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Batteroo Boost: AA, AAA Battery Life Extender

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So you would like your AA, AAA, C, and D-cell batteries to run for a bit longer? Batteroo Boost might help. It is a stainless steel sleeve that slips over disposable batteries and increases their lifespan. It lets you tap into the remaining energy of batteries you may be ready to throw away.

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Batteroo Boost sleeves work on new and used batteries. They can be used on different batteries.

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