Donut Lab's Battery has a Problem with Physics (and manufacturing)

Donut Lab claims to have a battery that achieves a whopping 400 Wh/kg of energy density, charges in 5 minutes, lasts for 100,000 cycles, uses abundant non-toxic materials, can maintain performance at extremely low temperatures, is safe at very abusive temperatures, and is lower cost than lithium ion batteries. The question is: Is the Donut Battery real? In my view, it’s not, and in today’s video, I’m going to walk you through why that’s the case from a first principles physics perspective and from a more pragmatic manufacturing perspective. Ziroth Analysis Video on Speculation:    • Decoding The World's First Solid State Bat...   Two Bit's Analysis on Donut's First Set of Test Results:    • Donut Lab's Solid State Battery Test are S...   Tom Bötticher Analysis Video:    • Donut's "Super-Feststoff-Akku": Batterie-C...   Channel Sponsor: https://www.rebellionaire.com/ Signature Solar Referral Link: https://signaturesolar.com/?ref=TheLi... These are the part of my system I purchased from Signature Solar: -EG4 6000XP Off-Grid Inverter (I use this for my grid-tied solar system with battery backup) -SnapNrack | TopSpeed™ | Solar Panel Roof Mount Kit (you can also get a skirt) -SnapNrack, GROUNDING LUG -PV 2 Wire Management Clip -10 AWG Copper PV Wire | Black and Red -Staubli | 20A | 1000V | In-line Fuse with MC4 Connectors (your amps may vary) -I cobbled together the cheapest solar and batteries from other sites. I expected it to save me money, but it ended up costing more for integration and I lost some functionality. If I did it again, I'd just by everything from Signature Solar in a package - they have kits with the batteries, inverter, and panels. Patreon:   / thelimitingfactor   Paypal: https://www.paypal.com/paypalme/limit... Teespring: https://teespring.com/stores/the-limi... Twitter:   / limitingthe   Venmo: @thelimitingfactor Timeline 00:00 Introduction 01:11 Defining Real 02:10 Ragone Plotting 04:17 Remembering QuantumScape 06:39 Battery Physics 10:56 Supercap Physics 14:11 Physics Summary 15:19 Manufacturing 18:45 Summary Intro Music by Dyalla: Homer Said