I found this today and thought it was worth sharing here. I find this guys sort of annoying, but his method in this video is sound, and it appears that this phenomenon works. Basically beating on mostly discharged batteries allows you to get a fair amount more juice out of them. I suspect the amount depends on several factors, but it is good to know if you really need a bit more life out of a cell . . .
Looking at the size and voltage I decided to try to just charge some really cheap @ss AA alkaline cells when they did not turn on a light anymore
I posted it somewhere but it went a bit like this
New, runtime 100%
First charge, runtime 50%
Second charge, runtime 48%
And at 10 charges it was ~40% I think and then I stopped
Felt the cells the whole time while charging and they didn’t get hot, had the Liitokala dual bay charger on a metal tray.
10 times ~45% ment an extre 4 and a half times of light from the cheap zoomie (that would not have caused bad feelings if it would have broken down during the process ) I thought it was kind of neat. But maybe a bit unresponsable
I think there are chargers that do that. They charge very slowly and in cycles of on/off. The results I remember reading were close to what you have recorder.
Alkaline batteries are indeed rechargeable, just with greatly reduced capacity. For kids toys and stuff though they work fine, re use them 5 or 10 times then toss them before they leak. I have done it many times with no problems before. Just don’t try it with lithium primaries…