Moving right along. I've used a lot of RavPower usb power banks. When I used to go out to the field a lot or traveled overseas, these things were super handy. Some of them have ridiculous capacities. I setup a hotspot for a group of 5 people in London for an entire day with a portable charger and HTC One X back in the day.
The RavPower 2 in 1 offers much less capacity than some of their other products, however the 4800mAh capacity will give you at least 1.5 full charges. This should get most power users through the day.
The QI charger has a little cool factor, but it is really useful. Say you go to lunch and want to put it on the table and charger it while you eat. There you go. Now you can. Plus you can check notifications, e-mails, etc without having any cords. Charge rates are reduced, but even at around half the charge rate vs the OEM cord it does an adequate job.
It can also be used as a replacement for a normal bed side QI charger. Just plug it in and it basically acts like a normal QI charging pad.
There's still a standard USB port present. Output for that is 1 full amp.
Not all of their power banks come with a charger since they have a common MicroUSB input, however this one does.
Most of their products are available on Amazon. This one is $56.99 shipped currently on Amazon.