This video shows the hot models of li-ion cells and batteries produced by Yichun Topwell Power Co., Ltd. The hot models are 18650 2000mAh 3.7V, 18650 2600mAh 3.7V, 21700 5000mAh 3.7V, 26650 5000mAh 3.7V. These are our advantageous products with CE ROHS UN38.3 etc certified, and our factory is strictly controlled under ISO9001 quality management system.