feature | 10050mAH lithium-ion batteryUp to 72 hours extra of talk or surf time (hours of time and number of charges are estimated by comparing the iPhone 7 internal batteries specification on apple to the internal batteries of Duracell Powerbank; Results will vary by device and conditions)Dual charge technology for simultaneous charge of the power bank and a phone or other USB-powered deviceUp to 5 charges for iPhone 7 (hours of time and number of charges are estimated by comparing the iPhone 7 internal |