Recent content by liveforphysics

Fantastic testing Paul! I've never tried washing soda, but it looks very promising from your data! How exciting!

I think you mean Wh/kg not Wh/Liter, as many commercial cells are >700Wh/liter. With respect to Wh/kg though, lots of large scale production automotive pouch cells >300Wh/Liter today and amazing cycle life. Wh/kg is always nice, but seeing it with a low specific impedance is what most...

Glad that you're not injured my friend!! Sounds like the bike is going to rip super hard when you get a clean pass in!

They made it clear that it didn't trigger TR from nail pen, as many other pouch cells will also achieve. This should not be confused with TR behavior being safe or unsafe, as no TR safety behavior was shown. That nail pen setup with the faceted nail tip which cuts like a broadhead is easier...

If things got as drastic as being limited to 700hp, I would sit and wait for the heat pumps to pre-heat the cells before driving. ;)

Love to see this work Paul! Thank you for sharing your tests. With the right endothermic fillers, you can pack feisty cells tightly together and still have 100% success in passing PPR (passive propagation resistance). If you have a Ramset nailer, throw a nail or two into cells in your test...

Theres already public data with numbers better than 315Wh/kg. They didn't stop development at 327Wh/kg. They are in normal thickness pouches with beefy thick tabs and thick foils for high C-rates. https://www.greencarcongress.com/2022/04/20220413-zenlabs.html

The cells are real. I was extremely surprised with the electrical performance.

If you don't pot the battery, it's a disposable fire hazard when exposed to humidity and time. Potting doesn't impact cell venting, I have the pressure curve data for different cells CID and vents to open in potting or bare, it's within a percent of the same pressures. Potting in the right...

I think a proper bike should throw your ass on the ground hard if you get in and whisky-throttle it. The bike and powertrain did exactly what I want a dirtbike to do, I was just too stupid of a rider to recognize I was on a proper bike at the time I went WOT.

When I have a free few hours to spend, I will open it up and take a look and share pics and lam thickness.

I have one of them, it's pretty amazing. I've only ridden it once because I wheelies over backwards so violently on my first part of my first ride that my leg hasn't recovered yet to have a second ride. Bad ass machine, suspension feels good, brakes feel soft, power and torque hit is serious and...

Potting is #1 protection. A large enough bellows with molecular sieve packs is also a feasible option, but may require a maintenance interval to swap out the sieve pack for the humidity that migrates through polymer materials, like the bellows.

Looks beautiful my friend. Make sure you put fresh humidity scavenger packs in just before sealing the lid. It's not uncommon for them to use up the first 70% of there sorbtive capacity in an hour or two of being inside a normal humidity room. I also have seen some of the silica gel style...

It's tough to say how thick those copper bars are. I'm hoping they are 3+mm thickness and say 10-12mm width (between each parallel pair). If it's ~33mm^2 will heat at 800amps from 50degC to 100degC in 14seconds assuming no cooling. In my experience with an 830Amp Sur Ron, it's very difficult...