I would imagine the one or the other knows the problem: pimped the Alpha (any model), if not in the tray # 2 plugged at least one original Sony battery when using battery / portrait grips. Anyway, it was in my case, no Fremdhersteller- battery was previously chipped accordingly, that he would have the camera "trick" can. Actually, I had no hope ... but with the Patona batteries it works at last! Two Patona batteries in the handle and the camera goes on without complaint. Bravo and thank you!