Depends on what else you have hooked up.

Posted By: Tim C, F31
Date: 2/11/02 12:36p.m.

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In Response To: How to connect outboard alternator to charge battery... (Doug C.)

If all you have is a VHF, lights and a wet cell then you probably dont need one. I have a Yamaha 9.9 4 stroke which generates 10A. It was hooked directly into my single G27 wet cell battery and it worked fine, however the voltage would rise to 17.5v when the battery was fully charged and I wasnt running anything. This was fine for my speed and depth instruments, lights, GPS and VHF, however the stereo I had did not like it and would shut itself down and my ST4000+ autopilot would go haywire/burn out. Then I replaced the G27 wet cell with a G31 gel cell and installed a regulator because 17v is too high for a gel cell battery and they are too expensive to allow them to get wrecked. That cured my autopilot and stereo problems too. Many other F31 owners with the same engine had the same problems and the same fix solved their problems. Tim

Messages In This Thread

How to connect outboard alternator to charge battery... -- Doug C. -- 2/11/02 8:26a.m.

I don't think you will need to add a regulator -- Roger, Potter 19, Seattle -- 2/11/02 9:05a.m.

Regulated? Maybe yes, maybe no -- Don,Lancer25, Rkfd,Il -- 2/11/02 9:34a.m.

It is a 1983 model -- Doug C. -- 2/11/02 9:49a.m.

Re: It is a 1983 model -- Don,Lancer25, Rkfd,Il -- 2/11/02 10:50a.m.

We had a similar setup on our 15hp. We didn't use a regulator. -- Jeff G. Indiana, US Yacht 21 -- 2/11/02 10:29a.m.

Depends on the engine.. -- Tim C, F31 -- 2/11/02 4:30p.m.

It is a stator sytem which is only completed -- Stephan L -- 2/11/02 11:29a.m.

Re: It is a stator sytem which is only completed -- Russ -- 2/11/02 7:42p.m.

Thanks all, I think I have enough info to be dangerous now.. -- Doug C., Windrose 24, Chandler, AZ. -- 2/12/02 8:16a.m.

 Depends on what else you have hooked up.  -- Tim C, F31 -- 2/11/02 12:36p.m.

But .... But ... But -- Roger, Potter 19, Seattle -- 2/11/02 1:40p.m.

Re: But .... But ... But -- Tim C, F31 -- 2/11/02 4:26p.m.

Mine had thispic) -- Roger, Potter 19, Seattle -- 2/12/02 9:24a.m.

Re: Mine had this: -- Tim C, F31 -- 2/12/02 10:51a.m.

Voltage is a concern as a present I am running a Chairman group 24 gel cell -- Doug C. -- 2/11/02 1:41p.m.

Re: How to connect outboard alternator to charge battery... -- Peter -- 2/11/02 5:52p.m.

WOW, what a can of worms -- Russ -- 2/11/02 7:37p.m.

Say Russ, Can you explain the charging systems... -- Dougcan, YS24, "Tinker" Lk WA & Puget Sound -- 2/11/02 7:56p.m.

Re: Say Russ, Can you explain the charging systems... -- Russ -- 2/12/02 5:49a.m.

Re: How to connect outboard alternator to charge battery... -- Klaus, N.I.S. 26, Perth, Australia -- 2/11/02 9:29p.m.

I'll hook it up tonight. Keep the fire extinguishers handy. -- Doug C., Windrose 24, Chandler, AZ. -- 2/12/02 8:21a.m.