4ms 45w pod power brick price : $15.00

power brick for powering pods. one power brick can power up to 10 typical pods. pods can be daisy-chained using a barrel cable or long barrel cable.

features:
15v/3a (45w) / 2.1mm barrel plug (5.5mm outer diameter) / positive center

you also may use your own power brick if it meets the following requirements:
15v to 20v dc
positive center 2.1mm barrel plug
minimum 20w output power
low-noise output