Portable power for op-1

Hello op-1 people. Two days ago i got me a waka waka power, it was on my to get list for a long time, so when i had the change to get it for 50€ (the first gen)
I did it, Because iTS not only a portable light aka solar lamp. Its also a USB charger with a 2200ma battery, so when iTS fully loaded. Ill test if its suitable for the op-1, i really hope So. Perfect for holidays off the grid. With electronic music

Hmm double post. Sorry mods.