Ez go rxv won’t turn on and won’t read charger, no head lights turn on

the_leonards  you did not tell us if you checked the batteries with a tester to see if they do have to proper voltage If they do but your cart shows no sign of life you can try and test the power going to the motor controller. Check for blown fuses on your cable to the solenoid etc. EZ Go has a real fancy diagnostics tool so you can also consider having it scanned. I’d check on the solenoid an the motor controller to see if you get power to that. Also, do not forget to check your key switch.