The Ford Barn

miken7132 · 04-03-2011, 01:29 PM

Have a 6v positive ground system with a generator/cutout (battery less than a year old, new NuRex cutout). Starting with the battery at full charge, after driving about a mile the charge drops to 65% to 70%. Ran the battery, ground, and cutout tests in Les Andrews' Troubleshooting manual - everything passed. Ammeter shows 10 amps when running, 0 with the engine turned off. Appreciate any ideas as to why the battery is losing charge.

Tom Endy · 04-03-2011, 02:16 PM

If the battery will not hold a charge, Possible bad cell in even a new battery. Best to check each cell with a hydrometer.

Tom Endy

Tom Wesenberg · 04-03-2011, 07:50 PM

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10 amps is too much and will cook the water out of the battery. 3 amps is enough, unless you do a lot of starts and short drives. Better yet, install and electronic voltage regulator to control the output.

04-03-2011, 01:29 PM	#1
miken7132 Junior Member Join Date: May 2010 Posts: 15	Charing problem Have a 6v positive ground system with a generator/cutout (battery less than a year old, new NuRex cutout). Starting with the battery at full charge, after driving about a mile the charge drops to 65% to 70%. Ran the battery, ground, and cutout tests in Les Andrews' Troubleshooting manual - everything passed. Ammeter shows 10 amps when running, 0 with the engine turned off. Appreciate any ideas as to why the battery is losing charge.

04-03-2011, 02:16 PM	#2
Tom Endy Senior Member Join Date: May 2010 Location: Southern California Posts: 3,134	Re: Charing problem If the battery will not hold a charge, Possible bad cell in even a new battery. Best to check each cell with a hydrometer. Tom Endy

04-03-2011, 07:50 PM	#3
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Charing problem Sponsored Links (Register now to hide all advertisements) 10 amps is too much and will cook the water out of the battery. 3 amps is enough, unless you do a lot of starts and short drives. Better yet, install and electronic voltage regulator to control the output.