I recently purchased the PPBA and have been searching for a solution to this problem. Today I think I may have found some ideas. Remember the adjustable output can supply the 5V the Pi wants. www.amazon.co.uk/dp/B088LLSVQS/ref=cm_sw...86CD24EENZVCRJRVEFSH Although the headline says it's a 2.5mm plug, one user complained that it was actually a 2.1mm plug. www.amazon.co.uk/dp/B07ML3VFXV/ref=cm_sw...0KY9DB2TX6MYHVHBYR9E This might work with the supplied 2.1mm leads.Read More...