One the Pedal Power 2 Plus, use outputs 5 and 6 to double the available current. Set switches 5 and 6 both away from NORMAL and use a current doubler adapter with the red 5.5 x 2.5mm center-positive barrel cable.
Current doubler: https://voodoolab.com/product/current-doubler-adapter/
Reverse polarity cable: https://voodoolab.com/product-category/cables/reverse2-5/
