Posted by riverbend on June 16, 2010 at 16:15:29 from (70.101.159.133):
The story (questions come later): I went to use my H yesterday and the battery was dead (4.5V). The tractor had been standing for a week.
This tractor has a 6V generator, voltage regulator system. After charging the battery all the cells were 1.225 - 1.250 s.g., 6.3 volts.
After running it all day today the battery is at 6.4V. The ammeter usually showed about +5 amps.
Trying to find the problem I disconnected the negative battery cable and measured the voltage between the neg. battery terminal and the cable. It was 2.8-3.0V. I was kind of hoping for zero.
Disconnected everything from the ammeter and still had 0.7V. Replaced the wire between the ammeter and the VR (and reconnected all the wires to the ammeter)and the reading dropped to 1.7V. Current measures 0.4 microamps (I'm not sure this meter is that good).
So to the questions: 1) Shouldn't the voltage between the neg. terminal and the cable be zero with the ignition and lights off ? 2) What do you think is causing the draw ?
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