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.

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!

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

Very dangerous and it can explode!!!

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.

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.

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.

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...

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.

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

Ive recharged regular batteries for decades now. Yes some batteries when recharged will burst and leak all over the enclosed charging box so i set the box upright so if that happens the acids will only leak on to the lower pad. Ive recharged several two or three times before discarding. Never had any of them explode like a bomb although that can be a possibility so the reason for the enclosed box as an additional safety. Last five years i only charge nickel-cadmium, lithium, metal-hydride types. Got lazy to clean the box when one of the older lead-acid batteries would leak.

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.

５９８３人がこのような動画を見て、満足していることが、驚異ですね、

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

When I was 12, I used to do that with a long string of battery's on the Home phone line in my room. 1966. Whenever I did that, the phone would not work. People would call and freak out and call 'Bell" I never told my mom why but my batteries were all good..

1．7ｖの表示はﾃｽﾀｰの電池電圧測定端子での測定？　電圧出ても容量が低下してるから直ぐへたるんですよね！

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

充電器の両端に重曹を詰めるのは、どんな意味があるのでしょうか？

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.

I have batter rechargers. They seem to get the volts up but not actually be useful. They are supposed to work best if your just topping them off a bit.