I recently bought my son and electric razor scooter E100 at a garage sale for $10. I figured at that price that I would probably have to fix something. Well I was right. The battery's were fully charged but, it would not run so I did some google searches on what the problem might be. The problem could be one of three problems. The motor, the battery's or the relay switch. With mine it was the relay switch. I found out that the battery's are 24v but, the charger output is 48v which can ruin the battery's or fry the relay switch. I checked everything with a volttage tester and found out that the relay switch on mine was fryed. So I could buy a new relay for $25 but, after a few uses it would probably fry the relay again and could even ruin the battery's. S I decided to go a different direction because I did not want to put more money into something that was not going to last.
My son really wanted a scooter and he did not care if it was electric or not so I decided to make the electric scooter into a regular scooter. I started by taking everything that made it electric off. I did keep the brakes. I then decided to remove all the extra metal that was under the scooter that was no longer needed such as the bars that held the battery's and relay, the kick stand and kick stand mount and the motor mount. I then smoothed the metal sprayed it with primer and then red paint. I now have a regular scooter that initially cost $10 and looks cool.
It took me about 2 hours to do everything and my son loves it. The plus side of this is that I can sell the woking battery's, motor, swithches and throtle for about $30 to $40. Which means I made my son happy which is the most important part and I will make some money instead of spending more which makes me happy and everything gets recycled which makes the environment happy.