About a month ago, I learned that it was possible not not only to test old alkaline batteries to see if they are still are usable, but also that, with the right type of charger, you can bring dead batteries back to life and that you can actually recharge alkaline batteries. To be quite honest, I was blown away.
Being a dutiful citizen of the world, when a flashlight. computer mouse, or portable electronic gizmo such as a remote control stopped working, I dumped the old batteries into my recycle box and installed some new ones. Of course not being wasteful, I favored the use of rechargeable batteries and was quite proud of my collection of various sized eneloop batteries which hold their charge for up to three years, even while sitting on the shelf.