That's very interesting about the cord. Makes sense now that you say it. Then there is the matter of the extra hot water...maybe it makes sense integrate a coffee machine into it..
On Tuesday, March 18, 2025 at 09:05:33 PM PDT, Bill Dube via EV <ev@lists.evdl.org> wrote: I suspect they are using LiFePO4 cells as they tend to have low internal resistance. 10C is no big deal these days, believe it or not. The Formula One A123 Systems cells, designed for use in the F1 kinetic energy recovery system, (KERS) that I had in the Killacycle were LiFePO4 and would discharge at ~500C. These 18700, ~1.5 A-hr cells would withstand a 500+ amp discharge until they were completely flat. Keep in mind, this was 20 years ago. Cell technology has FAR exceeded this now. I never tested the max charge rate, but I expect it to be at least 1/4 of the discharge rate, likely closer to 1/2. Maybe 200C or more. 50C would be like water off of a duck's back. The main limitation to fast charging is the charger and the charger cord. Not the cells in the car. The charger no doubt has some sort of associated battery bank to even out the peak load on the grid. Wouldn't surprise me if it the same battery they are using in the car, or perhaps the same cells. The charger cord is most certainly water cooled. When you get much over 50kW the charger cord has to be water cooled because the wire gauge gets too big to handle and the temperature gets beyond what is practical. Bill D. On 3/19/2025 3:25 PM, EV List Lackey via EV wrote: > Chinese automaker BYD claims to have developed an EV battery that can charge > at a full megawatt. They also say they'll build a Chinese network of 1mW > chargers for their cars fitted with the battery. > > The cells can accept 10C (10 times the amp-hour capacity expressed in > amperes) and the battery is 1000 volts nominal. > > BYD EVs using the battery will be able to add 400km (!) of range in a 5- > minute charge. > > https://insideevs.com/news/753913/byd-ev-one-megawatt-charging/ > > That's a downright unsettling amount of power. > > David Roden, EVDL moderator & general lackey > > To reach me, don't reply to this message; I won't get it. Use my > offlist address here : http://evdl.org/help/index.html#supt > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > Capitalism is the extraordinary belief that the nastiest of men, > for the nastiest of reasons, will somehow work for the benefit > of us all. > > -- John Maynard Keynes > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20250319/417ae6eb/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
