I HAVE A PRIDE victory scooter. It doesnt seem to have the power it used to have. I have installed new batteries and throttle pot. I put it up against a wall and hooked the motor direct to the batteries and it smoked the tires. I sent the controller to a person who rebuilds them and he said there was nothing wrong with it. I use the scooter on hills and through high grass and over some pretty rough terrain. In using it it seems as though the voltmeter on the dash dips way down under the least bit of load put on it. The breaker trips under the slightest load. On level hard surface it will run several hrs. I have 2 new 50 amp batteries installed.