Battery Help
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Cross-Country
Joined: Dec 2011
Posts: 58
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Battery Help
86 f250 6.9, bought new batt feb 2018, because of a electrical short in the regulater, the batt has been discharged and charged at least 6 times. I can charge the batt to 13v, batt will lose about .5v per day, in 4 days batt will not start truck, what is the procedure to bring batt back to life.
thanks nick c
thanks nick c
i ain't rite
Joined: Mar 2005
Posts: 65,565
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From: Marlboro Mental Hospital.
if the disconnected battery is loosing enough that it is dead after 4 days, i would return it for warranty replacement.
if it dies after 4 days while hooked up to the truck, than there is a problem in the truck.
if it dies after 4 days while hooked up to the truck, than there is a problem in the truck.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
You didn't mention it but where the batteries replaced as a pair? Your battery isn't designed to be discharged completely and the damage is not reversible. You should warranty the battery and fix your charging issue.
Lead Driver
Joined: Apr 2008
Posts: 6,945
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^ As he touched on, the batteries MUST be replaced as a matched pair. Sounds like you need to track down the draw. Usual suspects are voltage regulator and radio.
Logistics Pro
Joined: Jun 2017
Posts: 3,978
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From: Edmond, OK
You can isolate the parasitic load by pulling fuses. Put an amp meter in series with the battery with the key off and you should have 0 A of current draw. If you have mA of current draw with the ignition off pull fuses individually until the current draw drops to 0.
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