I am currently working on a project for my entrepreneurship class here at the UofM. I am looking to build a portable charging device and I currently have a list of parts that I think I will need. I have one question about a particular part. It would be greatly appreciated if someone could facilitate a 5 minute phone call with me to answer this circuitry question. I look forward to a response but understand if no one has the time to help a non-member.