RAVPower exclusive intelligent controlling IC and iSmart charging technology combine to deliver a blazing fast charge to your devices. RAVPower Portable charger with 18W PD 3. 0 USB-C port, 18W QC 3. 0 USB-A port and 12W iSmart USB-A port for simultaneous charging to three devices with a combined output of 30W. RAVPower PB231 Power Bank is one of the smallest 15000mAh power banks on the market, fits in your hand or pocket with power to keep you Going for days. Unlike vague blinking lights, this unique portable charger features an excellent LED indicator to show the exact percentage of power left.