Battery: 18650Li-ion Input: : 5V -1A Output: 5V-1A Conversion rate: 80% Life circle: 500Times Working temperature: 10º C-60º C Full charge time: 3-4Hourse: 3-4Hourse: 3-4Hours Dimensions: (LxWxH) 91mmx21mm Net weight: 72g Material: Alloy Packaging&Acces: Optionalionalional *5000mAh--8000mAh power bank * CE FCC RoSH MSDS Approved * OEM logo branding *Sample's fee can be refund after mash order *12months warranty *T/T, Western Union, etc. *Delivery can be Express UPS, FedEx, Air Freight cargo, Sea shipment. Feedback If there is any problem, just contact us freely, we will do our best to provide the best Service! Your Satisfaction is very important in our business success. Thanks for the chance to grow and develop with you!