Went to put my 2011 48 volt EZGO golf cart on the charger and batteries won’t take a charge. The indicator light won’t even come on to act like the charger is working. Batteries are completely dead at this point, or there is a different issue. Lights won’t even come on. New to carts, not sure where to start. Batteries were fine all year, held a charge and cart lasted through the weekend on a full charge.