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(ET) charger



I finally got my e-12 in working order and just mowed about an acre of hilly, very bumpy ground.  It did great, really a tough machine.  I have noticed that the charger really sucks the juice, about a 1000 watts when charging.  This seems great if you just want a quick charge and get back to mowing, but must be very hard on the batteries and is too much of a load for my solar system. . . I can do it, but would bring down my available solar power 20% for just one hour of charging.  Spread over time the load is not to big for my solar.  I think a DC to DC converter putting out 200 or 300 watts would charge more efficiently and put less strain on my solar system.  Also, my charging switch-dial has letters from a to G on it, but I have not noticed a difference in amperage depending on where the dial is set.  Is this dial strictly a timer.  What is the preferred method of charging using the onboard charger.  Short spurts over time, one big long charge.  Basically looking for the low down on charging technique.
 
Jeremy