I sent them an email, I thought maybe it was a setting, but now I think it's busted. I put what I thought were two new charged batteries. Picked it up the next day and it said "check battery" or something similar. The scales that show %of charge showed one at 100%, the other 0. I figured Maybe I picked up a dead battery or one was defective. Put in a for sure fully charged set, and turned it off. Next morning turned it on to check. Again, one fully charged, one fully discharged. It's only 40-50 bucks or so, but I figure they will make it good.