where can used batteries be disposed
Regular flashlight batteries can be disposed of in the trash (generally, some states, like California, have more restrictive rules) , though it is best to take them to a recycler. Mercury-oxide and silver-oxide button batteries are often collected by jewelers, pharmacies, and hearing-aid stores who sell them to companies that reclaim the metals.
Here is the bottom line: 1  Never dispose of batteries in fire because they could explode. 2  If you have large numbers of alkaline batteries (say dozens or hundreds or more) to dispose at once contact your trash disposal company or municipal waste duisposal department for instructions.