How to Recharge Alkaline Batteries

by Backdoor Survival:

About a month ago, I learned that it was possible 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.

A LADY ON A MISSION

Do you every get a bug in your bum and decide that nothing will stop you from the mission or task at hand?  Well, that was me.  I wanted to prove to myself that old alkaline batteries were still usable and further, as Dennis Evers (Preparedness is Fundamental) says, you can have free batteries for life.

The first thing I needed to do was to gather up the gear:

Old “dead” alkaline batteries
Battery tester simple enough to use without a Ph.D. in electronics
Battery charger designed specifically for alkaline batteries
Test gear such as flashlights, remote controls, wireless headphones and more

Simple enough although I did have to purchase the tester and the charge.  But more on that later.

SORT THROUGH THE BATTERIES AND CULL THE DUDS

For years I have been saving all of my old batteries in a box in the garage, thinking that one of these days I would find someplace to recycle them.  Where I live that is easier said than done so the box was pretty darn full which was great because that meant I had a lot of raw material to work with.

batteries.jpg

While waiting for my battery tester and alkaline charger to arrive, I sorted through the box, weeding out any leakers as well as odd ball batteries such as cell phone and hearing aid batteries.  According to Wikipedia, the reason a battery leaks is this:

As batteries discharge — either through usage or gradual self-discharge — the chemistry of the cells changes and some hydrogen gas is generated. This out-gassing increases pressure in the battery. Eventually, the excess pressure either ruptures the insulating seals at the end of the battery, or the outer metal canister, or both. In addition, as the battery ages, its steel outer canister may gradually corrode or rust, which can further contribute to containment failure.

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