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Tesla Semi has a million-mile battery, claims Tesla

Tesla Semi Jay Leno

Tesla Semi program lead Dan Priestley took Jay Leno on an extensive tour of the production-intent electric truck, revealing significant engineering details — including 1,000 lbs of weight savings that bring the 500-mile version to payload parity with diesel trucks.

The episode is packed with new technical information about the powertrain architecture, charging capabilities, and production readiness as Tesla prepares to ramp its dedicated Semi factory outside Reno, Nevada, to 50,000 units per year.

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Amazon beats Jackery’s spring sale on Explorer 2000 v2, Segway GT3 superscooter back to low, more in today’s Green Deals

Today’s 9to5Toys Green Deals is headlined by Amazon beating Jackery’s spring sale on the Explorer 2000 v2 Portable Power Station, Anker SOLIX power stations and bundles at lows from $150, up to $720 off Lectric e-bikes, and Segway’s GT3 superscooter back down at its $1,500 low. Head below for a closer look at the details.

Head below for other Green Deals we’ve found today and, of course, Electrek‘s best EV buying and leasing deals. Also, check out the new Electrek Tesla Shop for the best deals on Tesla accessories.

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Dept. of Interior bribes oil company $1B from taxpayer coffers to stop wind power

The Department of the Interior, headed by a man who has received hundreds of thousands of dollars in bribes from oil companies, just declared it will spend $1 billion of your dollars to convince a French oil company, TotalEnergies, to stop development of affordable, reliable offshore wind and instead shift to expensive, unreliable liquified methane gas.

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Tesla patent reveals dual-battery system for trailer-mounted range extender

Tesla patent drawing showing a Cybertruck towing a trailer with an auxiliary battery pack for range extension

A newly published Tesla patent application describes a sophisticated dual-battery management system designed to integrate an auxiliary battery pack with a vehicle’s primary pack — including a configuration where the auxiliary battery lives inside a towed trailer.

The patent was filed in August 2024, months before Tesla officially cancelled the Cybertruck’s bed-mounted range extender, suggesting the automaker’s engineering team continued developing the underlying technology even as the original product was being abandoned.

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Donut Lab solid-state battery: 5 independent tests in, still no energy density or cycle life data

On today's extraordinary episode of Quick Charge, we reflect on the fact that extraordinary claims require extraordinary evidence, and both Donut Labs AND Tesla are a long way from turning everyone into believers.

Donut Lab has now released five independent test reports from Finland’s VTT Technical Research Centre on its solid-state battery — and not a single one addresses the two claims that actually matter: the 400 Wh/kg energy density and the 100,000-cycle life.

The Q1 2026 deadline that Donut Lab set for delivering production batteries inside Verge Motorcycles is eight days away. The latest report, a cycling test dated March 13, adds another data point — but the overall picture remains unchanged.

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EVQ: I drive my EV for work, but charge at home – how do I track charging costs?

EVQ: I drive my EV for work, but charge at home – how do I track charging costs?

EV enthusiasts and evangelists are always ready to answer their friends’ questions about going electric. Sometimes, they even get it right! In this series, we’re taking a look at some next-level EV questions that don’t always have easy answers, starting with: I drive my EV for work, but charge at home — how do I track charging costs?

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Tesla and SpaceX announce $25B ‘Terafab’ chip factory — here’s why it reeks of desperation

Tesla and SpaceX have unveiled “Terafab,” a joint $25 billion chip fabrication facility in Austin, Texas, that Elon Musk claims will produce 1 terawatt of computing power annually. It would be the largest semiconductor fab ever built — by an absurd margin.

Musk took the stage at the defunct Seaholm Power Plant in Austin on March 21 to officially launch the project, calling it “the most epic chip building exercise in history by far.”

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Fast flop: stupid fast Audi RS e-tron GT gets over $50,000 in discounts

New 2025 and older Audi RS e-tron GT for sale nationwide

With almost 1,000 hp and a blistering 60 mph coming in just 2.4 seconds, Audi’s electric flagship super sedan made headlines and set performance records when it was launched back in 2024. Unfortunately for Audi, it didn’t set many sales records, and you can now buy the ridiculously rapid RS e-tron GT with more than $50,000 in discounts. (!)

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Mahindra reveals Batman BE 6 EV – and it’s kind of amazing [update]

Mahindra Built A Batman SUV And Somehow It’s Completely Serious

Indian ag and automaker Mahindra has launched a limited-run Batman Edition of its BE 6 Electric Origin SUV, calling it, “a production car that brings to life a rare fusion of cinematic heritage and modern luxury, inspired by Christopher Nolan’s critically acclaimed The Dark Knight Trilogy from Warner Bros. Pictures.”

UPDATE 21MAR2026: if you bought one last year, Mahindra could buy it back.

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A 24/7 solar farm-building robot just hit the market

solar robot

The US needs a lot more electricity fast, and one company thinks robots can help build it quicker.

Berkeley, California-based Terabase Energy says its next-gen Terafab automated solar construction system has finished field testing and is now ready to ship commercially. Terafab V2 brings autonomous robotics and AI into the way massive solar farms are built.

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