Finally ascended from my 4000 km Ninebot ES2. Girlfriend liked it so much I had to get one for her as well. She never really felt safe on the ES2. : r/ElectricScooters
Mods to Make Your Ninebot ES/MAX Scooter Faster! Unlock Its Full Potential - YouTube
Ninebot ES2 Downgrade from 1.5.1 - How to flash 1.3.9 Custom Firmware (ITA) - YouTube
How to overclock your Ninebot ES2 ES4 scooter with a custom firmware - #ES2 #speedhack - YouTube