HUZHOU CHENGERXING ENERGY TECH CO.,LTD is originated from Zhejiang Nuociss New Energy Technology founded in 2006,we have 9 years experience in designing 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 the most safety, reliable, cost effective and high quality li-ion batteries for our customers, offer the best warranty service. Why choose us? 9 years experience in lithium battery. Professional engineers and workers. The most competitive price. Best battery warranty terms in China.