Posted by jd dave on September 27, 2020 at 17:10:34 from (69.121.251.184):
In Reply to: Parasitic draw posted by 550Doug on September 27, 2020 at 14:11:12:
The two things you need to learn is the use of a multimeter both for voltage and amperage checking. As has been said here a tired battery may take a charge, reading 13.5 to 14.0 volts or so with the engine running but will not "hold" a full charge afterward, about 12.6 volts that is normal at rest. Test for parasitic draw using the amps setting across the two terminals of the fuse holder with the fuse removed. Every circuit is suspect if the problem persists after load testing the battery and proving a positive charge situation. New vehicles, tractors, - everything will draw current for the computer in surprisingly higher amounts over time such that if the machine has not been run in 30-60 days or so it will result in a low battery.
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