Anyone have a Minn Kota Copilot or Ipilot? need help

I just got this Minn Kota Copilot for my boat and after getting some work done to it, I mounted it on the boat and it worked fine last weekend down in Fourchon. Had no issues and was very impressed with it. Went down to the camp in Dularge this weekend to do a little fishing. Got to the first spot, plugged it in and heard the normal "BEEP" it always gives then started to use the remote and everything was fine until I lowered it into the water and it worked for a few seconds then just quit on me. I messed with the trolling motor as much as I could on the water and nothing was happening it just would not work. Pushed the "test" button on the trolling motor and it showed full battery. It was working fine and then all of a sudden nothing.... no beeps no nothing.... Has anyone ever had this issue before?? I am hoping it is just a dead remote battery because all of my connections seem to be fine. any help is greatly appreciated because it put a huge hamper on the fishing trip.... can't do much sight fishing without a trolling motor