On board charger ?

Anyone know anything about them ,, I need one for my boat . I have 2 battery's 1 big deep cycle for the trolling motor and half the led light , the other is a 550 amp starting battery for the motor and the other half of the led lights ,the motor charges this one


What brand ?? AMP ?? one or two bank do i need

Dual Pro, you cant go wrong in my opinion. And so you don't regret it later, like I did!, get a 2 bank. They have a 2 bank 6 amp per bank,model RS2, for around $150. Does the job and they last forever.....my .02