The Xtreme 26,800 PD Portable Charger from RAVPower is a lightweight and portable battery pack that allows you to charge multiple devices at once using its one 30W USB Type-C port and two iSmart 2.4A USB Type-A ports. When the two USB Type-A ports are used simultaneously, they provide a maximum charge of 3.4A. With a capacity of 26,800mAh, you'll be able to recharge an iPhone 6S up to 10 times, a Samsung S6 up to 6 times, or an iPad Air up to 2 times. As its USB Type-C port has an output of up to 30W, it provides enough power to recharge a MacBook, meaning you won't have to worry about carrying its charger around. When this battery pack is completely drained, it can be recharged in 4-5 hours using its USB Type-C port and a separately sold USB Type-C charger, or you can opt to use the micro-USB input. When paired with a 2.0A charger, the micro-USB input will recharge the battery in 13-14 hours, as compared to 26-28 hours when paired with a 1.0A charger.