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Do Outboards charge their batteries?

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Old 06-07-2005, 07:52 AM
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Default Do Outboards charge their batteries?

I was wondering, do outboard motors have altenators, do they charge up their batteries?
I just bought a boat w an '86 Yamaha 200.
Do OBs from that era charge up the batteries or will I be bringing a battery charger down to the boat every week?
Thanks
Evan
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Old 06-07-2005, 07:55 AM
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Default Re: Do Outboards charge their batteries?

Don't know about Yamaha, But Mercs had 40 amp alternators. I'm sure those are close to the same. Any dealer should be able to tell you.
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Old 06-07-2005, 08:00 AM
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Default Re: Do Outboards charge their batteries?

Yes, they charge from the field coil, but it is usually only 30 amps or so, okay as long as you aren't using a mondo stereo.
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Old 06-07-2005, 08:07 AM
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Default Re: Do Outboards charge their batteries?

I'm running 3 automatic bilge pumps, and it's raining daily, (Oregon)
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Old 06-07-2005, 10:23 AM
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Default Re: Do Outboards charge their batteries?

You shoud get an onboard charger or maybe one of the new solar chargers.
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Old 06-07-2005, 11:29 AM
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Default Re: Do Outboards charge their batteries?

If it's raining every day, what good is a solar charger? LOL!!

My old 50 Merc keeps my battery topped off. No radio in the boat, but I do operate the fish finder and a Minn Kota trolling motor off the same battery... never had it fail yet. It's an Optima though... don't know if that makes a difference.

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