Hey guys, hoping someone can help me here with this question. My electrical knowledge is pretty basic, so this is probably a pretty simple question to some of you. Basically, I have a TC Helicon vocal processor that needs a 12v power supply. My Friedman power bank has 10 9v outputs. In the manual it states that I can use a provided cable to use 2 9v outputs as one 18v, so my first question is whether the 18v connection would power the 12v pedal? If not, is there something I can buy to convert an output or two to 12v? I would like to avoid buying a whole new power bank for the one pedal.