The merely 5.6-mm-thick portable power bank iM01 has a built-in rechargeable battery with a capacity of 3,000 mAh. In order to arrive at this slim shape, the designers dispensed with the standard USB A port. Instead, the power bank includes a connector socket for a Lightning and a micro USB port, both of them able to support input and output at the same time. To make sensible use of all charging options, a special micro USB adapter cable for charging Android devices and iPhones is included.