Segway Ninebot ES2 with external battery is INSANE Way faster than Xiaomi M365 - YouTube
Segway Ninebot Extended Battery Review (ES1 and ES2) - YouTube
Original Segway Ninebot External Battery for Es1 Es2 Es3 Es4!Include 1 Bracket!l | eBay
Segway Ninebot E45 Electric Kickscooter - Up to 45km in Range – Segway of Ontario
GLDYTIMES Original Control Board Replacement for Segway Ninebot ES1 ES2 ES4 Electric Scooter Mother PCB Controller Assembly Electric Kickscooter Motherboard Kit, 2.0 Upgrade Version, Electric Scooters - Amazon Canada
Ninebot ES Series, E22 Series, E45 Series Second Battery Pack
Here is the only way to finally solve ES2/ES4 external battery connector issues once and for all. : r/ninebot