» Video »How to make a do-it-yourself AAA battery charger at home

How to make a do-it-yourself AAA battery charger at home

How to make a do-it-yourself AAA battery charger at home

Each of us at home has devices that run on AA or AAA size batteries. In addition to using conventional batteries in technology, some prefer to use batteries that are charged through special charges. It is the batteries that help many save a lot of money by refusing to buy disposable batteries.

But charging for batteries is increasingly being sold by Chinese and therefore their service life is very short-lived. So what to do when you urgently need to recharge the batteries, and there’s no time to go shopping, looking for a charger?

There is an exit! Moreover, it is quite simple. You can make homemade simple charging for your batteries from the most common materials at hand. You don’t even need to go to the store for this.

In order to understand what is at stake, we suggest you watch the video:



To make a charge, we need to prepare:
- housing for inserting batteries;
- old phone charger;
- a knife;
- glue gun.

We begin to manufacture charging for batteries. We take the charger from the old phone, which should be designed for about 5 V. Cut off the tip of the part that connected to the phone and strip the wires.


Determine the polarity of the wires using a tester.

The case for inserting batteries can be separated from any old children's toys that worked on batteries. We mark on it for ourselves where the “plus” will be located, and where the “minus” will be.


We connect the stripped wires from the old charger with the battery case. The wires are first screwed to the terminals and then secured with a glue gun or soldering iron. When connecting the charge to the case, you need to be careful not to reverse the polarity, otherwise the charge will not work.

After applying the glue, you need to give it time to dry.

When the glue is completely dry, you can begin to test a homemade battery charger.
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9 comments
We heard a jingle, but don’t know where it is! There you need a light bulb sequentially at 6 V. The charge of 2 finger batteries is night.
Quote: Dmitrij
Yes, it’s unlikely to explode ... the current is small, the maximum will heat up.

Why would this current be small? Depending on the type of memory - a minimum of 0.5 A, and most likely - more.
Well, this is a question for the "author". It’s now they’re cheap, and before, there was a shortage at times and places, so they had to be charged. Only if you charge it, you need to do it correctly, and not in the way the "author" suggests.
What for?!!!! Why charge the batteries, all the more so, the cheap ones - the salt ones?
Salt elements can be partially charged (not at full capacity) several times, but, of course, not in such a wild way, but with an asymmetric current. SC elements can also be charged several times with a current of 0.1C.
Well, you still remember how we cooked them in the 80s: smiley:
Yes, it’s unlikely to explode ... the current is small, the maximum will heat up. That's when they heat up, you can take it out)) You can charge it like this two times, in the remote control from the TV they run another month or two.

And finally, crush the batteries with pliers (or, like me, do not repeat them with your teeth))) Then you will surely squeeze out all the juices from them.
In the army, rechargeable flashlights were charged (face), batteries at radio stations exploded only in this way. Moreover, the charges were not self-made, but factory ones with training (charge-discharge).
Do not repeat! Not suitable for either batteries or batteries (more precisely - batteries). You can, of course, in an emergency, revive the batteries for work within a few minutes, but no more.

We advise you to read:

Hand it for the smartphone ...