I bought this battery grip, because me the Canon battery grip was just too expensive. I have not regretted that decision. The Phottix battery grip adds up to 100% ind optics my Canon EOS 650D one, it should be noted no difference. The battery grip is supplied with two rechargeable batteries that can be charged with the original battery charger. Finally, one has "right thing in his hand." The camera works by the battery grip significantly "massive", but in a positive sense, because before felt the Canon somewhat "easy" to. Especially now that I've gotten used to the battery grip, even strike out without handle; just feels wrong. The handle has shot photos for edgewise own controls, so that you naturally can trigger the camera using the battery handle without dislocate itself. The term has naturally doubled; so I can get my quite power-hungry EOS 650D (touchscreen zeih much electricity) carry on extended tours. A strong buy recommendation and 5Sterne