Power banks are often meant to power tiny gadgets that consume minimal power – laptops, on the other hand, consume a lot. The one you're looking at lists similar devices, but it won't work with a laptop since it's meant to link into a USB port, and a laptop is unlikely to be able to operate from there. To have extra laptop power capacity, simply purchase a backup suitable laptop battery and keep it charged at all times. To learn more about this stuff, please follow me on my website - www.vickytechy.com