Glad I wasn't the only one who hadn't heard of them
![Tongue :P](/Smileys/throwback/tongue.gif)
I'm definitely curious about building some honkin' power packs. Not for festivals, but for power hungry preamps, etc.
Weird that it doesn't include a wart.. But that is a powerful wart - 5 amps, so that is unusual. You may not find it at the shack.
I'd do some searches for reviews in r/c airplane forums before ordering, to figure out which model and import dealer is best.