Everyone wants to recycle their batteries, but drop-off locations are hard to find. A new fire-safe bin could make the process easier. 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 JB Straubel, just redesigned the collection bin.