Shenzhen UnitPackPower Technology Co., Ltd is a professional electric bicycle battery manufacturer. Our main products are bottle electric bicycle battery, frog electric bicycle battery, rear rack electric bicycle battery, silver fish electric bicycle battery, etc. aLL quality A-grade lithium ion battery cells we used for battery packs are from Samsung/LG/Panasonic/Sanyo，etc. We are going to have office in USA and germany to support the business of customers from Europe and North America. Welcome to send us inquiry.