(ET) Dead E-15

[Pete Lukken <petelukken taconic net>]

Hi all,

I have an E-15, 26AE15BA, that has worked wonderfully well until last 
week.  After having mowed the lawn I drove it into the garage and put 
the charger on.  Trying to move it the next day: no meters, no lift, no 
anything.  I checked both sides of the disconnect and can measure 
battery pack voltage to battery negative and...also to the chassis. No 
cables appear to be "grounded" to the chassis.
Is there an obvious problem here, like a charger failure (which still 
seems to work fine) since that was the last part of the tractor that was 
operating before "failure". I do have schematics but my troubleshooting 
techniques are pretty poor.

Thx in advance for your tips/techniques/hints/guesses.

Peter