So all of my boards run 10S battery. It’s just something that has happened and now I like the consistency. I’m building a 10S10P battery that I can Velcro to the top of any of my boards and have crazy range.
3 Likes
Why are all the batts unwrapped?
1 Like
I think they are wrapped in clear heatshrink, well I hope they are
2 Likes
How are you reaching down to the positive contact for the connection? Spot-welded nickel strip or will this be a compression pack?
For those who don’t know this cell doesn’t have a standard top contact, it is recessed and has a fuse wire/strip welded to it. When you buy these cells they have had the fuse wire clipped off, standard top contact structures welded on, and wraps added.
4 Likes
You cannot spot weld because the positive terminal is aluminum. The 3D print has a dimple which pushes a wire mesh into the terminal it’s kinda hard to see in these photos but it’s the best I have. They eventually get screwed together to keep the compression.
4 Likes
Thanks for the photos!
Ahh….so Tesla’s fuse wire/strip connection is laser welded then?
Pardon the messy workshop 
2 Likes
If it’s not messy then you’re not doing any work. 
9 Likes
It was definitely a learning process removing and cleaning those cells but after trying a few different things I figured out how to do it pretty quickly. It had 396 cells on it and I’d say it would probably take me about 8 hours to remove and clean all the glue off all of them.
1 Like
Is there a risk of the braid pushing into the negative rim of the cell?
I suppose there is always that risk. I put a fish paper ring down and then wrapped over that.
2 Likes
I’ll be using the same compression mechanism, tell me your feeling of it when you assemble it !
I already have this 10S2P pack completed and it is great as long as you have quality 3D prints you’ll be fine. I have 20 miles on that pack and I’m mailing it off to a client.
They are not the best performing cells in the world but I paid $1.25/cell for them so I can’t complain too much.
1 Like
Thirty-five 10S chargers and 15 boards later, this hits me so hard. And also 12S LiFePO4 charging to 42V.
1 Like
Nice. I did a external 10s pack a while back ago for longer range.
I’m able to go just over 40+ miles if I keep the Watts/miles reasonable with the pack onboard and the one I carry.
This is a 10S10P pack, but with 18650s. (Panasonic PF)
So I’d imagine with conservative settings on polyurethane you should be able to beat that. For reference I am 210lbs (96kg)
On my primary board I have a 10s7p 25 r (17.5ah) and I can get 30 miles on that. This 10S10P will be 43ah. Combined I should get close to 100mile range. That board is on 97mm Thanes.
2 Likes