Citizen Science: What to do with all those batteries?

So, how many items do we all have in our homes that are battery operated. I stopped counting at 25 (of course I think most of my daughter's toys consume batteries to make some noise ). Batteries are everywhere, and are of many different types. The other day while replacing a few I started wondering how to properly dispose of these things and came to a few realizations... Not all batteries are created equal!!

Most of the batteries that we purchase are alkaline batteries and unfortunately there aren't many recycling options for these. Fortunately legislation was passed to rid these disposable batteries of mercury and other harmful materials which previously was leaching out of landfills. The trouble is billions of the batteries are purchased by Americans every year and there are being used once and then discarded.

What can I do (or should I do) you may ask. Well think about using a rechargeable battery when possible. Yes, they do cost more money upfront but, you get many more uses out of them so the payback period is short. It would cost a ridiculous amount to operate my digital camera for instance if I kept putting disposable batteries in it. Additionally the main types of rechargeable batteries can be recycled at many easily accessible locations. So really it can be a win-win decision to buy rechargeable batteries for many of your devices.

We use A LOT of batteries in our DPS science kits too, Elecrticity and Magnetism uses 60 batteries per kit!  That adds up pretty fast when you are sending out 14-20 kits every rotation! 

As for how batteries work, here is a link to some great information. And, for those that are really curious and want to do some hands on experiments with making a battery or electrical energy source out of household items, the SERC has a Science in a Suitcase kit that will allow you to do just that!