View Full Version : Does my outboard charge my battery?
SummerTrance
08-04-2008, 11:24 AM
Hey there,
Can anyone please tell me if my battery charges while my outboard is running.
I have a 2003 Johnson 70hp 4stroke.
Thanks.
Noelm
08-04-2008, 11:33 AM
certainly does, unless something is stuffed of course.
Outsider1
08-04-2008, 11:38 AM
Yes, providing it is working correctly of course. I assume it is basically the same as the current model, according to the specs it has a 25A alternator.
Cheers
Dave
SummerTrance
08-04-2008, 11:55 AM
Thanks guys. I assume it's running properly. I've had no dramas. Its only done 130 hours and just had a major service. I was just wondering if it did charge or not. It also got a brand new battery in October so all should be sweet.
Outsider1
08-04-2008, 12:01 PM
Any outboard that has electric start, EFI, and electric Tilt and Trim is guaranteed to have an alternator ST. It would not operate for long otherwise.
Cheers
Dave
ozscott
08-04-2008, 01:53 PM
Its a regulated Magneto I think
Outsider1
08-04-2008, 02:25 PM
Its a regulated Magneto I think
you are right there ozscott. The Johnson specifications sheet actually listed that it has an (25A) Alternator, but a check on the part diagramatics shows it is as a regulated flywheel coil i.e. magneto.
Most (charging) outboards would have Magneto/Stator set up rather than an Alternator I guess!?
Cheers
Dave
ozscott
13-04-2008, 05:33 PM
Gday Dave - yep mate I think they do - at least the 2 strokes. I think that the 4 stroke outboards run an alternator usually. Its an advantage of inboards that they can run whatever size alternator they want and it makes for very quick charging.
Cheers
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