HPEVS Lithium Battery DC-DC Schematic

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We Are Now Offering An AC Motor Controller Upgrade For The E-Z-GO RXV Golf Cars.
Our "Original" AC Drive System For Golf Cars Just Got A Whole Lot Better With The Introduction of an Automatic Parking Brake!!

HPEVS Golf Car Drive Systems

The "ORIGINAL", and still the best AC drive system available for your golf car!

Now Our Golf Car Drive Systems Come With
a 5 Year Warranty!!
We have Designed and Developed A Lithium-Ion Battery Kit For Golf Cars That Is Completely Integrated With The HPEVS Golf Car AC Drive Systems

Mining Vehicle Systems

Specialty motors designed and built for your specific applications!

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We have a drive system to fulfill your utility vehicle requirements!

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Diagnostic and Troubleshooting Documentation.

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We have added to our website dimensional drawings of the Curtis Instruments controllers.

These drawings can be helpful during the design phase of a project.

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Hosts Mike Brewer and Edd China From The TV Show Wheeler Dealers Teamed Up with EV West to Install a HPEVS Drive System Into a 1985 Maserati Bi Turbo

It is Amazing To Us To See What Can Be Done With Our Drive Systems! Here Is Yet Another Example!

The Folks at EV West Have Created a Vehicle with One of Our Drive Systems!

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HPEVS Lithium Battery Golf Car DC-DC Schematic

We have found that a DC-DC (Voltage Reducer) that is installed on a golf car can draw down power from our lithium battery pack. Even with the golf car turned off, we have found that the DC-DC does not fully shut off and can draw up power from the battery. Over time, if the car is not plugged in for charging when not in use, the DC-DC can completely kill a battery.

To circumvent this issue, we have installed a contactor on our lithium battery packs that helps protect the battery. If a DC-DC (Voltage Reducer) is installed on the car for which our lithium battery packs is being installed, the 48 volt input wire needs to be connected to this contactor. In doing so, the DC-DC is totally isolated from our battery pack and will not draw battery power.

If a golf car that has one of our lithium battery units installed is depleted of power, and it is discovered that the vehicle has a DC-DC unit installed without the 48 volt input wire connected to the onboard contactor on the battery, the battery warranty can be voided.

Below is a link to the schematic that shows where to connect the 48 volt input wire from the DC-DC.

(Voltage Reducer Schematic)

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