How To Test A Battery Charger Transformer. A good sign of battery functionality is how much voltage it has. The easiest way to test a 24 volt transformer at home is with a multimeter a device that measures electric current voltage and resistance over several ranges of value.
Turn the timer on and check for power coming from the timer. Note the display of the amp meter and the attached voltmeter. Make sure you take all necessary safety precautions.
Set the rate of the charger to high and turn the power on.
If possible check the voltage and polarity at the battery posts with a DC voltmeter. Depending on the battery you are likely to overheat the transformer. Your golf carts battery charger should read about 1272 volts when fully charged. The transformer is used to step down voltage know as a step-down transformer.
