This review is mostly for musicians on the LAB, but thought it would be helpful.
I'm a guitarist, and while sometimes I do enjoy plugging straight into an amp, there are times where I do want my effects. I have a large board that has all the pedals I need, and it's powered with a Voodoo Lab Pedal Power 2 - 9 isolated outputs, variable output to emulate old batteries (makes some pedals sound good, some bad, and some weird), but the large board isn't something I can fly with. I found myself needing a smaller board for an upcoming show in Cleveland this fall, and didn't want one of those One Spot switching power supplies.
So I bought the Pedaltrain Metro 16 - a reasonable sized pedalboard, and also the Pedaltrain Volto. The Volto is a lithium ion 2000mA battery that charges via USB, and has two 9V outputs. It comes with hook and loop to attach neatly to the bottom of the pedalboard.
Comes with 4 different AC adapter plugs for US/Japan, Europe/HK, and two other international ones (Angled 2 prong, small round 2 prong). You can also just use a laptop, computer or even an AC adapter in your car to charge on the way there. Comes with 1 straight 9V cable, 1 right-angled 9V cable, and 2 3-output daisy chain 9V cables, as well as 10 black zip ties to keep cables tidy.
Charge time is 1 hour for 6 hours of use, of course depending on current draw. With the pedals shown, I had about 130mA of current use, but not all the pedals are on all the time. Since our gigs are rarely longer than 2 hours, not a problem. Battery charge is indicated by 3 green bars on the side.
Using it was easy - hooking up the pedals to the Volto like you would with any other power source, and then using the zip ties to tidy things up. I wish the kit had a few zip tie adhesive tiedowns so that you could keep it really clean under the pedalboard, but that's nothing a trip to Fry's can't fix. Can't tell the difference in the sound of my pedals, which makes sense.
Will be taking it to a 3 hour rehearsal Thursday, so will update my review afterwards, but so far if you need portable power for a smaller pedalboard and don't want to be bothered by hunting for an AC cable or outlet, this is a pretty cool way to go.
http://www.pedaltrain.com/volto/