Posted By: jackwagon
Minnkota Charger - 07/13/21 02:59 AM
Need someone to confirm this is correct. I have a 3 bank charger. i have battery 1 12v cranking for motor. I have battery 2 & 3 12v wired in series for 24v to run trolling motor. i have all 3 banks hooked up to the batteries with red on positive and black on negative. It seems logical and was wired like this when i bought the bought. is this right. I attached a picture to show.
Backstory....I did not charge my batteries after last trip a month ago (yes, dumb) and the trolling batteries were very low. I hooked the charger up at night and in the morning i noticed i had two green lights and one red light. The red light was on one of my trolling batteries. Got to the lake and trolling motor would not work. I disconnected the bad trolling battery and ran on 12v. Got home and took the bad battery out to charge manually on a regular charger. When i hooked it up it said the clamps were reversed. Weird. I took it to Autozone to check and sure enough the guy got the same error. He switched the clamps backwards and said the battery got reverse polarity somehow. The positive and negative switched poles. Does anyone have a thought on this. I am going to buy a new battery and keep it wired like i have it but want to make sure i am not doing something wrong to cause this...
thanks in advance for any input.