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This Ni-MH battery can be recharged approximately 2,100 times and will still retain 70% of its original energy in ten years' time. Promoting the shift from dry cell to rechargeable batteries, it will help to create a sustainable society. The coloring is based on the earth and the bounty of nature, to encourage sustainability and let people enjoy charging their batteries again and again. The different colors help users keep track of which are charged or uncharged. The charge for their shipment uses solar energy and is packaged in naturally-derived plastic.