Ever think about taking your studio strobes on the go? The Vagabond Mini Lithium power pack by Paul C Buff is a great way to go. This unit packs a punch of power at only about 3lbs. I received this unit before I got my Alien Bee 1600 strobes, so my first test was with a couple of Adorama 620 Flashpoint II units. The unit responded well. When I got my Alien Bee 1600 I did a more controlled test. (see video for A/C vs. Vagabond Mini Power Supply.) 
What you see on the front of the unit is a Power switch flanked by two 120 V Outlets. There is a battery indicator with three lights indicating ¼, ½ and ¾ + power. The unit also has a 5v USB power supply for cell phones and such, but will not charge an iPad. The unit has a 30A flat fuse which replacements could be picked up at your local auto parts store.
It also has a clamp on the bottom of the unit to attach it to a light stand. The clamp will not hold the unit where ever you clamp it. It will slide down to the next stop on your light stand. I usually attach my unit to the lowest section and allow it to rest where the three legs come together on the light stand.
These units are well-built and made in the USA. The Batteries come from China and are exchangeable for extended use. The Vagabond Mini Unit runs about $240, Extra Battery is
about $ 90, and a carrying case is about $15.
Video of Vagabond Mini Power pack in Buff Bag with spare battery.
Video of recycle comparison of Vagabond Mini Lithium power pack vs. A/C power. Great little unit for portability.
