A Club Car voltage reducer is exactly as it sounds. It takes the total voltage of your golf carts batteries and reduces it down to 12 volts for installation of popular accessories.
Also in this category is a Club Car voltage regulator which does exactly that. It regualtes the output of voltage from your starter generator. A faulty regualtor will keep your battery from accepting a charge.
These parts fit Club Car DS, Precedent, XRT, and Carryall golf cart models.