If you want to recycle an old electric toothbrush or pair of headphones with a lithium battery embedded inside, it can be hard to find a place to do it—and many existing battery collection boxes are fire risks. That’s why Redwood Materials, the battery recycling and energy storage company founded by ex-Tesla engineer J. B. Straubel, just redesigned the collection bin.

The new bins, rolling out first in San Francisco stores in partnership with the city’s environmental department, can accept any type of rechargeable device, from phones to electric razors, earbuds, and loose lithium batteries. When someone drops a battery or device into a slot, the bin........

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