Charging deep cycle battery from boat motor.

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Charging deep cycle battery from boat motor.

Unread post by cruiserclint » December 28th, 2017, 7:04 am

I'm about to instal a 12V rectifier regulator on my 15hp Yamaha outboard motor. It will convert the 12V 80W AC unregulated output of the motor to 12V 80W DC regulated power for supply to the deep cycle battery that runs the minn kota electric trolling motor.

The plan is to supply some charge to the battery while the Yamaha is running. While it won't fully charge the battery unless I'm running in the Sydney to Hobart race, I'm hoping it will slow the rate of discharge over the course of 1 or 2 days fishing with the electric motor.

My question is this- will the output from the rectifier regulator be okay for the battery, given that it will be a max of 6.66amps? Will it be harmful to the battery in that, will it continue to pump in 6.6amps even if the battery is full and be harmful to it?

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