Hi, I used the Zeiss Secacam 7 I just acquired. First set of batteries lasted me 2 months, I just bought some rechargeables and went to put them in but the camera won’t turn on . Maybe I accidentally had the camera on Setup or On instead of Off as instructions say is a must when swapping in new batteries . Could this have decharged the batteries or ruined my camera ? Otherwise I have been really happy with my first run using it: have caught deer, wild boar, the common genet, birds, badgers. Thanks for your help!!