Phottix Battery Grip + 2 batteries (for Canon EOS 550D 600D 650D 700D) replaced BG-E8 and LP-E8 (Electronics)
Meanwhile, I've still bought one for the second camera and both function properly. Nothing hooked or wobbles, the workmanship is very valuable and he is great in the hand. The battery is good at that track, you hear no rattling or otherwise. I got it