Amazon.com : Segway Ninebot Battery Charger for ES2/ES4/E22/ES1L Electric Kick Scooter, 42V 1.7A Power Supply Cord, Multiple Security Protection, UL& CE Certified , Black : Sports & Outdoors
Amazon.co.jp: Ninebot by Segway KickScooter ES2 ES21 Special Battery Expansion for Ninebot by Segway KickScooter ES1 ES2 ExternalBattery Optional Parts, PSE Certified. : Toys & Games