DNA200 / DNA250 board mount + dual series 18650 sled for Alpinetech DNA P+ enclosure.
Parts list and how-to for the DNA75 set (modify wiring accordingly for the DNA200 / DNA250): http://www.mamumods.com/tutes/dna75-mount-sled-alpinetech-dna-p.pdf
Wiring guide for the DNA200 with dual series 18650 with reverse polarity protection: http://www.mamumods.com/tutes/dna200-2x18650-rpp.pdf