Galaxy Pro scooter will run for approx. 2 miles with 2 new fully charged batteries then the indicator lights go from max of 4 lights quickly down to 1 light and scooter just bairly crawls along with full throttle. got back to house and put up on block to run with no load. Charge indicator lights are now at max of 4 and ran for 8 minutes with back wheel off ground with light still on max of 4. Set back tire on ground and tire immediately stopped and indicator lights went down to 1 light. Checked batteries with a meter before I went out and they were at 25.4 volts and watched them gradually drop as I ran on block. Voltage didn't drop below 23 volts and as soon as I stopped scooter the voltage was back up to 25.
Am I dealing with a defective controller that when it heats up I have a component breakdown?