If you are concerned about causing damage to the environment, then i suggest that rechargeable batteries would be perfect for you. You do not need to throw away the batteries, once it is used up and this will reduce the number of batteries going into the garbage sites. It may be more expensive to buy rechargeable batteries initially, but then in the long run, it will be cheaper. You would not be required to keep buying new rechargeable batteries as these batteries an be recharged many times over and over.
WHERE COULD I BUY CHEAP AA OR AAA BATTERIES ONLINE?
Some of the popular places where people buy AA and AAA batteries are Amazon.ca, Canadiantire.ca, Walmart.ca, Homedepot.ca, Bestbuy.ca, eBay.ca