The charge voltage of lithium ion batteries. How to charge Li-Ion batteries: Tips. How to charge Li-ion battery screwdriver and other important rules for its operation

Today, one of the most popular battery formats for various electronic devices is 18650. It requires the proper circulation during operation. The durability and functionality of this power supply depends on this.

How to charge the battery 18650, you should consider in detail. This will help to understand the advice of specialists.

general characteristics

Today, many sizes are used and one of the most popular is a battery of type 18650. It has a cylindrical shape. Externally, such a battery resembles finger batteries. Only the presented view is slightly more in size than the usual devices.

In the course of operation, necessarily the question of how to charge the battery 18650. This is a simple procedure. However, refer to it with full responsibility. The durability of the use of the battery depends on the correctness of the charging.

The batteries of the presented type are used today to power laptops, as well as electronic cigarettes. This made presented sizes popular. Also, such batteries are installed in flashlights and laser pointers. Most often, the devices presented are produced by lithium-ion type. This type of batteries proved its effectiveness and simplicity during operation.

Features

Considering how to charge the 18650 battery for a flashlight, electronic cigarette and other devices, it is necessary to describe the principle of its operation. The presented sizes are produced in the category of lithium-ion batteries. It has minor dimensions. The height is only 65 mm, and the diameter is 18 mm.

Inside the device there are metal electrodes, between which lithium ions circulate. This allows you to produce electricity To power the equipment. With a low or high charge on one of the electrodes, more ions are formed. They grow on the material by changing its volume and characteristics.

In order for the battery to work for a long time and fully, it is necessary to prevent the appearance of a deep or too high charge. Otherwise, the device will quickly fail. Depending on the nominal battery rates, special types of charging devices are used.

Battery protection

Today, the presented varieties of batteries are available complied with a special controller or have a manganese. Previously, there were batteries without protection. How to charge the battery 18650 correctly in this case, it was necessary to know for your own security.

The fact is that the device in which there was no special defense, it could strongly overheat with an incorrect or too long charging. In this case, a short circuit could occur and even ignition or today the use of such structures has sunk in the fly.

All lithium-ion type batteries have protection against such negative phenomena in their design. The special controller is most often applied. It monitors the battery capacity. If necessary, it simply turns off the battery. In some types of structures, a manganese is included. It significantly affects chemical reactions inside. Therefore, such batteries controller is not needed.

Features of charging

Many buyers are interested in how to charge the 18650 Li-ion battery (3.7V). You need to familiarize yourself with the features of this process. He is quite simple. Modern manufacturers make special devices that control the battery charging.

Lithium-ion batteries have practically no memory effect. This provides a number of rules when charging and operating batteries. The effect of memory is the gradual decrease in the battery capacity with an incomplete discharge. This property was characteristic of nickel-cadmium batteries. They needed to discharge completely.

On the contrary, do not tolerate deep discharge. They need to be charged to 80% and discharge up to 14-20%. In such conditions, the device will serve as long as possible and productive. The presence of special boards in the design allows you to simplify this process. When the capacity level drops to a critical value (most often up to 2.4 V), the device turns off the battery from the consumer.

Holding charging

Many buyers of various electrical engineering are interested in how to charge the 18650 Li-Ion battery (3.7V, 6800mAh). This process is carried out using a special device. It starts charging at a voltage of 0.05 V, and ends when maximum level 4.2 V. Above this value, the battery is not necessary to charge the battery.

You can charge the batteries of 18650 current 0.5-1a. What he is more, the faster the process passes. However, more smooth current is preferable. It is better not to speed up the charging process if the battery does not need to be used urgently.

The procedure takes no more than 3 hours. After that, the device will turn off the battery. This prevents its overheating and failure. Available for charging devices that cannot control the flow of this process are presented. In this case, the user must follow its execution. Experts recommend purchasing devices that themselves manage the process. This is a secure method.

Options

Batteries with different capacity indicators are available. This affects the duration of the work and the process of charging. Low capacity has a battery 1100-2600 mAh. The most popular in this category are Ultrafire products. This manufacturer manufactures high-quality lights. Therefore, consumers have reasonably the question arises on how to charge the battery 18650 Ultrafire.

In this case, it should be noted that the devices with a capacity of up to 2600 mAh need to be charged with a current of 1.3-2.6 A. This process is carried out in several stages. At the beginning of charging, the battery enters the current, which is 0.2-1 from the size of the battery capacity. At this point, the voltage is maintained at about 4.1 B. This stage lasts about an hour.

During the second stage, the voltage is held at a constant level. For some manufacturers of charging, this procedure can be carried out using AC. It should also be taken into account that in the presence of a graphite electrode in the battery design, it cannot be charged with a current more than 4.1 V.

Varieties of chargers

There is a simple technique, how to charge the battery for this you need to buy a specific type of device. There is a large selection of charging equipment for batteries of this type. The simplest and inexpensive is the device for one battery. The current level in it can reach 1 A.

Instruments in which several batteries can be placed immediately. Most often, such designs are equipped with an indicator. Some models can also be used for other varieties of lithium-ion type batteries. Their planting sockets have the appropriate design. Such devices differ acceptable cost and high functionality.

Also available universal chargers are presented. They can charge batteries not only lithium-ion type, but also other varieties. Such aggregates need to be properly configured before conducting the procedure.

Homemade instrument

Some users have the question of how to charge the 18650 battery in an emergency, when there is no special device at hand. In this case, it can be done independently. Sometime is old charger from the phone (for example, Nokia).

It is necessary to remove the shell of the wire and disconnect the wires minus (black) and plus (red). With the help of plasticine, you can attach the bare contacts to the battery. It is necessary to observe the appropriate polarity. Next, the device includes network.

Such charging can last about an hour. This will be enough enough to ensure that the battery can provide the right work of the technique.

Specialists recommend responsibly referring to the charging process and its durability depends on it. Discharge the battery completely and charge it up to 100%. It is better to limit the charging process to a level of 90%. However, periodically (once every three months) can be carried out full discharge and complete battery charging. This is necessary to calibrate the controller.

You can store a battery long enough. For this you need to charge by 50%. In such a state, it can be about a month. At the same time, it should not be too hot or too cold. The ideal conditions are considered to hold temperatures at 15 ºС.

Having considered how to charge the battery 18650, you can maintain and operate the battery correctly. In this case, its use will be significantly longer.

One of the most important criteria for the correct work, good efficiency and long service life of the battery is considered its correct charge. This applies to all batteries all the batteries, be it massive industrial rather big capacity, or tiny batteries in your tablets or phones.

Most of the batteries have the so-called "memory effect" in one extent. It is expressed in the fact that the batteries "remember" the limits of the operated capacity.
For this reason, in fact, the preparatory training of batteries is carried out. Due to the presence of the above result, it is not recommended to charge not yet sitting until the end of the battery.
In this case, rechargeable batteries among other things "will remember" the limits to which they are given the opportunity to reach.
The result will be the reduction of the physical capacity of the batteries, their rapid discharge, the diligence of the service.

When purchasing new batteries, it is recommended to produce their "training". It consists in full discharge / charge the batteries itself. Speaking easier, it is necessary to discharge batteries, then charge them "until the stop". The process is repeated 3-4 times.
Subsequently, the battery procedure will serve significantly longer. With all this, you seem to "accelerate" them, increase the potential container to the limits.

The less time the battery is discharged and the less deep is each separately taken its discharge, the longer the service life will be.

How can I charge the battery?

• The optimal version is charging with a constant current 0.1 - 0.2 C for 6-8 hours.

• Fast charge - for 3-5 hours. The current is about a third of the nominal.

• The accelerated charge is performed by a current equal to the value of the nominal capacity of the battery itself, it is possible to warm up and the destruction of the item.

Such batteries are used in your phones, tablets, laptops.
Standardly received a shock that their voltage is 3.7 volts, but one element may have a voltage in the range of 2.5 (discharged) - 4.2volt and this is usually maximum.
On average, their resource 1000 - 1500 cycles charge-discharge
As a rule, if the battery is discharged below 2.5 volts or charge more than 4.2 volts - the battery fails. To protect from this in most of the batteries of this type there is a security board that turns off the battery bank when the voltage output beyond the norm.
A charging device should be able to charge batteries up to 4.2 volts and automatically disable charge.

A newer variety of lithium-ion batteries with greater energy density and a smaller size (element thickness from 1mm! With significant flexibility). Use up to minus 20 degrees. And the complete absence of a "memory effect".
The batteries of this type are swing and fire-dangerous, when recharging, fast discharge or closing the element. Therefore, all elements are equipped with a built-in charge controller and discharge board.
The number of working cycles in a wound 900 full charge-discharges. It should be noted that a deep discharge can completely remove the battery. It is recommended to discharge such batteries for no more than 40% of their maximum container.
Charging is made by voltage 4.2 volts per element, current in 1C and the charging process is completed at a current 0.1-0.2c. Charge time is about 2 hours.

Often your performance as ordinary finger batteries. The supply voltage of one element is 1.25 volts.
Service life, approximately 200-500 cycles charge-discharge. Self-discharge: 100% per year.
In a minor degree, the battery owns the "memory effect", it means that if the battery is for a long time, the month - two, it was not used, then it's nada to make a full cycle of discharge - charge.
The charge with a small current extends the battery life, so the most optimal mode of operation will be charged current at 0.1 from the nominal battery capacity.
Charge time - 15-16 hours, according to manual instructions.
The charge of such batteries is better to do with a constant or impulse current with very short pulses of the negative value (asymmetric current) - this will help to eliminate the problems with the "memory effect"
The charge voltage on the element is 1.4 - 1.6 volts, and the voltage of the fully charged element is 1.4 volts. Discharge to produce up to 0.9 volts, below it is undesirable.

Most produced in the form of finger batteries and small-sized disk batteries (pills)
Power voltage of one element - 1.37 volts
This type of self-discharge is about 10% per month.
They are subject to the "memory effect" and such batteries are not recommended to be used in buffer mode. After a long inactivity of such a battery, you need to produce a circuit-discharge cycle of approximately the nominal container. The discharge cycle with 1.36 volts to 1 volt is not recommended below.
Rated charging current in the range of 0.1-1 from the nominal container of the element.
It can be used at temperatures up to minus 50 degrees.

PB (lead-acid) battery

The most common type of battery energy.
Most safe method Charging looks like this, first the battery is charged with a constant current, and after receiving the desired voltage, this voltage is maintained on the battery.
The maximum charging current 0.2 - 0.3 from the nominal capacity of the battery. The optimal charge current is 10% of the nominal, it is safe and is punitive for the battery.
The maximum charge voltage should not exceed 13.8 volts. With a rapid charge, it is allowed to 14.5 volts.
Total time complete charge It should be in a rayan 5 - 6 hours.
The minimum charge temperature is not lower than -15 ° C

AGM battery

In contrast to lead-acid, they contain absorbed electrolyte, and not liquid as in acidic, edible glass tissue gaskets between lead plates are impregnated with electrolyte. And this gives them a number of advantages: resistance to large vibrations, confident operation, even with minus 30 s Although the voltage slightly seats, hermetic design and more secure charging.
Number full cycles Charge-discharge from 500 to 1000 depending on the model brand.

Among the Li-Ion Akb is particularly popular with the battery 18650. The scope of its use is very wide: such elements can be found in the battery ligaments of laptops, screwdrivers, in devices such as Mehmode, intended for the power supply of electronic cigarettes or domestic flashlights. They can be found in portable tubes stationary phones. Also recently, the remission of the screwdriver with lithium batteries of this type is gaining popularity, due to the fact that they work much longer than the elements of the past generation.

When an 18650 battery is inserted into a particular device, how to charge it right and how much time - questions that will task any responsible owner of household appliances with such batteries.

A little about lithium-ion batteries

Since this AKB is a type of Li-Ion batteries, it should be mentioned that these elements are now quite high. For lithium batteries 18650, as well as for other battles with lithium in composition, characterized high level of capacity and ability to keep charge for a long time .

By the way, this battery has gained its popular on the Internet due to its parameters: it is 18 millimeters diameter, and height is 65, which is quite convenient and compact, given its ample opportunities.

Previously, most of these batteries were distinguished by increased explosion hazard, in the literal sense of the word. The reason was a certain type of chemical reactions that occurred during overheating of elements under conditions of high temperatures. There was also a mechanical closure inside one or more "cans", which resulted in ignition.

Now all accumulators of this type are equipped with special devices with a controller in the circuit, That does not allow to allow critical overheating and explosion. This device can be found in any 18650 battery, if you carefully open it and see what is inside.

If such elements do not use for a long time and leave discharged, they can quickly lose their properties. Therefore, charging 18650 should be carried out regularly, with this, a certain scheme must be followed. For example, you need to know what current to charge Li-Ion, or in which the voltage should be charged 18650 so that they do not have overheating and premature failure.

How to charge AKB 18650

Before moving to the theme of the charger, you need to designate the basic charge principles for lithium batteries 18650.

"Charger" is always sold much, and many of them are universal, but the basic rules for lithium-ion batteries should be such:

• The start of charging is carried out with a voltage of 0.05 V, and the process should be completed when the U to 4.2 is lifted. It is important to remember that this is a permissible maximum safe for batteries.
• Charge current: It is allowed to charge the battery with indicators of 0.5 A and 1 A. With 1 and the process will leak much faster, but since more smooth current is recommended for any batteries.charge li, the best indicator is 0.5 A. Of course, if the batteries need to be charged urgently, the current level can be enhanced to 1 A. But in normal cases should not be accelerated Charging.
• The time during which is charging Battery, should not exceed three hours - not to damage the inner chemical structure Akb, causing overheating.
• If the acquired device is equipped automatic system Charging control , It "knows" itself about how long the battery should be charged.
• On some chargers (both purchased and homemade) there is no such control , Therefore, in this case, you will have to control the whole process yourself.

What device should be used

Popular electronics stores offer a wide selection of suitable charger. In the cheapest, with a current level of 1 amp, you can put one battery of the 18650 model.

There is a more advanced option with two "nests" for elements, with a maximum voltage rate of 4.2 V . This charge for 18650 is already a bit more expensive, but it is equipped with an indicator of the charging level, which controls how much time the battery should be charged.

There is still a similar option, with the same characteristics - you can insert not only elements 18650, but also models 26650.

You can purchase I. Universal charger which is suitable for all types of batteries, starting with nickel-cadmium and ending with lithium-ion.

Chargers are quite enough, and most of them are equipped with indicators, and a security system that eliminates the need to constantly check the voltage or current level. Of course, the quality of the charger directly depends on how much money will be spent on it.

If there is a skill, time and desire not to spend money on the purchase of a charger, it is possible to make it yourself and independently - it will be necessary to do this for this.

How to make charging for lithium-ion batteries yourself

Charging for batteries 18650 with your own hands make it quite real. The main thing is to know the basic principles of the electrical circuit and the indicators in which the AKB can be charged.

Method number 1.

The easiest way to recharge the battery in emergency conditions is to simply use an old, but working charger from the Nokia or Samsung phone. Fortunately, current and voltage parameters in such chargers will not harm AKB.

The scheme is simple, and even a schoolboy will cope with it:

1. Charging needs to free the wires from the binding of their shell, disconnect them on the plus and minus pole . Usually red wiring is a plus, and black is minus, so that it should not be confused.
2. Now you need to simply attach the battery to the bare contacts of the plastic .
3. Observing polarity, connect the device to the network, or the computer - And the element can be calmly charge, after time after the process.

When asked how much to keep the battery on such an express charger, the answer is simple: an hour will be enough In order to restore the parameters of its container.

Method number 2.

How to make charging more perfect type? Here the scheme may be a little more complicated, given what will have to take advantage of the priestly tools in the form of a soldering iron, solder, glue and flux. However, the most important element that will need a home charger can be purchased on Aliexpress - charge fee. Therefore, to assemble such a device for independently of great work will not be.

The scheme is: plata solder to pre-prepared plastic boxing with two wiring ("Pl.yUS "and" minus "). In boxing and there will be a battery during charging. Boxing itself can be reached from any household applianceFataling: It can be an old charger or toy. The main thing is that boxing sizes correspond to elements 18650.

With soldering problems should not have - the board shows the places where wiring should be soldered. . In addition, the fee itself is already equipped with two lED indicators Red and green, which will signal the level of charge.

Fee should be gently glued to the box at any convenient place, then solder wiring, not forgetting to observe polarity. Before soldering the wire you will need to slightly clean and forbridge from the help of rosin and drop on a fee of a little liquid flux (or solder). It is important to ensure that the wiring closures have not occurred.

Such a scheme allows you to make a simple, but reliable and very cheap charger in a short time. Now it remains using the USB connector to connect it to a computer or network. - And you can charge the batteries. How to charge them properly - already clearly, the main thing is to follow the indications of the indicators. Green color Always signal the charged state of the elements.

It is not necessary to often carry out these batteries popular "pumping" in the form of several cycles "charge-discharge". It will be better to follow the level of their charge: it should not exceed 90%. This is such a scheme of actions will help extend the life of any type. lithium batteries And maximize the indicators of their container.

Also do not allow their deep discharge - Otherwise, restore the previous parameters will be very problematic. In order to be confident in the purchase of high-quality elements, you should always pay attention to the time of their release. If they are more than three years old - can be considered overdue.

When you have to constantly deal with a particular portable technique, you should always know how to charge the battery correctly. If it is 18650 battery, how to charge it as much as possible? Knowing the main indicators of current and voltage will not be difficult to carry out the charging process without prejudice to the batteries. And if there is a need and desire, a simple charger can always be made with your own hands.

To charge lithium-ion batteries when there is no special charger. Such ankb is very common, just buy a memory for its competent charging (or wants) not everyone, often chargeing them with conventional controlled BP. Let's look at how to do it.

Take for an example lithium-ion battery from Panasonic NCR18650B at 3.6 V 3400 Mah. Immediately warn that charging this type of batteries is quite dangerous if you do it wrong. Some mockery samples are kept, and some Chinese "superconduct" do not have protection and can explode.

Akb with protection

The secure battery must have the following protection elements:

• Ptc., overheating protection and, indirectly, for current.
• CID, pressure valve, turn off the cell if the pressure is high inside, which may occur due to too powerful charging.
• PCB, Excessive discharge protection fee, reset is performed automatically or when placed in a charger.

In the above figure shows how the bank protection is arranged. This design is used for any type of modern protected lithium-ion batteries. PTC and pressure valve will not be visible, as it is part of the original battery, but all other parts of the protection can be seen. Below are the options for performing electronic protective modules that are found in standard round Li-Ion batteries most often.

Charging lithium

You can find a typical scheme and charge principle on the NCR18650B battery in the datasheet. According to the documentation, charging current 1600 MA and 4.2 volt voltage.

The process itself consists of two stages, the first is a permanent current, where it is necessary to set a value of 1600 mA of DC, and when the battery voltage reaches 4.20 V, the second stage will begin - a constant voltage. At this stage, the current will fall a bit, and about 10% of the charging current will come from the memory - it is about 170 mA. This guide Refers to all lithium-ion and lithium-polymer batteries not only 18650 types.

Manually it is difficult to set and maintain the above modes on the usual power supply, so it's better to use special chips designed to automate the charge process (see Schemes). As an extreme case, it is possible to charge a stable current of 30-40% of the total (passportable) capacity of the battery, having skipping the second stage, but this will slightly reduce the resource of the element.

Battery 18650 B. modern society Quickly becomes popular. Its main plus is a multiple charging up to 500 times. The form he is similar to the finching battery of the type "AA". Dimensions depending on the degree of protection vary. In this article, consider this device in more detail.

Battery 18650.

Many users sometimes confuse this battery with a conventional 1.5 volt food element. But it is wrong, its voltage is much more. Yes, and the dimensions are different.

18650 Battery What is it?

This is a rechargeable battery with a minor charging. Some species have a built-in port and the ability to receive a charge from the USB connector. This solution is very convenient.

Thus, from the above, the definition becomes clear what kind of TR18650 batteries.

Battery characteristics 18650.

Below, we present to your attention the basic parameters of this power item.

Voltage

After analyzing a number of online stores was concluded. Most of the 18650 nutrition elements have 3.6 volts. But there are options and from 3.7 V. At the moment of complete charging, the voltage increases to 4.2-4.3 V.

How many ampere in the battery 18650

The strength of the current depends on specific model Akb.

So how much ampere in the battery 18650? According to some data, it contains from 0.5 amps and higher.

Battery capacity 18650.

The maximum capacity of 18650 batteries reaches 3600 mAh. The minimum is equal to 1500 mAh. Most often, the battery, high capacity, is used for quadrochopters and other energy-cost devices.

How to determine the battery capacity of 18650?

This parameter is determined using a special tester. You can also look at it on the label. Or measure the multimeter.

The internal resistance of the accumulator 18650 Samsung 25R, in room temperature conditions is 0.022-0.025 Ohm.

18650 injection batteries

Dimensions of this power source depend on the manufacturer and protection. If there are no protective elements, then the size will be less.

Battery sizes from Robitin by 3600 Mah:

• Length: 64.93 mm
• Diameter 18.20 mm

Thus, the size of 18650 is much more than an ordinary finger battery.

Colour

In the markets can be both the most common colors and exclusive. For example, you can meet a 18650 brown chocolate batteries.

The main advantages

1. Easy to maintain.
2. Small share.
3. Low self-discharge.
4. High energy density.
5. The 18650 battery does not have a memory effect.
6. Service life of 7-10 years.

Battery type 18650.

Allocate three main types it:

• Lithium-iron-phosphate, they are also called ferrophosphate, as well as LFP, LIFEPO4, IFR. (Lithium Iron Phosphate).
• Lithium Manganese Oxide. They are IMR, Limn2O4, NMC, Linimnco2, LimnO2, INR. High current.
• Lithium Cobalt Oxide). These include Licoo2, NCR, ICR. Have a high container.

The first type of batteries It is considered the safest. Their work is fairly stable and has a high efficiency. Have an iron phosphate cathode. This suggests that she has zero toxicity. In addition, the battery is tolerant to high temperatures.

Unfortunately, this type of batteries 18650 has no charge controller. With a strong deformation of the case, the battery data may explode or flame. But it happens in very rare cases. This type 18650 weakly sensitive to incorrect work. For example, a decrease in resistance.

Second Type Enough in demand by the consumer. Show themselves as consistently working batteries. Many manufacturers write that data type 18650 is safe. But in fact it is not quite so. They do not have a charge controller.

The main advantage of such batteries is working with low resistance for a long time. Compared to cobalt type, manganese serve longer. The capacity and the strength of the current is balanced. The maximum charging current is 4.2 volts. You should not neglect the strength of the current from this may worsen the battery and an explosion occur. The current level affects the recharging time.

Consider a discharge of 2.5 volts. Anode is made of graphite. With low resistance and high current, gas can exit. These batteries are high quality and recommended in widespread use.

Third type has itself large capacity Unlike the above listed. Their system can be unpredictable. These rechargeable batteries 18650 cannot be charged quick charging. It is forbidden to use in devices that provide a larger load on the battery.

If you know that a certain technique quickly discharges the Li 18650 battery, do not put them there. Otherwise, not avoiding the ignition of the electrolyte. The main device in which they are applied to this moment - These are electronic cigarettes. Charging voltage 4.2 V. If you increase the voltage can recharge, and this is undesirable. You can not use powerful charging - it may worsen the chemical composition of the battery.

Thus, only that it has been described what are 18650 batteries.

Decryption of battery inscriptions

Standards in marking, good accumulators 18650 No. Each manufacturer puts its marks. But there is still some decoding.

1) The very first sign means that this technology was developed by this battery (I - lithium-ion technology).

2) The next sign is a chemical composition, which made AKB (F / C / M / - iron phosphate chemistry, cobalt, manganese).

3) R - means a multi-charge battery 18650.

The number 18650 means the following form factor:

• The first 2nd digits of the diameter.
• The next couple says what length is this item.
• The most latter notifies that the battery has a cylindrical shape.

Letters / numbers are a special markup of the energy density (capacity). Each manufacturer writes it in its own way.

Options:

• Samsung InR18650-20R (lithium-ion battery with manganese chemistry, high-strength, 2000mAh).
• Samsung ICR18650-26F (lithium-ion battery with cobalt chemistry, 2600mAh).
• Panasonic NCR18650PF (NCR is a type of cobalt chemistry, it is a middle of the first and second option, or chemistry Linicoo2, without the use of manganese. Not suitable for existing types, it turned out some mixture. Positive side - increased energy density with low thresholds up to 2.5-2.75V). Linimnco2 chemistry is used. That is, this imr is highly currently made on the basis of manganese, but the creator left the same label.
• Sanyo UR18650FM - Sonya usually stamps the stamps on your own way. This is a lithium ion battery with a capacity of 2600 mAh.

What battery is 18650 better and how to choose it?

If you proceed from security reasons, then the best accumulators 18650 are phosphate lithium iron. They are not toxic, and to a lesser extent can explode. When the battery is needed for the lantern, suitable any a type. But remember if the charger is not reliable, the battery is better not to charge.

When choosing a battery 18650, decide for what purposes it is needed. If you are going to use it in the device by type of laptop, bicycle, cumulative battery, then it is better to prefer not to secure type. Such species produce Panasonic, Samsung, LG, Sony. We usually have flat side facets.

Protected batteries have a special micro board installed inside the housing. Such a tool allows not to give a battery recharge. In addition, protects against short circuit. In the lantern, this type is worth using if available serial connection Of two such batteries.

18650 accumulators with a large capacity of Panasonic 3600 (NCR18650G) and Sanyo 3500 MAh are well suited for laptops. The cheapest and challenges are Panasonic 3100 Mah.

When choosing, focus on the types of acb specified in the section above!

What is worth paying attention to?

• Rated current.
• What can be heating, as heats up.
• Voltage.
• Energy container.

Battery device 18650.

Inside and outside this battery has the following device:

1. Fuse.
2. Gasket.
3. Positive conclusion.
4. Toko puller anode.
5. Valve for pressure relief.
6. Isolation is usually from cellophane.
7. Positive electrode.
8. Separator.
9. Isolation.
10. Negative conclusion.
11. Case.
12. Negative electrode.

Typically, the 18650 battery consists of an anode made of copper and a cathode made from aluminum. Built-in electrodes are divided into a special separator. This unit has a porous structure. It is impregnated with electrolyte. Electrodes are carefully packed in a dense cylindrical case. Positively charged lithium ions, which are in the separator, penetrate the crystal graphite grille. This element is attached to the minus pole of the battery. On the plus there is an email potential.

Where plus the battery 18650?

Not so easy to determine where there is a negative conclusion. Very often appearance It is practically impossible to determine.

The polarity of the 18650 batteries is defined as follows:

• Visually.
• Tester.

A number of similar elements have a plus and minus marking. Sometimes the positive pole is where there is a wide black band. As in the figure below.

But when there is no color notation, pay attention to the ends of Li Ion batteries 18650. The protected end or pole with slots will be a plus. Accordingly, the opposite will be a minus. Just where plus there is a circular groove, a certain concave with the edge.

Thus, they figured out where plus, and where is minus.

The second option is to take the usual tester and in the voltage measurement mode to check the polarity. Red probe goes on plus, black on minus. If the scoreboard is an indicator with a minus just change the probe in places.

How to charge the battery 18650?

Recharge the Element of the 18650 Li Ion should be frequent. Otherwise, he may lose its former incision.

1. Execution of charging occurs from a voltage of 0.05 V, and it should be completed when the voltage reaches a level of 4.2 volts. So the battery will be safe.
2. Charging can be carried out at a current of 0.5-1 amps. Therefore, how to charge Li Ion battery 18650, now it is clear. The first value is the most balanced. The second will make the charging process faster. But it is not necessary to increase current strength without any need.
3. 18650 batteries should be recharged no more than 3 hours. Otherwise, chemistry may suffer. Well, if the protection is built. In this case, the battery will turn off.
4. It does not need the battery hardly discharged. Former characteristics will be problematic. From time to time it needs to be recharged.
5. For the first time, 5 charge cycles and 5 discharge cycles should be performed.

How to charge a 18650 battery without a charger?

Without a sub-folder, you can fill the battery with energy only via USB pores. To do this, your battery must have a special connector. Details in video.

Battery Charger 18650

You can charge this item with your own hands using a standard charger. Typically, a device with 1 socket is able to charge 1 amp strength of 1. A similar device will be convenient for those people who perform a charge once every 12 months.

Connecting the 18650 battery charging module strictly, observing polarity.

Those chargers that have 2 battery sockets from 4.2 V. If you increase the voltage of the battery will die. Fortunately, there is an indicator that follows the process.

In retail can meet mixed types of charges. They are designed for both accumulator 18650 and for ordinary nickel cadmium batteries.

Devices that have a high cost are more rich. They have a relay and all possible control indicators. Therefore, charging for lithium ion batteries 18650 will be more reliable.

What if 18650 is not charging?

1. Check the date of manufacture, perhaps its term is already dried.
2. Think how many charge cycles and discharge you have already done. If more than indicated in the characteristics of the battery, it has already served.
3. Check if the charger is properly. It is possible to grind a wire.
4. Pay attention to contacts. There is a possibility of disrupting the contact of the battery and a tin plate. The reason may be raid, rust or oxidation.
5. Check if there is electricity in the house.

These five items will help you understand why the 18650 battery is not charging.

How to charge a battery 18650 charging from the phone?

Below in the video set out the instruction as correctly can be done. That's what you need:

1. Mobile charging Tr 4056.
2. Soldering iron.
3. Wires.
4. USB wire with a suitable connector.
5. Charger for phone.

After collecting the device, it remains to connect it to the phone with using USB. cable.

But charging 18650 from solar battery It is possible if you create a special device outstanding the right current. But in reality will have to try to embody the design to life. There is no finished development yet.

Watch the video on how to assemble a cool battery with sunbashers.

Tip! It is best to buy a charger for 18650 Li ion batteries CV or CC.

How to make a charge charge charger 18650?

Charging for Li Ion batteries can be performed on the LM 317 chip. Below is a diagram and how it looks assembly.

The video presents an example of creating a memory for this power item.

How to discharge the battery 18650?

Perform a safe discharge. This will require:

• 12 volt incandescent lamp.
• 2 wires.
• Akb for discharge.

Now it remains to solder wires to the lamp and connect to our accumulator 18650. Smooth discharge will occur.

You can also perform a discharge by a special device that is shown in the video below.

The maximum discharge current can reach up to 35 A. But it is better that the myth is rather than reality. It is best to use gentle mode and discharge 1 amp current.

The discharge current should not be greater than 2 times the tank value (2C). For example, the battery, with a capacity of 2000 Mah, will be 4000 mAh. Voltage should not be less than 2.5 volts.

How to check the 18650 battery for performance?

An ordinary multimeter is used to check. This device measure the voltage and determine the battery element. The normal battery 18650 contains 3.6-3.7 volts.

If the battery at the time of charge begins to warm much, and its temperature reaches more than 40 degrees, it is better to get rid of it.

It is believed that at a voltage of less than 1 volt, the data of the battery must already be thrown away. But if he takes it to exploit the battery yet.

How to replace the 18650 rechargeable battery?

In reality, this battery is not much replaced. You can try to use 3-4 AA batteries. But they will serve a little. In addition, the voltage will vary very much. So be careful! Yes, and in the device body 3 do not fit, you will have to get a wire and cling to contacts.

There is a second name for this element of 168 A. But in fact there are almost no analogs of this battery. You can try more type 18700.

How to make a battery from 18650 batteries?

To do this, prepare the following:

1. The required number of batteries is 18650.
2. Wires or tin thin plates.
3. Connector for power output. Or just two wires preferably black and red.
4. The isolent or container in which the batteries will be securely fixed.

Assembling batteries from batteries 18650 is carried out according to the following principle. Negative ends need to be connected with positive. It is worth determined which connection is needed parallel or consistent. The first saves a place in length, but second In width. The figure below shows how the second connection looks like. This is a battery from a laptop.

Scheme of successive bonding battery.

Parallel connection:

For details, see the video.

Application of 18650 batteries

So, where are 18650 batteries used? This battery is used in different technical devices. Below are their list:

1. The battery 18650 is inserted into the flashlight.
2. It is needed for Waip or electronic cigarettes.
3. It can go like an external battery with interchangeable batteries of 18650. In fact, it is a plibank ( power Bank.) On accumulators 18650.
4. Quadracopters.
5. Radio-controlled toys.
6. Airsoft drives.
7. Electrical devices.
8. Laptops.
9. Screwdrivers.
10. Drills.
11. Players.
12. Electric bikes.
13. Portable handsets.

Battery braid 18650

At the time of purchasing this battery, you should not neglect the packaging. Case for batteries 18650 performs a protective function. Prevents from random moisture and touch with metal. In addition, in boxing, the battery 18650 is easy enough to endure.

The braid looks as follows:

How much batteries are 18650?

Rates for this device everywhere are different. It all depends on a particular company, the characteristics of the battery and the store itself.

At the moment, the price tag on batteries with a capacity of 3500 Mah fluctuates around the 1800 r. On Aliexpress, it is 1000 - 2000 p. But you know how to wait long.

Akb capacity of 2500 Mah costs 200 - 1400 p.

Difference 18650 from AA Batteries

The main difference is as follows:

1. The size. He can be more than a couple of millimeters. It all depends on the specific model.
2. Charge. The level of voltage is 3.7 volts. At the time of the accumulation of energy reaches 4.2-4.3 V.
3. Rechargeable type. That is, repeatedly recharges. Usually 500 - 1000 times.

If you want to replace AA to the 18650 battery, be sure to check the voltage. By connecting two AA type batteries, we obtain 3 volts. And this device gives about 3.7 V. Therefore, it is better to use it in flashlights and technique that can withstand the excess of tension.

They can replace three AA batteries or aaa type, but here again there will be no power. You need to think about which devices will work from reduced voltage. Radio receiver and player may well pull, but the engine or heating element will be weak to work.

Lithium ion battery 18650 is aging

The wear process occurs in independence from whether the Li ION 18650 battery is applied or not. There is such an opinion that in a few years from the moment of manufacture they should be thrown out. Once a year, the battery loses the charge of as much as 10%. Before you take a look in what year it was made.

Another minus is the inability to store for a long time discharged. This leads to damage. The aging depends on the temperature that surrounds them. They can work perfectly from -20 to + 20 degrees. Some species are capable of functioning at +50.

What does the secure battery mean?

As a rule, lithium ionic nutrition elements should have a voltage from 2.5-4.2 volts. That it is not deviated. There is a special defense. It is made in the form of a small board with radio elements. This device is attached to the negative battery pole.

The board protects against overload and lock. It solder to minus with a special metal tape. Such elements enter the market under various brands. This chip lengthens slightly this species Power sources. If there are two words Short-Circuit and Protection means the battery is protected.

There is also mechanical protection. It triggers when the device accumulates a large number of gases.

Table Characteristics 18650.

Battery repair 18650.

Periodically fails the protective fee. This electronic stuffing can be removed and continued to operate the battery.

Step-by-step action plan:

1. Remove the celofan shell.
2. After that, you will see the conductor coming from a positive pole to the chip. All this business is hiding under the minus. At the time of an emergency, the fee takes this contact.
3. Remove the board and remove the conductor. If you need point welding, you can shut down the sandpaper.
4. It is necessary to remove the shell to so much that the contact contact concerns the battery contact.
5. Now clog the tape or a special tape on the adhesive basis and can use.

After performing these actions, the 18650 battery will lose 1 millimeter.