A friend said her little JD lawn tractor battery kept dying and it
wouldn't start. I went by and put the charger on it for a few minutes
at 30A and got it to start up on about half a spin. I measured the
voltage with it running and it was at 11V but I had neglected to measure
the battery before I put the charger on it so I don't know what it was.
She mowed the yard and then tried to start it again after finishing and
it wouldn't do anything so the battery was completely drained. I will
probably try to charge the battery up fully on a low charge rate my
newer charger will do and see if it will come up to a full charge. She
did say she had used some sort of little charger and kept it plugged in,
but at some point got a divorce and it might have walked off with the
ex, in any case she didn't still have it. Having had to use that
suggests either there was some sort of current draw at rest, or that the
alternator isn't alternating. The ex had disconnected the front lights
to make sure they didn't draw it down and there was some other connector
that was not, I didn't try to track that down.
I was also looking at the parts diagram and it shows a little alternator
on the engine somewhere and a voltage regulator. I don't have a tester
to see if it is actually putting out voltage/current other than a VOM
which showed the 11V. Maybe I should charge the battery then see what
it is while running on a full battery.
https://partscatalog.deere.com/jdrc/sidebyside/equipment/67736/referrer/navigation/pgId/489092846
I'm thinking it might be either the alternator or the VR if the battery
is OK but she doesn't have a lot of money to start throwing at parts.
The VR is $18 on ebay so maybe worth getting one of those and trying it?
The alternator is like $100 so don't want to do that for now.
Thoughts?
--
--FT
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