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FYI
I sent an email to (EV Parts), the company that installed the Alltrax unit in a tractor that I recently purchased, to ask about the proper method of charging, see message sent to group earlier in week.
The company replied with the following:
The Alltrax controller you have in there is designed for an operating voltage range of 24-48 volts. The onboard charger on the tractor charges at 40 volts to be above the 36V nominal battery level, and the battery pack only draws about 15A when they're low and charging, so the controller should be OK. As a precaution, though, I recommend leaving the main manual contactor (switch) off when charging. Alltrax is primarily concerned about 48V systems where the charge voltage may be 54V or so.
I interpret this to be turning the key switch off and the disconnect engaged when charging the batteries.
Bob
Bob Kleinbrahm Senior Network Engineer First Republic Bank San Francisco, CA. 94111 415 288-1478
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