If you are a golf player who needs to know how to use 3 12v batteries in a golf cart then this article will give you all the details with related questions and answers on this matter. When you are riding the golf cart or are in the maintenance of it, you need to be assured that the power is going to last you a good while till your operations are over. But if you have a different voltage of battery available than what is needed, can you still run the cart?