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Tesla Semi has a million-mile battery, claims Tesla

5 days 19 hours ago

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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Fred Lambert

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

5 days 20 hours ago

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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Simon Walsh

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

5 days 22 hours ago

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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Fred Lambert

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

6 days 1 hour ago

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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Fred Lambert