Suzuki DF150 & DF175 battery-isolator

[localboy]

Read this and it was the first time I've heard this benefit in our outboard. Can someone w/ electrical smarts explain how this would work. Would I have to have my battery switch to "both", in order to take advantage of this?

Both motors also come with a standard battery-isolator system. You can drain down your boat's house battery by powering trolling motors, electronics or livewell pumps while still maintaining a fully charged cranking battery. When you start the motor, the system senses the low charge in the house battery and quickly brings it up to full charge.

http://www.flyfishinsalt.com/boats/boat-engines/suzuki-150-and-175-hp-four-strokes

 

[Chester]

It sounds like an automatic charging relay (ACR) comes standard with the motor.

 

[Matt Gurnsey]

There is an optional second charge output on the motor, although I don't think we've ever utilized it as the output isn't very great.

 

[thataway]

I believe that all of the Suzuki 150 and 175 have that second output. My understanding is that is is a diode type of isolator. I do not know the capacity, but I thought it was more than a trickle charge.

You can charge both batteries at once. One is the battery connected to the "start" circuit. There is a connector (white I believe) under the cowl for the second charging circuit. The PDF brochure for the 150/175 shows that there are two regulators in the circuit--thus I suspect that the second circuit is possible of the full 44 amp output.

 

[Chester]

Interesting.