Mophie Power Station AC

This Powerbank or portable battery is capable of charging up to three devices at one go. This device is capable of charging anything with a USB cable as well as a laptop which normally comes with an AC cable.

Pros:

• Three ports allows you to charge your laptop, GoPro and Phone simultaneously.
• 22000mAh battery capacity.

Cons

• Rather pricey at about 200 dollars, but you can find one for 100 dollars if you are lucky.
• Mophie is very experienced with Apple products, so if you are using any other product, there's no guarantee your device's quick charge will work the same.

Overall, if you are a heavily reliant on your laptop and mobile devices, then this is definitely for you.