Q: Can the PowerPack 10K charge a MacBook Air?
A: For 2017 and earlier MacBook Air models: No, it does not. These older models use MagSafe or MagSafe 2 charging ports, making them incompatible with the PowerPack 10K which charges with a USB-A output port.
For the recently launched 2018 MacBook Air, you might be able to get this battery pack to charge it with the right type of charging cord, but only at a very slow rate. Specifically, you'll need a charging cord with a USB-C tip on the one end and a regular-sized USB (also known as USB-A) on the other end. (We sell this type of cord separately: https://www.amazon.com/dp/B075M647JY)
There is one caveat: The 2018 MacBook Air requires much more power to run and charge its built-in battery than what this compact battery pack can provide. The result can probably be characterized as barely charging. However, in a pinch when your laptop is completely out of juice and a wall outlet is not accessible, you could get a small amount of charge back into the laptop with this battery pack.
If you're looking for a better battery pack option for the 2018 MacBook Air, take a look at the PowerPack 20000 instead.