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Old 01-18-2021, 10:54 AM   #7
Sergio
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Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
Default Re: 36v solenoid w/ 12v coil

Are you trying to use these solenoids to reconfigure 3x12v in series to parallel for charging?

If so that is a real bad idea, without some kind of controller to properly sequence and verify each step, a single failed solenoid could short the batteries or back feed high voltage into your vehicle 12v.

Perhaps a "step-up" charger (like a solar charger controller) to go from 12v to 36v may be a better option for charging.
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