Here are the 5 different power stations I have tested. The two Anker brand power stations, I suggest for iPad style photo booths with digial sharing only.
The following links have been updated with a larger unit that I have purchased. The YouTube video does not include the latest unit.
So far, the EBL has been the best price for what you get, and at this time, if I was doing this again, I would only purchase this style power station for all of my photo booths. It works great for the iPad booths, DSLR booths and event the Magic Mirrors with or without printing.
EBL Voyager 1000 Power Station
Jackery Explorer 1000 Power Station
Demotour Portable Power Station 1500W, 1408Wh LiFePO4 Battery Generator
Here is a example of the units side by side to give you an idea of size. The Demoutour has the most capacity, but is significantly larger. I still like the EBL for the size and capacity, but the larger capacity of the Demoutour Power Station is very useful.
If you’re looking at smaller battery packs, make sure you check out this post about the smaller battery packs.