.Voltage of single cell: 3.7V .Nominal voltage after battery pack combination: 7.4V .Capacity of single battery: 2.2ah .Battery combination mode: 2 strings 1 parallel .Voltage range of battery after combination:5.0~8.4V .Battery capacity after combination: 2.2ah .Battery pack power: 16.28w .Battery pack size: 20* 39 * 67mm .Maximum discharge current: < 2.2A . Instantaneous discharge current: 4.4A~6.6A .Maximum charging current: 0.2-0.5c .Charging and discharging times: ＞ 500 timesProduct Features;Prompt Delivery;Quality Approvals;Reputation;Service;Small Orders Accepted;Origin;Distributorships Offered;Experienced Staff;Product Performance;Green Product;Guarantee/Warranty;International Approvals;Military Specifications;Packaging;Price1. Technology-With more than 20 years of battery manufacturing and automatic production line, xuanli can guarantee our products better products. 2. R&D-Experienced R&D team with over 20 engineers for supporting ODM requirements 3. Safety-Various tests are done at XUANLI to ensure the safety of our products for our customers. 4. Certificates-ISO、UL,CB,KC certificated. 5. Service-XUANLI has a professional sales team to provide professional project solutions and after-sale services.First from raw materials drying- mixing- coating -electrode drying- calendaring -cutting- punching- stacking- tab welding- short circuit checking- pre packing -electrolyte injection -pre formation- degassing gas -bag cutting -folding- code printing- formation -aging- finished products