Information on proper disposal of various types of batteries can be found here.
NOTE: If you have a swollen or damaged lithium-ion (li-ion) battery it is a serious fire risk. Place in a sealable plastic bag. If you have cat litter or spill absorbent add that to the bag to cover the battery. Place in a plastic pail with additional cat litter/absorbent. Bring to your town transfer station and let the attendant know you have a damaged li-ion battery. Or call the solid waste district office at 413-772-2438 and make an appointment to bring it to the office at 117 Main Street in Greenfield.
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