A fully charged 10,000mAh power bank should charge an iPhone 2 3 times from zero to full charge, before needing to be recharged itself. It should charge most modern Android phones 1.5 2 times from zero to full charge. This 20W power bank can charge your phone faster than a standard 10W power bank. The rugged design makes it a good option for outdoor as well as everyday use. Recharging the power bank via the Type C cable provided will give it a nice, fast charge, while the solar charging is quite slow, and simply functions as a back-up option when you dont have power available to charge the power bank, or if youd like to leave it charging with exposure to sunlight for a period of time. 15 ( l ) x 7.5 ( w ) x 1.8 ( h ) cm ABS, rubber & solar panel lithium polymer battery capacity: 10,000mAh 2 x USB A & 1 x type C port type C input: 20W (max): 5V/2A, 5V/3A, 9V/2.22A, 12V/1.67A USB A outputs: 18W (max): 5V/2A, 5V/3A, 9V/2A, 12V/1.5A type C output: 20W (max): 5V/2A, 5V/3A, 9V/2.22A, 12V/1.67A LED indicator LED light function includes fast charging type C charging cable packaged in a Swiss Cougar gift box