Gen charging but battery still going dead??

russmcbrien · 07-10-2017, 09:50 PM

Cant figure it out? My battery slowly dies while driving. 1990 Marathon, 3pg 2-stroke. Jacked up and free wheeling starter/generator is putting 15-16 volts to the battery. It can sit with no discharge but while driving will drain to the point of cant turn over in about 2-3 hours. I changed the voltage regulator when it started (about a year ago haha) but no help.
I am probably grasping at straws but when I come to a stop sometimes it feels like the starter is still turning while the motor is running but I don't know how to check that (or if it is even possible) and cant find any threads that describe the same issue??
Any Help would be MUCH appreciated! Thx Russ

cart around · 07-11-2017, 07:30 AM

It had better be still turning. Your starter is your generator too.

I think it's time to change the battery. Take it to a parts store, and have them load test it.

Spicyunicorn · 07-11-2017, 07:33 AM

Well 16 is to high could be cooking your battery you want to be around the 14.5 range

russmcbrien · 07-12-2017, 02:10 PM

Battery is +/- 18 months old but will check it out and try the spare voltage regulator I have to see if I get a better charge range. Thx
Any other suggestions, please bring em on.

davidwjacob · 08-09-2017, 09:48 AM

Quote:

Originally Posted by russmcbrien

Battery is +/- 18 months old but will check it out and try the spare voltage regulator I have to see if I get a better charge range. Thx
Any other suggestions, please bring em on.

How did you make out with all this?

thanks
Dave

07-10-2017, 09:50 PM	#1
russmcbrien Not Yet Wild Join Date: Jul 2016 Posts: 4	Gen charging but battery still going dead?? Cant figure it out? My battery slowly dies while driving. 1990 Marathon, 3pg 2-stroke. Jacked up and free wheeling starter/generator is putting 15-16 volts to the battery. It can sit with no discharge but while driving will drain to the point of cant turn over in about 2-3 hours. I changed the voltage regulator when it started (about a year ago haha) but no help. I am probably grasping at straws but when I come to a stop sometimes it feels like the starter is still turning while the motor is running but I don't know how to check that (or if it is even possible) and cant find any threads that describe the same issue?? Any Help would be MUCH appreciated! Thx Russ
russmcbrien Not Yet Wild Join Date: Jul 2016 Posts: 4

07-11-2017, 07:30 AM	#2
cart around Test before replacing Join Date: Aug 2013 Location: Ohio side of the Pennsylvania border. Posts: 3,495	Re: Gen charging but battery still going dead?? It had better be still turning. Your starter is your generator too. I think it's time to change the battery. Take it to a parts store, and have them load test it.

07-11-2017, 07:33 AM	#3
Spicyunicorn Gone Wild Join Date: Jun 2015 Location: NW Iowa Posts: 1,669	Re: Gen charging but battery still going dead?? Well 16 is to high could be cooking your battery you want to be around the 14.5 range

07-12-2017, 02:10 PM	#4
russmcbrien Not Yet Wild Join Date: Jul 2016 Posts: 4	Re: Gen charging but battery still going dead?? Battery is +/- 18 months old but will check it out and try the spare voltage regulator I have to see if I get a better charge range. Thx Any other suggestions, please bring em on.
russmcbrien Not Yet Wild Join Date: Jul 2016 Posts: 4

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