cameras (Electronics)
On a Canon 50D. NO BATTERIES with AA or AA batteries into the store because less powerful one BP511 battery and especially weird discharge very quickly without using the camera (while to off) ... (Tested with new AA batteries 2500mAh 2700 mAh and new
