DIY cordless sprayer using 20V Dewalt battery

I wanted a cordless electric sprayer that uses the batteries that I already own, but I didn't want to pay the $$$$ that Dewalt wants for theirs. So, I went online looking for guidance and found out that others (namely, Peter Dymond - his video is on here too) had already beat me to the punch. Works for me; saves me the research! I had a few of the parts already on hand, but I did end up buying a few of the bits from Amazon and the local Rural King supply. All in all, I think I have around $100 invested, and it's sure better than pumping a sprayer handle all day. The video I based most of my build on: https://www.youtube.com/watch?v=by2gAaDmeeg&t=1125s