Originally Posted by WP007
I need to charge my AGM Group 27 batteries before putting them back into the boat. What is the best brand of charger and what brands should I avoid?
I have three chargers on board a Pro Mariner for my 12 volt Gel bank. I also have a 48 volt bank for my electric propulsion
system consisting of 4 12 volt AGM's in series. I have a ZIVAN NG-1 48 volt which charges the 48 volt bank and also doubles as a power supply to help move the boat along at 3 knots. I also have a Dual Pro 4 (they also make single
, dual, triple units also) which will charge each individual battery in the 48 volt string to keep them in "balance" so that no single
battery gets over charged or under charged and unblances the pack. All of the chargers have never failed me and I would recommend any of them. But, if you are paralleling any of your batteries and have a switch so that you can isolate the batteries when charging
then I think the Dual Pro will be best choice because you can keep the batteries in balance and the will be at the same charge when you are done charging