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        There’s little difference in the environmental impact of one battery to another when batteries are in use. What differentiates iron flow batteries from other types is the environmental impact of production and end-of-life activities. Iron flow batteries are cleaner to produce and easier to recycle and reuse electrolyte at end of life.

        Along with a greener life cycle, iron flow batteries have longer life: 20 years, versus the 7-to-10-year life of a heavily cycled Li-ion battery.

        There’s less environmental impact when you need to build fewer batteries over the long run. That, too, makes iron flow batteries the eco-friendly choice.

Iron flow batteries: Li-ion batteries: Other batteries:
Contain no toxic materials Require costly, energy-intensive smelting operations for recycling More mining, more processing, more cost, more energy use and potential pollution
Require no special permits for disposal Contain a wide variety of materials, which makes recycling more difficult More infrastructure  results in environmental degradation
Can easily be broken down into components and recycled Are difficult to dismantle for recycling More pollution on soil and waterways, harming plant and animal life
Are classified as hazardous waste due to combustibility and chemistry involved