Ford Mustang Forums : Mustang Forum - View Single Post - Battery Draining But Parasitic Draw and Alternator Test OK
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post #22 of Old 04-21-2019, 11:56 AM
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my motorcraft 95 rc, reserve capacity rating

95/2.4 = ~40 amp hours

therefore 0.027amp draw is 40/0.027= 1481 hours at that current draw or 61 days

I think your measured parasitic draw is too low to be a problem, battery or charging system is where i would be looking

if you have a DC clamp meter you could compare alt current production and compare it to your system draw, and see if you are at a deficit

I have a 130amp alt, and it can only put a max of, from memory, 65-70amps at idle when i measured

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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