Batteries - autonomous and portable current sources capable of supplying the energy to the current consolidating devices in the absence of a stationary power grid.
Energing and components of nutrition elements predetermine their capacity, voltage and other operating characteristics.
At the same time, the batteries often need to be purchased separately from the device used, because They are not included.
This means that before operating the device, we will have to choose, buy and insert new batteries.
About how to do it, we will tell in the article.
In order to insert batteries, we need to take advantage of the next step by step instructions:
In order to power the device-consumer with the necessary amount of energy, find out which type of batteries is used in it.
When the type, shape and size of the desired current sources are known, go to the store and purchase the desired batteries.
For example, it can be a finger cylindrical Battery AA (one or 2).
Here they have to buy them.
Turning to the seller, it is worth making a choice between saline, alkaline, batteries.
We didn't write about it once on the pages of our site site, therefore, there should be no problems.
With the possibility of choosing between cheap and expensive batteries, it is recommended to take elements of more expensive or higher than the average rates.
Ideally (for the power consumption of frequently used and powerful devices, like a camera or player) it is better to buy batteries. If we talk about a low-power calculator or hours - one-time battery is enough completely.
Buying new batteries, feel free to demand seller's consultation, ask about the expiration and capacity. Also, pay attention to the battery labeling.
The first letter indicates the chemical composition:
The second letter in marking is the form of the current item:
When the labeling of power sources begins with the numbers - it means the number of batteries collected in a single case.
For example, 6F is 6 flat batteries wrapped with a common case. What is being done to increase the total voltage.
Figures at the end of the marking is the battery radius.
When new and suitable batteries are bought, we have to carefully examine the device of their inserts. Find the desired compartment is not difficult, visually inspected the device-consumer, finding the desired cover.
More often such battery compartments are hidden from the back or lower side of the current consuming apparatus (hours, calculator, flashlight, etc.).
At the same time, it is also possible to meet a visual and visual scheme for placing batteries in compartments.
In some cases, such compartments are closed with covers and are fastened with single screw bolts. It means that a screwdriver will need to access them.
To determine the polarity of the battery and its positioning in the compartment, carefully study the housing and terminals. On the negative side of contact in the compartments, there is almost always a spring.
We see the spring is the side "-" (flat side of the battery).
The convex end of the cylindrical batteries is their "+".
Moreover, the polarity necessarily indicates the battery pack or the label.
Note: On flat, disk, push-button and pill batteries plus is located on the flat side! And the convex end here is minus!
Following the scheme, instructions, instruction manual, insert new batteries in the compartments, withstand polarity.
If the power is and everything works - the cover (battery compartment) can be closed. If no power - proceed to identify errors and causes faults.
For example, users are often confused by polarity, hastily replacing batteries in violation of their operating circuit.
To power the powerful photographic equipment, it may be insufficient energy of salt and cheap batteries.
In this case, the device will also not work.
Be careful!
This battery box is bought by me for alteration of the radio-controlled machine. Crawler HB-P1801. This purchase is a specific thing, it will be useful not to many. And for the most part, the review is planned not so much the purchase itself, but its further use. There are many photos, little text. Caution, the review contains materials of dismemberment, as well as frames that may seem perturbative, unworthy or unreasonable and illogical for some.
If you, then noticed that it is used for its nutrition, 4 AA batteries (in the people of finching batteries) 
I do not know the amperes real in this spike, but even if the real, 700mAh is still small. Of course 20-25 minutes drive to native battle is not enough, but if you can increase this time, why not try.
At first, I wanted to solder several batteries available in stock, with a more tank, and make a second spare battery. But then I realized that I didn't really want to spoil 4 batteries. Therefore, I decided that it would be more correct to remake the machine itself.
Battery compartment has a stock in size, and the most correct solution was to buy and insert compartment for 4 batteries. 
Which then I can safely charge the existing charger separately from the machine.
At first I was looking for a similar compartment among acquaintances, who have children. You could pull out of broken toys. But unfortunately, it was not possible to find a box for 4 batteries anywhere. I had to buy.
Search for Ali, issued a lot of results. Chose the cheapest one.
From the moment of ordering until the receipt was exactly the month. November 25 bought, December 25 received.
It was packed in a piece of foam rubber, wramed with scotch and stuck in a paper envelope. Fortunately, nothing suffered (and and what is it likes to suffer?)
Case ordinary. Under 4 batteries. Connection sequential. 
Plastic thick. There are inscriptions denoting + and - and also applied the image of the battery to be seen how this battery is correctly inserted. 
FROM back side there's nothing.
Wires have a length of 15 cm. 
For my needs, this is more than enough.
Batteries hold well: 
Sequential connection 4 of batteries 1.2V gives 4.8V, which just consumes CRAWLER HB-P1801 
Well, now description Alteration:
For alteration, we need the following items:
Soldering iron. The most common. I have such a farm here: 
So what soldering iron without rosin and tin? 
Well, there was still a cross dilapidation. But she is very shy, and flatly refused to be photographed.
In the process of alteration, a bear really helped me.
Open care Impressive and pregnant not to watch!
In the release of the channel "Master Bobrov" will be dealing with homemade compartments using a plastic bottle. In homemade, where you need to connect batteries or batteries, usually use compartments. To carry out any experience, make a small handicap or mobile device. Many options. Sometimes to acquire these compartments is difficult or the device is so simple that even buying is not appropriate. And then do it yourself.
Suppose from paper, on patterns, plastic cases, springs, etc., many options. But sometimes there are no springs and contacts. Drew attention to the elasticity of plastic from plastic bottle. And we will use this property to connect batteries.
Lot different optionsand first show the simplest homemade. Simple flashlight - LED and power supply. How to connect a tablet? It's just done. A piece of plastic from a bottle is cut out, folds in half and is fastened with a stapler. It remains to make fit pictures, cut out with scissors. You can immediately fasten the wires immediately on the fit pictures, but now some of the presses are enough to connect the LED. We insert the battery, the LED and switch to serve as a strip of plastic from the same bottle. Simple design. During a minute you can make a small cradle.
Now connect the battery 18650 using the plastic from the bottle. If you bend PET tape once, then it is already well spring, and if you bend twice, then spring and presses much stronger. Bent PET tape and turned out to fit for contacts. Insert wires, climb scotch and connect. It remains to connect the wires and slaughter with scotch. Make two holes in PET ribbon and skip the wire and twist and get contact. We make holes with lighter and paper clips. Soldering iron faster. There is a lack of plastic from bottles - it is difficult to glue, only soldering, which is sometimes inconvenient, since plastic under the temperature is still seated (heat shrink).
We are made simplistic, just through the hole we skip the wire and bend. Watch your scotch. Well presses. You could just stick the wires. Problems with pulling the wires and waste of contacts are minimal. Sometimes use ready-made plastic boxes as enclosures, inserting such fittings.
For the case, you can use a blister package from the batteries. Add footbrips there or compact paper. Prints are easy to make PET ribbons. It remains to connect the wires, jumpers can be made foil. Thus, from the package it turns out a simple panibank on 4xa. Regarding the manufacture of compartments on patterns.
It turned out compartments on one battery or battery. It is convenient to use them, but it is not convenient to do from the plastic from the bottle. It was 15 minutes left for each compartment. On the pattern for battery 18650. Contacts, fitness, and through the slits, the PET tape case is pulled. It turns out good, but hard to do. Let's show this pattern. Plastic springs strongly and it's hard to do from paper or better cardboard to make much faster and more convenient. Such housings try not to do. Make easier, closed.
How to just make a compartment for several plastic batteries from the bottle? Cut a strip of a width of a little less than a length. We take two and just wrap. Minimum two full turns. Excess just trimmed. It turns out not very tight, but just sweat and seals. We bind scotch tape. Climbing strip in accordance with the width of the future compartment. And just inserted between twist twists. It is already more denser. The springs are made on both sides, turning the strip three times. On the one hand, you need to make a jumper. Jumper make a stapler, and you can simply strip foil. To brand everything use PET tape. If you need to quickly, it is necessary to finish the contacts, insert the batteries, if you need to be sealing and wrapped with scotch.
We skip the ribbon between the turns and bend inside. On the second spring it was necessary to make contacts. I missed the ribbon between the turns and hated inside. Ribbon through twist coils on the other hand. Insert the batteries. Tighten on one side. We stretch the ribbon on the first side. We drag on the tape and press the approach, fix it, bending the tape outward. The compartment is ready.
Connect the LED. Install the switch - strip. The principle is quite simple and can be scaled. Three - a pyramid. Four better to make a cube. Strengthen the side of the strips and or compact the batteries. So it will be possible to place not only in parallel, consistently. So connect one. Or flashlight on two tablets. Holder or compartment make it easy to do with your own hands using a screwdriver. Plastic from the bottle as springs or presses. Depending on the task and availability of materials, you can either make compartments yourself or better to buy. I hope this information was useful, it may be useful.
nIK34. Submitted:Another option to manufacture a battery compartment for lithium accumulators of size 18mm * 65mm.
Text here will be not enough, because Everything is perfectly seen from the pictures that were taken from some "imported" site.
So.
A sheet of hard plastic, for example, a getinax or textolite thickness of about 1.5 ... 2 mm. The efforts of the springs of contacts here will be quite large, therefore, in thickness, especially end panels, it is not worth saving.
Generally speaking, the author of the construction sprinkled the small deepening in which contacts are located, which can be seen in the photo above. But you can do without it. It is better, of course, somehow consolidate contacts, for example, glue, so that they do not chop on the flat surface of the end plate.
Battery contacts. In Russia, buy them, unfortunately, is problematic, but, in the end, they can be made from ordinary tin.
Use minus contact in the form of a spring, as they usually make in battery compartments for conventional "fingers" aa or aaa, in this case it is undesirable, because The currents that give a lithium battery can be much more than NimH. And therefore the spring contact, having a sufficiently large resistance, will heat up badly, which is bad.
If the alleged currents are small, then you can put a spring contact.
In partitions, it was done half a length and then these two parts are connected to each other, as can be seen in the figure below.
Then, in the longitudinal partitions, the excavations are cut down so that in the future it can be convenient to extract batteries inserted into this battery compartment.
We glue the longitudinal partitions and end parts of the battery compartment.
Battery compartment after gluing.
Also, it is desirable to strengthen the adhesive joint with a wire tie, which is visible in the photo below. Enough, as can be seen, only two ties to the side.
As a result, we get a very neat battery pack.
The weight of the resulting design with batteries is shown in the photo.
