Hexbyte  Hacker News  Computers Ten years left to redesign lithium-ion batteries

Hexbyte Hacker News Computers Ten years left to redesign lithium-ion batteries

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An engineer inserts a lithium-ion battery from an electric vehicle into a testing system for recycling.Credit: Simon Dawson/Bloomberg/Getty Electric vehicles need powerful, light and affordable batteries. The best bet is commercial lithium-ion cells — they are relatively compact and stable. But they are still too bulky and expensive for widespread use. The performance of rechargeable…

Save the Scooters, Redesign the Streets, and Save San Francisco

Save the Scooters, Redesign the Streets, and Save San Francisco

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The scooters have disappeared from San Francisco. In anticipation of regulations that took effect today, Bird, Lime Bike, and Spin have warehoused their fleets of the shared electric two-wheelers. They won’t be able to redeploy them unless the city grants them a special permit, which could take the better part of the month. Good riddance,…