this post was submitted on 19 Aug 2025
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As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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Why Can’t the U.S. Build 5-Minute E.V. Chargers? Chinese automakers have rolled out chargers that can mostly recharge a car’s battery in about five minutes. Yet U.S. technology lags far behind. (www.nytimes.com)
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[–] Steve 16 points 2 months ago* (last edited 2 months ago) (1 children)

That's not what that article says.

This past spring, two major Chinese companies announced breakthroughs in battery technology that will enable electric vehicles to drive hundreds of miles on a five-minute charge.

BYD, which is now the world’s largest producer of electric vehicles, has developed a battery that has a peak charging capacity of 1,000 kilowatts, also known as a megawatt.

We also have battery tech that can theoretically be charged that fast. We have for years. Charging a single small test cell in a few seconds is relatively easy. Getting it out of the lab, into a factory working at scale, then in vehicles on the road charging that fast is a very different thing. Those kinds of leaps in battery labs have been a dime a dozen for decades now. In the real world we just get a steady march of slow improvement.

While other automakers may eventually figure out how to build megawatt charging systems, it won’t happen overnight, Fisher said.

They haven't "rolled out" any chargers that can do what they are claiming with the batteries. As Naz@sh.itjust.works pointed out with the math. That level of charging doubles what even the best 800V systems can do. And there are barley a few dozen of those in the world.

BYD has promised to build 4,000 “megawatt flash charging” stations in China to support its new cars with 1,000-kilowatt charging capacity.

No time table. Nothing real. Just a marketing "promise".

[–] GreyEyedGhost@lemmy.ca 2 points 2 months ago

Those kinds of leaps in battery labs have been a dime a dozen for decades now.

I was pretty irritated when I saw this.

In the real world we just get a steady march of slow improvement.

Well, there goes my 15-minute tirade on how much batteries have improved in the last 3 decades.