If the car has the original LED battery indicator, chances are good, its bad. If that is how you are judging the battery voltage, then you really cant go by that. Also, if the charger is shutting off and showing a green light, that too could show, that the gauge is bad. Using the cart, and then testing the batteries is a good why to test them and get an accurate reading on battery voltage, however on a par car, the suggestion to leave the lights on, is not a good idea, as on a par car, they run there lights on 2 batteries.
Id be surprised also that after a 7 mile usage, the charger shuts off after an hour.
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