There are situations when the charging that comes with the device has stopped working or the battery is so discharged that it needs to be "overclocked" for normal operation.

In this case, a universal charger - "frog" will help. It is suitable not only for a phone, but also for video cameras, GPS navigators and cameras, the main condition is that the battery is lithium.

Also, its capacity should not exceed 2000 mAh, current strength - 200 mA, voltage - 3.5-4.8 W.

There are three types of frogs:

• standard, powered from a 220 V network;
• automobile, powered from a 12 V network;
• computer, powered by a 5V USB port.

They are also automatic and semi-automatic. The main difference is that the former have three indicator lights, while the latter have four.

How to use a frog to charge a battery

There is nothing difficult in connecting a discharged battery to a frog. First you need to find out what the indicators located at the bottom of the charger mean. So, let's take a look at each of them:

• TE - testing for correct connection;
• CON - turns on after TE indicator in case of correct connection;
• PW - lights up when connected to a network;
• CH - flashes during charging;
• FUL - means that the battery is 100% charged;
• CO - it is necessary to press if it is necessary to change the polarity, if testing revealed a connection problem.

Now that we know the purpose of the buttons and the designation of the indicators, let's proceed directly to charging the battery. We take out the battery from the device and attach its contacts to the frog's contacts.

It doesn't matter how to connect, because the polarity is detected automatically. If the plus and minus match, the CON (connection) indicator will light up. We plug the "frog" into the socket, and after an hour and a half the LED under the FUL inscription should light up.

The state of charge is determined by the microchip. Although some argue that the device turns off when it is fully charged, it is still better to keep an eye on the process: the device is Chinese - a fire may occur if it is connected to the network for a long time.

For safety reasons, it is best to keep a plugged-in frog away from flammable materials.

Problems and solutions

As you can see, everything is pretty simple, but some difficulties and unforeseen situations may arise.

• After testing, none of the indicators came on. In this case, press the CO button. Did not help? Then you, apparently, made a mistake with the contacts, because there can be four of them on the battery, and you only need two - "+" and "-". If after the rearrangement no changes are observed, then either the charger has driven, or the battery is already inoperative.
• It also happens that the phone has not been used for a long time, and you suddenly remembered about it. The battery charge has already run out completely, for this reason the indicators will not light up. And then you should insert the frog into the outlet for a short period of time, no more than 10 minutes. Then you can charge the battery through your phone.
• When connected to a network, the FUL indicator may light up immediately. This means that the battery is no longer working.
• Another indicator of inoperability is fast recharging (5-10 minutes);
• The simultaneous illumination of the PW and FUL diodes indicates that the device does not come into contact with the battery. We need to check the connection.

That’s probably all that could be said about how to use the frog to charge the battery.

You can only add that the device is readily available in the markets and is inexpensive (about 200 rubles), so if for some reason you cannot recharge your device in a standard way, purchase a universal Chinese charger.

If your mobile phone is dead and you don't have a home charger at hand, you shouldn't despair. In such a situation, a "frog" for charging batteries will become a real find. Its main advantage is its versatility, ease of use, prevalence and low cost. It is suitable for batteries with different connectors. Consider the principle of operation and the rules for using a frog.

General device information

The frog is a simple device designed to charge the batteries of mobile phones of various models and manufacturers.

In addition, a "toad" can be from cameras and other small-sized equipment.

Outwardly, it looks simple and is a plastic box with a plug on one side and a special clip for contact with the battery on the other side. The design of the "frog" allows it to be used for batteries with connectors of different sizes thanks to the movable contact terminals.

The universal device does not require any special technical knowledge or skills. To use a frog, there is no need to think about how to properly insert a battery into it. She herself will determine its polarity.

Varieties of universal chargers

Today on sale you can find several types of devices of this type, designed for lithium batteries mobile phones and other small-sized equipment, different in power supply:

• from car cigarette lighter ;
• from USB port;
• from an electrical outlet .

Also, universal charging can be automatic and semi-automatic. The main difference is the number of indicator lights. Automatic machines have three, and semiautomatic devices have four. The automatic “toad” will itself determine the correct polarity, and the semi-automatic will require additional control of the correct connection using the buttons.

How to use the frog?

How do I use the universal device? Algorithm it the application is simple and the same for everyone. Can charge frog phone lithium battery , camera, camera, navigator, provided that it has the following characteristics:

• capacity no more than 2000 mAh ;
• current 200 mA;
• output voltage 3.5-4.6 V .

Charging the battery with a frog if it does not meet these characteristics will fail.

First, the battery must be disconnected from the technical device. Then it is installed in the "toad" so that the terminals (+ and -) coincide with the contacts of the device. Most chargers of this type have up to 4 terminals, but, as a rule, two extreme ones are used.

The next step is to check the polarity if the model is semi-automatic. To do this, click on the Te button (it is on the left). If the green indicator is on, then the battery is connected correctly. If the connection is incorrect, use the CO polarity change button (located on the right), and then TE again. In an automatic model, you do not need to determine the polarity yourself.

During operation, the PW and CH mains indicator will be active, and at the end of the process - FUL, indicating that the battery can be used further. After 2.5-5 hours after placing the battery in the device (time depends on the battery model), it can be removed. It is fully charged and ready for use.

Important! The frog is only suitable for charging lithium batteries... Batteries of a different type, after an attempt to restore them by the “toad”, will become unsuitable for further operation.

What to do in a non-standard situation

When using the universal charger, atypical situations may arise, for example, the battery is charged too quickly or the indicator lights are missing.

How can I charge the battery of cellular terminals if no indicator of the work device comes on? In such a situation, it is recommended to press the CO button.

If no changes have occurred after this, most likely:

• there is an error with the contacts, you need to change the polarity ;
• Battery inoperative ;
• "Toad" broke .

The device will help in a situation when the phone battery is completely empty and has not been used for a long time. In this case, it must be placed in the frog for 10 minutes, after which it must be charged with the terminal's native device.

If, during operation, the device signals a full charge after 10-15 minutes after connection, then it is out of order. And the FUL indicator, which is active when connected to the network, indicates that the battery is unusable.

If the FUL and PW indicator lights up at the same time, then there is no contact between the charger and the battery.

"Zhabka" can be easily bought in online stores, it is inexpensive. This makes it even more attractive to users. It is extremely simple, so if necessary, you can do it yourself from scrap materials. To make it, you will need a clothespin, unnecessary charging from any phone, a few pins, a block of wood, pliers, a glue gun and a soldering iron.

A clothespin is attached to the bar using superglue or a glue gun. Place two pins next to each other at a distance of 0.5 cm. The ears of the pins must be removed, and the point must be driven into the piece of wood by half a centimeter. The end of the pin, where the eye was located, is slightly bent forward. The plug, cut off from the charging, is attached to the pins, having previously determined the plus and minus. It is advisable to mark the polarity on the board, so that later there will be no difficulties with this. The fastening of the pins and wires should also be strengthened with glue so that they do not loosen during operation. When using such a frog, the battery is connected to pins (homemade contacts) and fixed with a clothespin.

There are a lot of descriptions of this process and video tutorials on the network; making it will not be difficult. It will really help out in those situations when it is impossible to use "native" charging for small equipment for some reason.

Instructions on how to use a frog - clothespin.
It is necessary to clamp the battery into the frog so that the charger contacts are on the + and - terminals of the battery. If the battery has 3 or 4 contacts - usually you need to use the 2 outer ones.
If the polarity of the connection is correct, the first green CON LED will light up when the TE (left) button is pressed. If it is off, press the right CO button (polarity reversal) and press the first button again. On some frogs, CON can light up when connected without pressing the button - also the correct polarity. Also, there are already models that themselves DETERMINE POLARITY. Accordingly, there is no right polarity reversal button.

If everything is normal - CON is green - plug into the socket. PW (power) lights up and CH (charge) starts to light or flash. At the end of the charge, the right LED FUL lights up (full).

If CON does not light up at all, the battery is probably dead. Then connect arbitrarily in any polarity and plug it into the network for 5 minutes (not for long - it's not scary). If CH (charge) blinks, then the charge is on and everything is correct, otherwise - change the polarity with the right button and see how CH will behave then.

If PW (network) and FUL (fully charged) are on immediately, then most likely the battery in the frog will not contact (it burns like this without a battery at all) - move it to the contacts.

Sometimes, with a faulty battery (if one cell dies), the frog can show a full charge of FUL even if it is far from the normal voltage. It's just that the charge current does not go anymore - that's all.

If a cell phone with a dead battery does not turn on for charging, does not show signs of life at all, then read below.

I must say that if a battery with a nominal voltage of 3.6 volts sits below 3.2 volts, then the mobile phone may not show signs of life at all, even when the standard charger is connected. That is, the controller sees that there is no battery at all and does not turn on the charge. In this case, the frog is an irreplaceable thing - turning on the battery for 5 minutes through the frog - you give a boost to the battery charge, after which it can be charged in the phone itself.

The additional 3rd contact on the battery is usually a signal from the controller microcircuit (or just a thermistor), which are located inside the battery itself and do not allow overcharging and overheating - they give a signal to the charger (cell phone) to limit the current or turn off the charge altogether. The frog does not have such control and charging it is considered worse than the charging that came with your device. I would not recommend leaving the frog unattended for a long time, especially if your battery heats up when charging, etc.

The recently appeared charger, popularly called the "frog", thanks to the versatility, has become very popular. It can charge almost everyone's batteries mobile devices: phones, tablets, pocket computers, cameras, camcorders. The main condition is that the batteries must be lithium, others will be disabled.

In contact with

Advantages of charging a frog

These include:

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Standard models are designed for connection to household outlets with a voltage of 220 V. For use in cars, 12-volt varieties are available. For the operation of a charger equipped with a cable with a USB-connector for connecting to a PC, 5 V is enough. In addition, they are divided into automatic, independently setting the correct polarity of the connection, and semi-automatic, on which this is done manually with the TE button.

The charging process is monitored using indicators located on the case:

• FULL lights up when the battery is fully charged;
• CHARGE signals that the process has started and is running normally;
• POWER indicates a connection to a power source;
• CON with green light indicates that the battery is connected correctly, with red it is necessary to change the polarity with the TE button.

Rules for working with charging

Using the frog to charge the batteries is simple. To do this, you need to perform the following sequence of actions:

If CON does not light up when the battery is connected, the battery is probably discharged to its limit and needs to be pushed. To do this, plug the device into a power outlet and wait a few minutes. With correct polarity CHARGE will light up, if not, then you should change the poles and start charging. It happens that when connected to an outlet, POWER and FULL light up at the same time. This is due to poor contact between the terminals of the device and the battery. You just need to reinstall the battery. If the FULL indicator immediately lights up when connected to an outlet, then the battery has worked out as it should. Have to buy a replacement. Fast charging (5-10 minutes) means your phone's battery won't last long.

Self-made charging frog

Make a full-fledged universal frog charger from scratch with your own hands it will be difficult for a layperson... If you can't buy, then many will be able to remake an old mobile phone charger into a frog. For work, a piece of sheet plastic, a spring from a clothespin, 2 paper clips, and a wire are enough.

Charger "Frog" - a well-known universal device designed to restore the charge of lithium batteries in mobile phones and other small-sized gadgets. This device cannot be used with another type of battery.

Role in everyday life

Sometimes there are times when charging block there is no smartphone or mobile at hand, it is irretrievably broken or was lost, and it is not possible to acquire it in the near future. In this case, it is replaced by "Frog" - Alternative names - "clothespin", "frog". This device is equipped with adjustable contacts, to which the battery itself, previously removed from the device, is connected directly. Of course, such a process involves some inconvenience associated with the constant removal of the battery and the possible failure of the settings, but sometimes this is the only successful way out of this situation.

Where and what can you use it for?

As mentioned above, this device is suitable for recharging most of the small-sized equipment, mainly phones and cameras. Usually, instructions are included with the frog device, but the problem may lie in the content of the text of the brochure on foreign language, since these devices are mostly made in China.

Some useful information

In addition to the cell phone, the "Frog" charger is capable of charging a camera, pocket computer or navigator, but only if lithium batteries with a small capacity are used. The device is connected to a network with a standard voltage. When the battery is fully charged, the device will automatically disconnect from the mains. This usually takes about two to three hours.

There are several types of frog devices that can be connected to various sources of electricity:

• To a regular home socket with a voltage of 220 volts.
• To the car network - 12 volts.
• Connecting to a PC via a USB port - 5 volts.

The most practical and common is the home-powered frog charger. The choice of the type of device depends on the personal preference of each.

Explanation of the designation of the device

Each such device has several indicator lamps, near which are indicated letter designations to help regulate the entire recharging process:

• Full, ful - indicates a full charge of the battery.
• Charge, ch - charging is in progress.
• Power, pw - the device is connected to a power source.
• Con - the polarity is correct.
• Te - polarity check is in progress.

How does the "Frog" charger work

How do I adjust the polarity manually? First, you should clamp the battery in the charger so that the device contacts are connected to the “-” and “+” terminals. If the battery has three or more contacts, then you need to use the two outermost ones.

If, when connecting, the polarity is correctly determined, when you press the left button "Te", a green light with the inscription "Con" should light up, otherwise press the right button "Con", then again "Te". On some devices, the "Con" LED may light up when connected without first pressing.

The most convenient are the models that automatically determine the polarity, respectively, they do not have the right button for changing the polarity.

If everything is done correctly, the green "Con" light is on, which means you can plug the device into a power outlet. At this point, "Power" and "Charge" should turn on. When the battery charging process is completed, the right LED “Full” will light up. The device can now be removed from the socket and the battery used as directed.

Non-standard situations

If the "Con" does not light up at all, then the battery is completely dead and needs to "swing". In this case, it can be connected in any way in any polarity, and then plugged into the network for five minutes. If "Charge" blinks, it means that charging is carried out correctly, if not, then you need to change the polarity with the right button and see how the "Charge" indicator behaves in this case.

If "Power" and "Full" immediately start to light, then most likely the battery in the "frog" is poorly installed, it should be secured more securely.

Charging time varies depending on battery capacity, usually taking two to five hours:

• 1000 mAh - 5 hours.
• 800 mAh - 4 hours.
• 500 mAh - 2.5 hours.

How to use the frog charger?

The classic device is designed for 220-volt voltage, on the back of its cover there are two sliding pins located parallel to each other - they can be bred to the required distance corresponding to the distance between the battery contacts.

When turned on, it is possible to correct the polarity manually via buttons or automatically. It all depends on what model your Frog charger is.

If the battery is completely worn out, the following situations may occur:

If desired and with some skill, you can build a "frog" charger with your own hands using a simple circuit.

Batteries with more than two contacts can be charged using the described device, but for this it will be necessary to disassemble the battery and connect the charging to it, bypassing the controller.

Following from all of the above, it can be understood that the "Frog" is a universal charger, very useful in case of breakdown of other power sources, small-sized batteries, as well as the inability to charge gadgets in the usual way, which happens quite often. On this moment manufacturers offer all the new gadgets equipped with a USB port and LCD display, which greatly simplifies their use.

The advantages of the device:

• The presence of a USB port that allows you to charge most devices.
• Ease of use.
• Versatility.

Disadvantages:

• Relative fragility with frequent use.
• Long process of charging capacious batteries.

"Frog" - the best option for a backup energy source

Despite a few shortcomings, the "Frog" is a charger, the price of which is very diverse (from 60 to 650 rubles), it is a fairly useful thing in the household, if only because it is able to literally revive the batteries of phones and cameras that do not show signs of life ... But it should be borne in mind that you need to use this device as needed. Too frequent charging with the "Frog" can lead to a rapid depletion of the battery and, accordingly, its failure. Paradoxically, this is true.

Despite the fact that these chargers are mainly made in China, you should not neglect such products. On the modern market, you can find universal and unique auxiliary devices that can significantly simplify our life and give a second chance to parts that otherwise would certainly go to the trash heap. Therefore, it makes sense to have at least some idea of ​​how to use the device "Frog" for the usual recharging of the phone battery.