HUZHOU CHENGERXING ENERGY TECH CO.,LTD is originated from Zhejiang Nuociss New Energy Technology founded in 2006,Website:http://www.electricbikesbattery.com,we have 9 years experience in design and manufacturing lithium battery.Company is certified by ISO 9001:2008, battery cells are approved by CE,UN, and ROHS. Our products are in the field of E-bike battery,electric bicycle battery,Electric scooter battery,Electric golf trolley battery and LED light battery. All the batteries are carefully approved by our battery experts.Our mission is to produce most safe, reliable, cost effective and high quality li-ion battery for our customers,offer the best warranty service.