To assemble the simplest circuit powered by a battery, we have to resort to various tricks so that the wires fit snugly against the poles of the battery itself. Someone manages with electrical tape and adhesive tape, someone comes up with various kinds of clamping devices. But the contact in this case will be imperfect, which ultimately affects the performance of the assembled circuit. Often, the contact disappears or it turns out to be loose, and the device works intermittently. To avoid this, it's best to just solder the wires to the poles. In our article, we will tell you how to solder the wires to the battery so that the contact is perfect.
The simplest device example
The simplest battery powered device is an ordinary electromagnet. Using his example, we will check the performance of our student soldering. We take an ordinary nail, for example, weaving, we windcopper wire on it in dense rows. We isolate the turns from above with electrical tape. The electromagnet is ready. Now it remains only to power the device from the battery.
Of course, you can just press on the wire from each end of the battery, and the device will start working. But it's inconvenient to use. Therefore, it is best to ensure that the wires are in constant contact with the power source. This can be done by adding an ordinary switch (tumbler) to the network and soldering the wires to the battery poles directly. The device will become more reliable, it will be more convenient to use it, and if it is not needed, you can always turn it off by opening the circuit with a switch so that the battery does not run out. But how do you solder the wires to the battery so they don't fall off after five minutes of using the device?
Tools and consumables needed for soldering
In order to carry out reliable soldering of wires to the battery poles, you need the necessary set of tools. Since soldering a wire to a battery is a more difficult task than just soldering a pair of copper wires together, we will do everything exactly with the instructions below. In the meantime, prepare everything you need:
- Ordinary household hand soldering iron. They will solder the wires to the battery poles.
- Sandpaper or file to clean the tip of the soldering iron from slag and soot.
- Sharp knife. They will strip the wires if they are braided.
- Flux or rosin. Which flux for soldering is suitable in this case? HereLet's not rack our brains, let's take a simple soldering acid, it is sold in any store selling radio products. Well, rosin, although it often differs in color and shade, is always the same in properties.
- Flux brush.
- Solder. It can be purchased at the same place where the flux.
Solder the wires to a regular battery
So, how to solder wires to a 1.5V battery? This task is not difficult if everything you need is already at hand. We act according to the following instructions:
- Before turning on the soldering iron, clean its tip from scale. We do this with a small file or sandpaper. When the tip of the soldering iron shines with virgin metal, the process can be considered complete.
- Turn on the soldering iron, placing it on the stand, and wait until it warms up to the required temperature. We try the glow of the tip on the solder threads. If the solder melts on contact, soldering can begin.
- In order for the soldering to be strong while the soldering iron is heated, you should pre-treat the surface of the battery, to which we will solder the tip of the wire, with flux. This is done with a special brush. Today's batteries are made from alloys that don't hold solder very well. By treating the surface of such alloys with soldering acid, we will provide a stronger solder. You should also process the edges of the soldered wires. In the absence of a brush, you can use any stick. It is enough to apply a drop of acid, and the surface will already be considered treated.
- After applying the acid with a heated soldering iron, apply a layer of solder to the battery poles. We do the same with the ends of the wires.
- In the case of rosin, you will first have to tin the surface, and clean the ends of the wire from varnish. But it is safe to say that even if you know how to properly solder with rosin, this adhesion to the surface of the battery will be less effective.
- But if you don’t have acid on hand, but only rosin, we clean the surface of the battery, use rosin as a flux, applying a small part of it to the battery, and then take a little solder with a soldering iron tip and tin the place on the battery pole. The wire will also need to be tinned.
- With proper tinning, a strong film of solder is formed on the surface of the battery, to which it will be necessary to solder.
- We attach the wire to the flux-treated or tinned part of the battery, collect some solder with a soldering iron and solder the wire. We don’t pull the wire, we don’t move it, we keep it even and in one place, otherwise the soldering will not be strong.
- After the solder hardens, we do everything with the other pole of the battery.
That's it, the wires are well soldered to the battery.
Solder the wires to the crown
How to solder a wire to a Krona battery? Here, soldering is carried out in almost the same way as in the case of a conventional battery. The only difference is that in the Krona 9V battery, plus and minus are located side by side on one upper side of the battery. The nuances are as follows:
- In the case of flux, we process the Krona contacts from opposite sides with acid. There we will solder the wires.
- In the case of rosin, you will need to tin the Krona contacts, and also from opposite sides. Why opposite? Because in this case, the risk of a short circuit between the wires is practically reduced to zero.
- The Krona 9V battery has contacts (poles) that are very inconvenient for soldering. At the top, they open in breadth, and therefore for high-quality tinning and soldering on the side of such a contact, it is necessary that the tip of the soldering iron be narrower or pointed.
In general, the whole process is similar to the previous one. We process the contacts and edges of the wires with acid (or tin in the case of rosin), press the wires to the contacts, take a little solder with a soldering iron and solder. Process completed.
Batteries square 4, 5 V
It is even easier to solder wires to such batteries. They have flat folding contacts that can be easily tinned. And soldering to them is easier and faster. The main thing is not to move the wiring during the soldering process. Otherwise, they will simply come off.
Here you can not hold the wire at all, but wrap it around the plane of the contact strip. And then, after typing the tin with a soldering iron, soldering.
Batteries type "rechargeable"
Batteries-it is better not to solder the batteries, but to make a special container for them, in which the contacts of the elements will be in close contact with the pole contacts of the container. The material of the battery-accumulators consists of alloys that can be soldered even worse than ordinary lithium ones. But if you are very impatient, then soldering is carried out, as in the case of a conventional 1.5 V battery, just use flux, not rosin. Plus, soldering should be done as quickly as possible, reducing the touch of the soldering iron to the poles to a minimum, since such batteries are afraid of overheating.
Conclusion
Of the two options - rosin or flux - it is better to choose the flux. It will provide soldering greater durability and reliability. Such soldering will not fall off even if the device is used very often. The only caveat is that the acid fumes released during soldering are very harmful, so it is not recommended to inhale them, and after the procedure, you should wash your hands thoroughly.
