You need to couple your pedals to the correct output on your power bank or use the correct transformer.
Firstly identify the power ratings needed to drive each pedal Voltage 9(V) and the current in milliampere (mA)
In the previous blogs we looked at the power rating from the mains (AC), the output from the power banks(DC), transformer power and the importance of having the correct ratings with respect to the voltage (VDC) and the current (mA) of the output from the power banks and transformer. It is this current that drives your pedals. So here are my pedals with the voltage and current ratings they need. You should check the specs for your pedal in the manufacturers documentation if you are unsure please check the power list at http://stinkfoot.se/power-list which has data on the most common pedals. My pedals are shown below in the slideshow.
Voodoo labs, Giggity: 9V-35mA
Voodoo Labs, Micro Vibe: 9V-50mA
TC Electronics, Sentry: 9V-100mA
TC Electronics,Triple Flashback Delay: 9V-300mA
BOSS Chorus: 9V-25mA.
BOSS RC looper 9V-195mA.
So these need to be matched to the DC outputs on the power banks and as we do not have a output over 400mA a transformer for the Octa-Switch needs to be used as it operates at 500 mA output, check previous blog post for the transformer at 2000mA. Also a transformer is used for the BOSS RC30 operating at 195mA.
All pedals at 9V and below 100mA go to the ISO 5 power bank outputs at 100mA. The micro vibe goes to the Carl Martin power back output at 100mA
To note is that the flashback at 300mA and Giggity at 35mA are coupled to the 9V-12V 400mA dual channel, This a dual channel because it has the same earthing point. If both channel are used and the combined current pulled is not over 400mA you can use these two channels to power these pedals.
Also to remember that the quality of cable used to couple pedal in chains is important. Length of wire definitely have an effect on current and voltage. Resistance is directly proportional to length. As the length increases, resistance increases, as a result current decreases.
Furthermore, The larger the cross sectional area of the wire, its thickness, the lower the resistance since the electrons have a larger area to flow through. This will continue to apply no matter how thick the wire is. The electron flow will adjust itself to whatever the wire thickness is. Electricity is nothing but the flow of electrons through a material. So the thicker the wire is the lower the resistance and thereby the greater the electron flow hence larger current.
In other words buy the shortest cable you can made from good materials. I use Planet waves 0.5 classic series instrument cables with right angle plugs. Also this rule is the same for the cables to your amp and guitar …keep them as short as possible.