Heya nerds. Fellow nerd here.
I was recently watching one of the Luna Cycle Videos, and it got me thinking. They Pot each battery in a sort of epoxy, making it (in theory) waterproof, and pretty rugged. Introducing countless post-it notes of thought later, my take on rugged batteries for esk8.
So. What we have above is 12 1s4p 21700 packs, to be wired in series, on a Landyatchz Switchblade 40’’. Each individual pack will be potted, feature cell level fusing, and will interface to the main system via an XT-90s. The plan is for them to have a shared BMS, but like the rest of this project, nothing is certain.
So what does this accomplish? Im so glad you asked.
- Hot-swappable packs -If a pack goes bad, you can easily swap it out. Furthermore, you can easily change battery configs without too much heartache, Want to go to an 8p setup? If you have the ground clearance, it should be possible.
- Flight friendly (ish) - Each 4p pack has an estimated Wh of 67.2, when using Molicell p42a’s. This is well underneath the 100Wh limit that most airlines seem to have set, and since they have XT-90s connectors on the end, they can easily be isolated.
- Rugged- Because each pack is potted, it’s inherently waterproof, but also more resistant to vibrations and hits. For more discussion on potting, check out this Endless Sphere thread.
I’d love to hear what you guys have to say, especially in the way of suggestions/ feedback.
As it stands, im going to continue polishing up the design, and then hopefully work to make it printable, and then eventually, scalable. My CAD skills are abhorrent at best, so its taking me some time to learn from my mistakes, but slow and steady wins the race!
Thanks for reading