Charging issue club car 48v

TWIN CLUB CAR

I have a 48v club car 1996.I have tested every thing not sure what problem is.I have 8v on grey wire to charger relay.I have 48v total on battery bank.I have 120 to charger.does the grey from obc computer supposed to have higher voltage or should 8v kick on relay?thanks for help

BGW

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SteveRand

Hi Twin, and welcome to BGW! Hopefully, your Club Car will be buzzing zlong in no time!

In the stickies at the top of this section, there is a manual for the Powerdrive chargers that has all the info you'll need. There is also a wiring diagram for your cart in another sticky. Be sure to check them out.

If everything is wired correctly and functioning properly, the gray wire with the fuse should ground the charger relay to negative battery voltage a few seconds after the charger is attached. You should have battery voltage at the red wire. Are the fuses OK? (There's also one behind the charger recepticle)

Only when the OBC confirms that everything is OK it will ground the gray lead.

Can you check your charger on another cart? Or another charger on yours?

TWIN CLUB CAR

I do have 48.1 at red wire but I have a positive 8v on grey,it turns to blue inside charger.I do not have access to another cart nor to another charger.I have 8v at blue going into charger relay and 48.1 volt on red wire beside blue at charger relay

SteveRand

Are you getting the 8 volts on the gray wire all the time, or only when the charger is attached?

When the charger is attached to the cart, the OBC senses this through the gray wire. If the battery voltage is high enough - and yours is - and everything checks out, it grounds the gray wire, completing the relay coil circuit, thus energizing the charger.

So, the gray wire should go to ground a few seconds after the charger is attached. If not, your OBC might be malfunctioning. There is a test for this in the charger manual, which hopefully you were able to download from the sticky.

There is also a diode in the wire between the 2 relay coil terminals in the charger. How does it test? It should have high resistance in one direction, and low in the other.

You can also bypass the charger relay to try charging the batteries. It's all in the manual.