After trying out magic lantern on my 5d mark iii version 1.2.3 and properly uninstalling it, i noticed my battery life was terrible (i am using a 6 AA battery grip genuine canon) and i was getting less than 15 minutes with brand new alkaline aa batteries. No matter how many times i got new ones for it was now saying they were low. I used a battery tester and they were like new still full. And occasionally even though i fully uninstalled ml, my camera after believing it was too low battery it would not turn on and show the flashing battery icon. Has Magic Lantern damaged my camera? I really need help as this camera needs to be used for a shoot on Wednesday and it currently can not be used for more than 15 minutes vs originally 2 hours or so with fresh batteries, even though magic latern is supposedly uninstalled. I used the method mentioned in the F.A.Q for uninstalling.