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Jimg

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Reply with quote  #1 
I bought a used EV with a 7 inch AMD motor and a 1204-022 Curtis controller. After replacing the batteries (24V) the vehicle has no power.  It will not go up any hills. I checked the throttle, its 0-5K.  With the wheels on the ground and blocked, I'm getting 5v DC to the motor.  With the wheels off the ground I get 9 v  DC at the motor.  Does that sound like a controller problem ?    It does not have a Molex jack on the controller.  Thanks
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ampman

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Reply with quote  #2 
What sort of EV is it? Is it a mobility scooter or something like that because I cant think of any EVs that run at only 24volts

What amphr are the batteries?
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