In this video I give a brief introduction to my DIY Portable Power Pack that I built using used 18650 Li-Ion cells from old Laptop batteries. THis video is the first in a series of videos that will show how I built the Power Pack and each of the components that I used. I also plan on showing the process I use to make sure the cells that come from the laptop batteries are is good working condition. When I first started looking into building something like this most were using Lead Acid batteries for their storage. I then started looking into what I could do with used Li-Ion cells because new Li-Ion cells were so expensive. Please subscribe to my YouTube channel if you like my videos.