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You don't mention what kind of battery you have. Rechargeable are easier to dispose of then regular dry cell "household" batteries.
Take the rechargeable batteries to any of the participating retailers. You can call the consumer helpline, 1-800-8-BATTERY, to find the retail collection site nearest you.
Regular household batteries that are not recyclable will end up in the trash.
If you wish to find more detailed information then check the following web site;
Environment, Health and Safety Online
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