It may not be your Charger, Test Your Golf Cart Batteries First
Spring is here and for many golf cart owners this means that you are having problems getting your electric golf cart up and running. The charger won't work and you are looking for troubleshooting tips to fix your golf cart charger. Before you go out and spend a bunch of money on a new charger, try these quick tips to test out your batteries. Tools that would be helpful include: A Volt Meter, Load Tester, and a regular 12v Car Battery Charger that goes up to at least 10-15 amps.
1.) Test the voltage of your Golf Cart Batteries
First determine whether your Golf cart has 12v, 8v, or 6v batteries.
Sometimes it is hard to tell what size the batteries are if you aren't very familiar with this. If your golf cart only has four, or possibly only three, batteries then the batteries are most likely 12v batteries which makes this process very simple. If it has six batteries, then they are either 8v or 6v batteries. Here is how to tell the difference between six volt and eight volt golf cart batteries.
Golf Cart Chargers require a minimum voltage to turn on. So if you test the voltage of each battery with you digital volt meter and the total voltage is far below the 36 volts or 48 volts that your golf cart is supposed to run on, then the charger would not kick on even if the charger is a good working charger. So to test the batteries simply turn your volt meter to DC Volts and place the Red Lead on the positive of a battery and the Black lead on the Negative of that battery. Record this and repeat for each battery, then add to find your total voltage. Alternatively, you can place the Red lead on your last battery's positive post and the Black lead on the first battery's negative post. This will give you a total battery pack voltage.
If your battery pack is very low (more than ten volts from normal) proceed to the next step. If your battery voltage is good then there may be an issue with your charger or your cart's wiring or OBC. If you are lucky enough to live near Crossville, TN bring it over to us and we'll help you figure out which one it is.
2.) Charge the batteries with a 12v Automotive Charger
If you have 12v batteries this part is really simple. Hook up the automatic car charger to the "+" and "-" terminals of one battery at a time and charge each battery on the 15 or 25 amp setting for about 30 minutes to an hour. If your golf cart has 6v or 8v batteries then you can still use your 12v charger, but you need to do it a little differently to avoid over charging your batteries. To do this you need to hook up the charger to the batteries two at a time. Here's what we mean:
This works the same for a 6v or 8v battery, it just takes a little longer for eight volt batteries.
3.) Once the Batteries are charged up enough, Try out your Golf Cart Charger
For 36v carts once the total battery voltage gets to 28-30 volts go ahead and plug in your golf cart charger; for 48v golf carts wait until the voltage gets closer to 40 volts. At this point it should work fine. If the charger doesn't kick on then you may have a problem with it or your cart. Either way call us if you have any questions and we will do what we can to serve you.