The RAVPower 10000mAh power bank is small enough to be carried around, but big enough to charge an iPhone 7 up to 2.1 times, a Galaxy S8 up to 2.0 times and an iPad 4 mini about 1.2 times. When faced with the dilemma, that two of your electronic gadgets are powered off; or your smartphone and your friends smartphone are in need of recharging at the same time, you will not need to take turns with the power.
The ismart 2.0 ports of the RAVPower portable charger can sense which device needs more power and therefore can simultaneously charge two devices smartly with a total DC 5V/3.4A output (each port 2.4A max). Under most circumstances, we hold a cellphone and a power bank in the same hand while the cellphone is being charged. Thus the RAVPower battery pack is designed with rounded corners to offer an outstanding and secure feel in the palm of your hand.