Bought one, got it, plugged it in and buncha blocks where it should tell me voltage and all that. Sent back, ordered another and the same thing!! Horizon hobby has been awesome but c'mon dynomite. The second one I put a car battery to it and it worked fine, but AC...FAIL. Not sure if i'll try again might just go a different charger. Horizon tech said they have not had any problems with this charger. I like the idea of plugging it in and charging 2 3s batteries @ 10 amp. What to do?? Thoughts?