2 Bank battery charger

[crestlinermusky]

I have a 1975 Evinrude 115 that runs great. I have 2 batteries on the boat , one for the big motor and one for the electric trolling motor. Minn Kota makes a 2 bank alternator that states it will charge both batteries off of the big motor.
My question is, has anyone tried this and can I ruin my Rectifier with this setup. Everything works great right now and I charge my batteries at home as they need. Any advice would be appreciated.

 

[F_R]

Any notion of charging the trolling motor battery is wishful thinking. It requires too many Amps for too long. Maybe if you run the big motor all day long.

 

[GA_Boater]

I think calling an ACR an alternator borders on

 

[oldboat1]

https://minnkotamotors.johnsonoutdoo...Alternator.pdf

The minimum requirement for the Minn Kota device appears to be a 12 amp motor alternator. I think the '75 Evinrude would have 6 amps, but check. (Check the Minn Kota model as well -- the one for charging two batteries might require a higher amp alternator.)

You might consider a battery isolator for charging both battery banks, but check amperage requirements and recommendations.