Shenzhen YUYO Energy Tech Co., Ltd is a high tech manufacturer, focused on the design, manufacturing and sales of lithium-ion battery packs. We started with smart phone batteries and are branching into solar road lamp batteries, power tool batteries, robotic batteries and power storage batteries. Most of our products are exported to North America and other countries. All our products are designed and assembled with great attention to quality and safety. Our products are produced automatically at major steps to avoid man-made errors; therefore, we can provide the best products to our valued customers. To ensure ultimate safety, all our cells are from the best known brands, like LG, Panasonic, Sony, SAMSUNG and also some China brands, like Sino Watt. All our PCBAs are also 100% checked before production.With all these progresses, we are supplying products to well-known brands in the US and China.Our production is based on ISO9001:2015 and SGS SA8000 social accountability since the very beginning and we are also improving ourselves rapidly. Our products have passed these certifications, like, UL, IEC62133, CE, UN38.3 and CB. Furthermore, all our products are insured by HUATAI INSURANCE GROUP in case of accidents. So far, there is none claim that has ever been filed against our products since our initiation. You can rely on our products and services.