New Battery - Charges 70% in 2 min

[red-beard]

Article here:

New Batteries Take 2 Minutes to Recharge 70%

I am a bit skeptical.

To recharge a 60kWh Tesla, 70% in 2 min, assuming we hold the charging voltage to 600 Volts means a charging current of 2100 Amps. 600 is the defined "low voltage" threshold.

This would be 1.26 MW of power! Serious switching equipment would be needed.

To carry this would require a cable made from ten 4/0 copper cables, each 0.46 inches (11.7 mm) in diameter.

If we use can use 6000V (medium voltage), then it would require only one 4/0 cable. However the rules are very different above 600V

Any thoughts?

[Flieger]

Yeah, the 70% charge in 2 minutes only applies to the AA sized cells they tested. YMMV Or maybe they are banking on Lockheed-Martin's pocket-sized fusion reactor.

[gshase]

I do not see the numbers adding up with Ohms law still in effect + the 20 years.

[GH85Carrera]

I would love to call the power company and tell them I need megawatt power at my house. How long would they laugh.

[red-beard]

The issue is "demand". In commercial settings you are charged by the kilowatt-hour, THEN you are charged by your maximum demand. That demand charge will be very very costly.

[red-beard]

For commercial properties, the electric charge is as follows:

Your average price for electricity will vary according to your usage and the components shown in the LSP rate formula below:
LSP Rate (in $ per KWh) = (Non-bypassable charges + LSP customer charge + LSP demand charge + LSP energy charge)/kWh used
Where:
• Non-bypassable charges shall be all TDU charges and credits for the appropriate customer class in the applicable service territory, and other charges including ERCOT administrative charges, nodal fees or surcharges, RUC capacity short charges attributable to LSP load, and applicable taxes from various taxing or regulatory authorities, multiplied by the level of kWh and kW used, where appropriate.
• LSP customer charge shall be $0.025 per kWh.
• LSP demand charge shall be $2.00 per kW, per month, for customers that have a demand meter, and $50.00 per month for customers that do not have a demand meter.
• LSP energy charge shall be the sum over the billing period of the actual hourly RTSPPs, for the customer’s load zone that is multiplied by number of kWhs the customer used during that hour and that is further multiplied by 125%.
• The minimum LSP energy charge is 4.5¢/kWh.
• RTSPP interval prices are published at Electric Reliability Council of Texas

So, the demand charge is $2 per kW. A 1 MW demand will be a $2000 charge per month. Say you have 10 charging stations. If they are all in use at the same time, anytime per month, the business will be charged $24,000 before actual electricity is charged.

[john70t]

[GH85Carrera]

So when I have that new mini fusion reactor in my back yard I can charge my electric car in short order.

[Joe Bob]

What? You can't set up a lightning rod and collect 1.21 Gigawatts and do a quick charge?

[GH85Carrera]

But then you need a time machine to go into the future to find out just when and where that lighting bolt will hit so you can be in the right place at the right time when you need it to hit when you go back in time to be ready. Wait, what?