Don't Throw Away Old Batteries! Easy Way To Restore 1.5V Battery To Like New

This is the first thing that comes to mind for amateurs, but it only lasts for a while and there is a risk of Liquid leakage. Use rechargeable batteries. The best in the world is Panasonic's rechargeable Evolta, next up is Eneloop.

Never reproduce this at home fire danger single batteries cannot be recharged. This kind of video should be censored.

When I was a kid I found that I could do this with a wall wart and my cassette player. The batteries would charge up but not last last a day and then eventually started oozing acid.

There are ready-made battery holders on the market for €1-2. In this arrangement the batteries may leak or explode. In any case, the charge acquired is minimal, it will never be like that of a new battery.

I don't have pvc pipe. can i use a really long piece of celery?

Do not do this! Years ago I tried reactivating a battery using this method. To be safe I enclosed the gear inside a metal cookie tin and then left it in my garage charging at about 100 mA. When I returned later my garage was full of black smoke! Fortunately no damage was caused except to my pride!

ok but the battery do not keep the new charge any longer, ! just test it after 1 or 2 hours after charging it, the voltage decrease fast , even if not working...

Las baterías ( o pilas ) secas no se recargan ....yó lo hice con un transf y es cierto q vuelve a su carga normal .....hay q controlar el calor d la pila mientras se recarga ( para q no estalle ) .....el problema es q la carga aplicada no dura absolutamente nada ...o sea muy poco ....las pilas o baterías secas tienen un proceso d una pasta dura q almacena los electrones ...cuando estos pierden la energía, la recarga es inútil ...porq son secas ....carga ...pero no dura nada

Time killer😊

Very dangerous and it can explode!!!

I found it easier to buy a Bulk Pack of AA Batteries when I was in the DIY store. Can't be bothered with all that messing around to save pennies.

Wow... And as promised, this = soooo EASY!! With just twenty dollars worth of materials and a few hours' time you can save the $4 it would cost to buy 3 new batteries. Genius!! And those frankenbatteries are BOUND to hold a charge for at LEAST an hour or two! Next: an in-depth tutorial on how to restore used kleenex (paper handkerchiefs) using only hydrogen peroxide, carbolic acid, jumper cables, an electron microscope and a particle collider -- so stop throwin' them away!!

Holy shit just go out and buy a pack of batteries for a $1.99... 🤡

DANGEROUS!!!!!

This is not a how to restore one trip batteries, this is flogging a dead horse. Getting an apparent immediate readable voltage does not mean a recharged battery. It wont have much if any ampere hours in recharged storage. Its slightly dangerous too, they may explode in your face. A one time battery works at the principle of sacrificing 2 different metals according to galvanic series (search and read) exposed to an acidic solution that corrodes the least valuable metal. Battery dies at the depletion/total corrosion of that lesser metal. But hey, I like your home made battery array. You could make some nice power packs for rechargeable batteries with those. Go shop some 18650 Li-ions or so and have some fun. Long range e-bike? Electric moped ? Solar panel power bank ? Lots of people throws away power tool batteries when they fail, usually its only a cell or two that has gone bad and there are usually many in each pack, each holding 3,6V as healthy. Both most battery power tools and most laptops uses 18650 Li-ions. There´s a good and free waste reuse supply.

Besides this, it has got power again, but for how long? The capacity is most important

We have a charger that can recharge ordinary batteries.(I bought it about 20 years ago and its called battery manager ultra) It trickle charges them. I have used it for years without problem. A battery charged with it will work a second time and run out more quickly. It can then recharge again and each time runs out faster. I think about 3 times is the limit. The better batteries do best with it. Very cheap batteries you only get one recharge and then they just wont . It shows a screen with how its doing, whether its viable and turns it off when its done. You cant do lithium or damaged batteries with it. Your idea seems similar but I suppose you havent got a safety measure so you must monitor it by eye and not leave it when charging.

People have been recharging "dry" batteries for over 100 years. Competently designed systems use a variable power supply with a (milli) ammeter in series to minimize the chance of excess current causing the batteries to overheat and burst. The best results have been mediocre with the recharged cells having but a small fraction of the amp-hour capacity of new ones.

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Lo mas posible es que se hinchen o derrame el acido, aparte de quemarse con desprendimiento de vapores tóxicos