One part stupid and one part odd – Late last fall I made a half attempt in selling my boat. I pulled my 2 lithium batteries out for the Minn Kota trolling motor and put back in 2 lead acid batteries for this potential sale. I did not sell it and decided to keep it so yesterday I was going to put back in the 2 lithium batteries. 2 of a 12 volt battery hooked in series for 24 volts.
Not many cables in the compartment but I used zip ties to manage the cables and swapped 1 battery at a time. After connecting both batteries I changed the Minn Kota PCL charger (3 bank) charging profile over to lithium for these 2 banks. Several seconds later I have a solid red light on each of the banks for the lithium but the 3rd bank to the starter battery is running just fine, WTF. The charger was just working fine about a week ago when I plugged it in with the 3 lead acid batteries.
I checked all of the connections which looked good and pulled the fuses which were all good. My lithium have wifi connection so I open the app on my phone and the batteries look just fine, WTF. In case it was just the charger I plugged the trolling motor in and grabbed the remote and it states motor not found, WTF. I pulled one lithium battery back out with the assumption of putting back in the lead acid. Before trying to swap back with the lead acid I disconnected the cables except the charger on the remaining lithium. Now that charger bank is working fine, WTF.
The stupid part is now I remember that I did not turn the power on at the trolling motor earlier…. I connected the 2nd lithium battery up and both banks on the charger are working fine and the trolling motor is working fine.
Now for the odd – The first attempt of connecting the lithium batteries I connected the cables to the trolling motor closest to the battery and stacked the charger cables on top of these which I got the solid red light. The 2nd time connecting the cables I connected the cables from the charger closest to the battery and stacked the cables to the trolling motor on top. I found this to be rather odd but I did not spend the time to swap the cables back to see if I could duplicate the solid red light error code and I was just happy all is working again.