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Old 29 November 2014, 13:49   #11
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Originally Posted by 9D280 View Post
Or get a regulator / rectifier off another outboard.

My Merc has a Honda one as I was toasting batteries with monotonous regularity as the Merc one just rectified....
Sure looks like a regulator to me as it has cooling fins. From what I have seen, most rectifiers only are smaller and round with no cooling capabilities as they are not regulating and therefore do not get as hot.
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Old 22 January 2015, 06:16   #12
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FYI: Any outboard with a charging circuit should not be Started unless a battery's connected as no-battery hooked up usually means an immediate short in the regulator.
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Old 11 March 2015, 09:30   #13
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FYI: Any outboard with a charging circuit should not be Started unless a battery's connected as no-battery hooked up usually means an immediate short in the regulator.
Hi all, I am new to this forum and have just purchased a Honda BF15, manual start outboard, my first motor with a charging circuit.

The above comment has confused me, as my motor has a 12v charging circuit option. I have spoken to my dealer and they have said that no battery needs to be connected to run the engine safely, it is an option, however if a battery is connected ,the manual states not to disconnect a fitted battery cable with the engine running. The Honda manual states that the battery is an optional extra not a required item.

So am I right in understanding, that if I wish to connect a battery for accessories such as lights fishfinder etc, I can charge the battery from the dc output on the motor. However if don't have a battery connected then no harm will come to my motor providing I don't have the cables connected ?

I ve also read that Honda use a unique regulator sensor that only switches on the 12v output from the motor when a slight load is detected ? So I guess with no cables connected the output would be inactive ?

Regards,

DAVE.
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Old 11 March 2015, 10:15   #14
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Jellyworm,

I had the BF20, I ran it for 2 years without a battery connected, never missed a beat, I did subsequently attach a battery and used the electric start, all ok.

To stop any short circuits I got a small block of wood, and screwed the Pos and neg terminal leads and screwed each lead seperately into it.
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Old 11 March 2015, 10:27   #15
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Cheers for that, mine is manual start and I'm just considering whether to rig up a battery to the charging circuit for a couple of accessories, fishfinder, radio and gps. I might just use a standalone battery that I charge off boat.
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Old 11 March 2015, 11:12   #16
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That sounds good, you shouldn't get any problems, make sure the battery it in a battery box
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Old 10 April 2015, 02:39   #17
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Trying to understand if you have a charging cirquit you must also already have the battery leads, don't U? If so, hook it up (any 12 volt auto/marine battery) start it electrically w/a dc volt meter connected at the batter..it should read between 13.4-13.8 volts dc when running. I don't see why you would need a regulator at all?
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