40a5bd87_ment_of_Environmental_Services__Mercury_Free_Alternative
[Consumer Product] Button Batteries [Description] Button shaped batteries usually found in watches, calculators, toys, greeting cards, musical books, hearing aids and pagers. [Mercury-Free Alternative] 
None, take to HHW collection
Mercury in Household Products - Mercury Reduction Through the Use of Pollution Prevention Techniques - NH Department of Environmental Services
Mercury-Free Alternative