Check this out a 17 year old kid is creating "light sabers" powered by 2 18650-lithium ion batteries. So after our Model S battery packs are replaced, we could use the old batteries to equip an army of Jedi knights. Drive on and may the Force be with you.
.https://www.youtube.com/watch?v=96E0RfyL2Gc&feature=youtube_gdata_player
.https://www.youtube.com/watch?v=96E0RfyL2Gc&feature=youtube_gdata_player