I was inspired by this recent pedal board thread to post another pedal board power option that I have enjoyed. After years of use, I thought my experiences would be useful to some. Because I really like pedal boards without AC mains, I power them with Li-batteries. For $37 I get the TalentCell Rechargeable 12V 6000mAh power pack: it fits nicely under a pedal board, the charge lasts a whole day of use* with my 6-7 pedals, and the real motivation -- zero PS noise. Yes, daisy-chained from the battery, no noise. Used on two different boards with different pedals, no noise. *if you have several digital pedals that suck 300+ mA each, power life per charge will be reduced! 12VDC for 9VDC pedals, you say? In real world use, this pack outputs 11-to-9.5 VDC -- no pedal worth spit is going to have trouble with such minimal "over-voltage". Even my cheap Chinese digital mini pedals thrive. Plus, most drive pedals do better with more voltage. Here I have it mounted with velcro under a Pedaltrain Nano+ (angled w/feet lifts): The only issue to deal with is that the polarity needs to be swapped from positive tip to negative tip at the PS connector. There are adapter wires available to do this, or whip out your soldering iron to change the polarity on the daisy-chain power distribution cable. Between the board rails, I can see the battery level prior to full discharge: I've been using this power scheme for about 4 years, and still I marvel at how awesome it works every time I use them!