If your Maxima isn't running and the battery charger shows the batteries are likely fully charged, then you'll want to check the circuit breaker and fuses. These can be found beneath an access panel that's located on the rear of the scooter between the tail lights. First, remove the key from your scooter.
Then, open that panel and the circuit breaker and fuses will all be immediately visible. You can press the reset button on the circuit breaker to reset. Fuses can also be individually removed and inspected.