Electric vehicles, power tools, smartwatches—Lithium-ion batteries are everywhere now. However, the materials to make them are finite, and sourcing them has environmental, humanitarian, and economic implications. Recycling is key to addressing those, but a recent study shows most Lithium-ion batteries never get recycled.

Lithium and several other metals that make up these batteries are incredibly valuable. The cost of raw lithium is roughly seven times what you’d pay for the same weight in lead, but unlike lithium batteries, almost all lead-acid batteries get recycled. So there’s something beyond pure economics at play.