Hey all, I'm having a problem with my graph shutting off suddenly while under power. I'll be trying to scan a brushpile and throw a marker buoy, and all of a sudden it'll shut off. I checked the connections, the battery, and the back of the unit. Anybody had this happen before?

It only happens under power of the motor. The unit is on it's own battery, except for the charger is hooked up to all 3 batteries I have.

Thanks in advance....Cp