If you have a "dead" rechargeable battery do not throw it away immediately. Try the trick below which might bring her to life. At least you have nothing to lose.
Usually rechargeable Ni-Mh batteries if not charged properly, they are likely to hold “μνήμη” or even refuse to recharge altogether. So if you have a rechargeable Ni-Mh battery that no longer refuses to charge, then before you throw it in the bin recyclings, try the following trick. You will only need a second rechargeable battery in good condition and a…. barbecue tongs!!!
Get a fully charged similar battery with the one that is "dead" (of the same type) and hold them so that their two negative poles are joined. Then hold their two free positive poles between a barbecue tongs. In fact, just short the two positive poles. But not for long, only for 30 seconds. See how it is done in the following video:
This trick does not promise that it will work every time or on every battery, nor that if it works once on a battery then it will work again for a second time on that particular battery. Not even that it will liven up the battery with the same power loading that he had before he died. However, you simply do not lose anything if you do. You had it to throw anyway.
However, we wish you good luck.
I didn't expect it, but out of 4, 3 worked!!!!
Thank you very much!!!!