From Mission Engineering:
The Mission 529 is the worlds first USB power converter for effects pedals. Power up to five pedals directly from a portable battery pack, phone charger or computer.
Four isolated 150mA outputs for standard pedals, plus one 500mA output for high power devices . Link two 529 devices together to power up to ten effects pedals.
From the wall
If you have AC wall power available, just connect the 529 to the AC adapter with a USB cable. If you misplace the included AC adapter, you can use any USB wall power supply such as one the one from your smart phone or tablet.
From a battery
Power your pedal board from a portable USB battery pack, laptop, or a car’s USB charging port.
Home and studio
Connect the 529 to a computer or other desktop USB port.
Standard version includes USB wall power supply. Pro version includes USB wall power supply and a 10,000mA low profile rechargeable lithium battery.