Dead Battery Issues

[SUPERTUNE]

Sounds like you checked out any shorts with the bilge pump, that was my first choice to look at.
I would now say you most likely have a bad voltage regulator/rectifier.
When they do go bad, one of the symptoms is a slow battery drain killing off the voltage through a bad Zener diode in the unit, (regulators have several in them) this in turn will cause a back flow of positive voltage to ground shorting the battery slowly over time when sitting idle and not using ski.

 

[Mouthfulloflake]

Hey Korn,

just for what its worth, ive never seen an increase in voltage on a cheap meter when running or revving the ski either, and my skis are charging.

dont condemn the charging system soley on the fact that you dont "see" it on a meter when running...

The bilge is not the problem. I hooked it up with and without the bilge and both are drawing .000002 amps. It is not enough to kill a battery, however, the battery doesn't gain sheeot when I start the motor. It stays exactly the same, even if I rev it....

Basically something is wrong with the charging system. The guy I bought the flywheel off off said it might not charge, but I am checking some other stuff first.

Frank, I WILL be riding tomorrow. I am charging my battery right now, it is ready to rip!
Vogi, bring that spare just in case!

 

[djkorn1]

I am running a few more tests this morning.

 

[ger87410]

U have a volt meter.

Check your stator.

 

[djkorn1]

Hooked up the meter to the regulator/rectifier/ stator. With the ski running it read 2.5 out of 200 amps. When I goosed the throttle it jumped to 5.4

Not enough to charge at all...it does sound like regulator/rectifier.

 

[Matt_E]

What makes you think that's not enough to charge it???
Do you have any idea what voltage that stator puts out?

 

[ger87410]

Am I reading your post right?

The batteries charging at 5 amps?

That's plenty. 2A is a slow charge.

 

[Kennay]

He probably meant volts.

 

[spence]

Same thing is wrong with my superjet. I am taking it into the shop sunday for him to look at it monday

 

[ger87410]

He probably meant volts.

Let's hope not.

 

[Matt_E]

If he did, I bet he had it on DC Volts.

 

[Scorn800]

So, did you find the problem?

 

[spence]

I didnt its in the shop now unless your talking to korn

 

[djkorn1]

Well, today I decided to rip my hood off and look into this problem some more. (Too busy riding waves the last couple days). I looked at the plug on the stator/flywheel cover and noticed some rust coming out of it...Next I try to turn it and it had vibrated loose (I could hand turn it). I ripped off the flywheel cover and no water, but moisture did get in and there was a super thin layer of rust and corrosion over everything (especially the stator).

Cleaned everything up with carb cleaner and wd40 and put it all back together, I am hoping that was the problem.

I'll keep ya posted.