. Swappable batteries are hassle-free for charging, as you could charge a battery separately through the scooter. The product is rather flexible and may cope with a all over the world voltage of 100-240VAC 50/60Hz. It’s also suitable with many other versions, including the E10 and E8 Zing products. https://www.electricscooter.ltd/k11-trottinette-electrique-100-km-h/