Good lithium batteries and a good charger...and much more power! I'm helping a friend from work overvolt a little electric quad toy he found...because he thinks it's too slow and will burn out...hehe...It's basically a stripped electric
But more voltage + good lithium batteries and...maybe an updated controller? A real EV controller if you need to...because that'd rock, even though that adds to the cost...and I want one of those scooters...lol! Good luck, keep me posted!