Hi. I have a Blue Smart 12/30 3 output charger on my boat. I am going to mount it soon. I should use it to charge 3 12 volts batteries mounted in series to give energy to a 36 volts trolling motor. Can I connect the each output to each battery without keeping the series line between batteries? Or I need to cut off the series before connecting the charger? My doubt comes from the fact that the charger has only one line for negatives.
Thx