NIU OEM Quick Battery charger unit is compatible with all NIU KQi 1, KQi2 and KQi3 models. andThis is a quick charger for super fast charging. Charges 35% faster than the stock charger. and*NOT compatible with KQi Youth, KQi Youth+, KQi Air, or KQi 300 Series Scooters. andNote: This SKU does not include the input cord. andH0401004 is the US standard input cord for this charger.Specifications:Input: 100-240 VAC andOutput: 53.5 V DC ~ 2.0AUL / FCC certifiedSafety features: Niu OEM chargers are UL and FCC certified and equipped with multiple safety protections, such as overcurrent, overvoltage, and overheat protection, ensuring the safety and reliability of the battery charging process. andCheck "Shop-by-Diagram" to verify part location and see more parts available for your KQi scooter.About NIU: andNIU Technologies (NASDAQ: NIU), founded in 2014, is the world’s leading provider of smart urban mobility solutions that embrace technology, style and freedom. andNIU is committed to continuously providing global customers with more convenient and environmentally friendly smart urban mobility vehicles to make life better. Make life electric with NIU.