Hello, I have a 16.5 Alumacraft competitor with a 60 hp evenrude tiller. It has two batteries. Both are brand new. (less then three months old) I have a battery switch for #1, off, #2, all. Wednesday after two full hours of using the trolling motor with 4 people in the boat, the batteries were dead enough to not start the motor. It would turn over once then not enough for a second shot. After turning everything off and waiting 15 minutes, I was able to start the motor on the next try. My question - I purposely had the switch on #2. Thinking If I was to kill the battery, I would have #1 to start the motor. But both seemed dead? When I got home I checked the batteries, one had 8.9 the other 10.6 Isn't the switch suppose to isolate one battery from the other when you just pick either #1 or #2? Why did both drain? I can honestly say the boat has been taken out four times since the new batteries. All the times have been very little motor use and a lot of trolling motor use. Is there a way for me to check to see if my motor is charging them? The volt meter shows 12-13 when running. Thanks in advance Dave.