I have the answer! Take them to any ACE hardware store in Washington DC and Baltimore (see loganhardware.com for a location near you)!
Their stores are now recycling all lightbulbs and these batteries:
* Alkaline Batteries including AAA, AA, A, C, D & 9 volt
* Lithium Batteries
* Lithium Ion Batteries
* Mercury & Mercuric Oxide Batteries
* Nickel Cadmium (NiCad) Batteries including wet and dry types
* Nickel Metal Hydride & Nickel Iron Batteries
Happy Earth Day!
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Thanks for the info. Happy Earth Day!