Hello friends! When choosing components for assembling a PC, it is important how long they work. Many people are especially interested in the life of the computer’s power supply: if during an upgrade some components change, then on a sufficiently powerful PSU, the computer can work for a long time. That's what we’ll talk about today.

Factors Affecting Life

Various conditions to one degree or another affect the shelf life of PC components. Consider what to consider when operating a desktop computer BP.

Device operating mode

Contrary to a widespread misconception, modern electronics do not need to “relax”, and it can be operated at least round the clock. This myth has been walking among the people since the time of lamp technology: diodes and triodes really needed periodic shutdown in order to cool.

Modern transistors are designed for a certain number of hours of operation. However, this does not mean that after the exhaustion of the resource, all components together will fail: the service life can significantly exceed the expected one.

First of all, the life of a unit is influenced by which energy consumers are supplied through it. Maximum efficiency is achieved at 50% load (more about this can be found in the article about certificates of power supplies, which you).

A PSU for computers that works “for wear and tear”, giving consumers the maximum possible power, is more likely to fail more quickly.

Component quality

Practice shows that in this device capacitors most often fail. However, other breakdowns do occur.

It is logical that high-quality components will last longer, and even longer than the prescribed time, while frank counterfeiting may not work out until the end of the warranty service (if the warranty even extends to such components).

Other nuances

The power supply unit, like the rest of the inside of the computer, should be periodically cleaned of dust, which can cause a short circuit, and is also the reason for the deterioration of heat exchange with the external environment. You can purge the PSU with a powerful vacuum cleaner, without even taking it apart.

Overheating is a common cause of electronics failure. Most power supplies are equipped with fans. This component can fail much earlier than other parts - simply due to physical wear of the axle due to friction. Even in this case, the PSU remains operational - just replace the cooler.

Regular power surges or power outages negatively affect the operation of the power supply. If your mains is prone to such problems, it is recommended that you use a UPS or a stabilizer, and sometimes both devices at once.

Warranty service

A good indicator is the warranty period that the manufacturer provides on their devices. It is logical to assume that it is better not to buy a power supply that has been serviced under a guarantee for no longer than six months - in case of failure, it will have to be repaired for its own hard-earned.

However, keep in mind that this is not an indicator, and in the end it all depends on the specific device: one power supply from a trusted brand will last only six months, and the second from the same batch will last fifteen years with almost no loss of performance. But this indicator at least gives hope for its term of work, and I believe that it is worth paying attention to.

What will ultimately be the service life, no one will tell you in advance. Stick to the above recommendations and it may increase.

I also advise you to familiarize yourself with and.

Thank you and see you in the following publications. Subscribe to keep abreast of updates to my blog, as well as share these publications on social networks.

Updated: 02.16.2018 11:19:23

When choosing a charger, you should pay attention primarily to the electrical characteristics of the power supply.

  How to choose a charger for your phone: what to look for

The main criteria when choosing a charger are:

Type (standard adapter or external power bank);

Electrical specifications (voltage, charging current, power);

Support for fast charging technologies (Quick Charge, Fast Charge, etc.);

The number of connectors for the cable and the voltage of each of them.

The charger manufacturer is also important.

  Types of Chargers

Structurally and according to the principle of operation, chargers are divided into two types - the adapters themselves, they are also power supplies; and external chargers, better known as powerbanks.

Adapters or Power Supplies

Adapters are structurally conventional electrical converters that rectify and reduce voltage. Such devices are intended for charging a phone or smartphone from a household network. According to the results of the conversion, an alternating current with a voltage of 220 V and a power of 5-6 A "turns" into direct current, whose parameters are 5-18 V and 0.5-2.1 A, depending on the characteristics and purpose of the adapter.

Adapters are made in the form of small blocks that are installed in a household outlet. A power cable is connected to them, through which the converted electric current “passes” to the smartphone.

Structurally, the adapters are divided into household adapters, designed for installation in a conventional outlet, and car, powered by a cigarette lighter or appropriate socket. Despite the similar principle of operation, they are not interchangeable.

The main criteria for choosing an adapter are the parameters input voltage, output voltage, current strength and support for fast charging technologies.

Separately, it is worth mentioning another variety of power supplies - wireless chargers. Such devices recharge a smartphone that comes in contact with them. Of course, the smartphone itself must be supported for wireless charging.

External batteries or power banks

External batteries, which can also be called portable chargers, power banks, etc., have the same operational purpose as power supplies - they are used to charge the smartphone. However, the principles of operation of these devices are radically different.

Powerbank is structurally a high-capacity battery. It is supplemented by various functional elements - a charge controller, LED indicators, power connectors, buttons, etc. The principle of powerbank is as follows:

First, the external battery is charged from a power source (for example, from an adapter or a computer via a USB cable);

Then for some time he “holds” the accumulated energy;

When a smartphone is connected, the power bank transfers the stored energy to the connected device.

In fact, the powerbank is designed for emergency recharging of a smartphone in conditions when it is impossible to get to the outlet or there is no time for this - on trips, for example.

When choosing a power bank, it is worth starting from the following criteria: capacity, charge current, housing material, support for fast charging technologies.

  Main selection criteria

When choosing a charger, you should pay attention to the following parameters:

Input current and socket standard (especially important when ordering in foreign online stores);

Charge current;

Charge voltage;

All these parameters determine the compatibility of the charger and smartphone.

Input current and socket standard

In Russian household electric networks, a current with a voltage of 220 V, a power of 5-6 A is used (however, when connecting high-power equipment such as kitchen appliances, this parameter increases significantly up to 18-19 A) and a frequency of 50-60 Hz. These parameters should be supported by the charger.

At the same time, in the USA, household networks are used, in which the voltage is 110 V. The adapter, designed for use in America, in the Russian "outlet" can simply burn out.

As a result, when ordering a charger in any online store, you should first pay attention to the supported input voltage. Some adapters can work on any network.

It is also worth considering that sockets in different countries also vary. Type C connectors are used in Russia. Europlug, Schuko, CEE 7/7, CEE 7/16 or CEE 7/17 plugs can be installed in our sockets.

But types A and B (NEMA standards), used in the United States and Canada, are not suitable for use with Russian sockets without appropriate adapters.

Charge current

The charge speed of a smartphone directly depends on the strength of the charge current. The higher it is, the faster the device will restore the energy supply in the battery. At the same time, it is worth remembering that old smartphones are simply not designed for high charge currents.

But a low charge current can lead to the fact that the smartphone does not charge at all - it simply discharges, even when connected to the network. The standards for this parameter are:

500 mA (0.5 A). Suitable for use with mobile phones or very old smartphones. Such a charging current is not able to cover the "fixed costs" of a modern high-power mobile device, but it is necessary and sufficient for devices manufactured, for example, before 2010-2011;

750 mA (0.75 A). It is very rare. The scope is similar to charges calculated at 0.5 A;

1000 mA (1 A). The most common current standard in chargers. It is versatile enough, suitable for use with most mobile devices - from mobile phones or portable players to smartphones of the budget or mid-price segments;

2000-21000 mA (2-2.1 A). It is used for demanding devices - for example, tablets or flagship smartphones with a high-resolution screen and a powerful processor. It can be dangerous for old devices. Provides high charging speed and stable power even when the connected device is in active use.

It is advisable to use power supplies that have the same amperage as those supplied with the smartphone. This, however, does not apply to adapters that support fast charging technology.

It is worth remembering that manufacturers of budget power supplies often intentionally overestimate the strength of the output current. For example, a device that is labeled 1 A can actually produce 0.5 A. Therefore, the quality of the power supply is also very important.

Charge voltage

Almost all modern smartphones, unless otherwise specified, are designed to be powered by a charge current of 5 V. This standard is used, for example, in computer USB ports. As a result, for the compatibility of the smartphone with a PC, it must receive a 5-volt current.

Therefore, it is definitely not worth buying chargers or power supplies that have a supply voltage of more or less than 5 volts. Such accessories may well “burn” delicate electronics inside the smartphone or cause damage to the built-in battery.

Similarly, this rule does not apply to adapters that support one or another fast charging technology.

From 2014-2015, many manufacturers began to introduce fast charging technologies. With this connection, the power supply produces high values \u200b\u200bof current and voltage in order to restore the battery capacity in the smartphone even faster. The specific value of these electrical parameters is determined by the manufacturer and the standard for fast charging technology, but in the general case it is up to 5 A and up to 20 V, respectively.

Fast charging technology is implemented at a low software and hardware level and involves the exchange between the smartphone and the power supply, not only electricity, but also information. For example, the power controller in the smartphone sends a “command” to the power supply to increase the current and voltage, and that, accordingly, performs. Or not, if it does not support fast charging technology.

It is clear that if you connect a smartphone in which it is not implemented to the power supply with support for fast charging technology, the latter will receive less current.

However, fast charging standards vary. The following are distinguished:

Quick Charge A standard developed by Qualcomm and supported only by a limited number of SoC processors from this manufacturer;

Pump Express. A standard developed by MediaTek. Similarly, Quick Charge is supported only by a limited number of SoC processors from this manufacturer (installed in most Chinese flagship smartphones);

TurboPower The standard was developed by Lenovo specifically for some Motorola smartphones;

Adaptive Fast Charging. Samsung's proprietary charging standard. It has been used since 2015 in smartphones of the flagship and "upper-middle" price segments - in the S, Note, A and some other lines;

VOOC Fast Charging - developed by BBK specifically for OPPO smartphones;

Dash Charge - developed by OnePlus for branded smartphones;

Super Charge - Huawei standard;

Super mCharge is Meizu standard.

Standards in most cases are not cross-compatible. Therefore, if the smartphone supports Samsung Fast Charging fast charging technology, you should buy a power supply unit equipped with support for the same technology. But the Quick Charge adapter will “give out” unless the standard 5V / 2A.

  How to choose an external charger

When choosing a power bank, you should pay attention to three parameters:

1. Charge current;

   Body material.

But the first two are most important.

Capacity

The higher the power bank capacity - the more times it is able to recharge a shrunken smartphone. However, the actual value of this number is determined by the battery capacity of the smartphone.

For example, if your smartphone is equipped with a 3000 mAh battery:

Powerbank at 5000 mAh will recharge it 1 time;

Powerbank at 10,000 mAh will recharge it 2-2.5 times;

Powerbank at 20,000 mAh will recharge it 5-6 times.

However, the exact number depends on a number of other parameters, including charge current, resistance of the connected cable, weather outside, time elapsed since charging and many others. Therefore, you should not hope that, for example, a 5000 mAh power bank will be able to recharge a smartphone with a 2500 mAh battery twice.

Charge current

Choosing the value of the charge current is based on the same parameters as for conventional network adapters (power supplies). Given that the stability of the current strength in power banks is not too high, it is worth choosing deliberately overestimated parameters:

For mobile phones, old smartphones, players, smart watches, wireless headphones and other gadgets that do not consume high power during operation - 1 A;

For modern smartphones, tablets, low-power laptops - 2-2.5 A.

There are several powerbank models that support fast charging technology. As a result, it is worth considering the compatibility of the charger and the smartphone with which it is planned to be used.

However, power banks that support fast charging technologies are not recommended for purchase. The built-in batteries in them usually do not survive the “squeezing” of them 20 V / 5 A. Therefore, the battery capacity drops, and after a few months it will be necessary to change the power bank.

Body material

Strength, durability and some operational characteristics of a power bank depend on the material of the case. Such devices can be made of plastic, metal, as well as complemented by rubberized inserts.

Plastic is a simple, inexpensive, but fairly reliable material. Power banks with such a case are cheaper than metal ones, but at the same time they do not survive well when they fall to the floor. However, plastic has an important advantage - external chargers made in such a material better survive temperature extremes in the cold season.

Metal better survives any falls and other mechanical influences. However, power banks in such cases are slightly more expensive. In addition, due to the fact that the metal “accumulates” low temperatures, in the cold season, such devices self-discharge faster.

Additional inserts - for example, rubber ones - either protect the powerbank from impact, or simply make it more beautiful.

  Top manufacturers

Top Power Adapter Manufacturers   For smartphones are:

The best manufacturers of power banks   are:

   Attention! This material is the subjective opinion of the authors of the project and is not a guide to the purchase.

The catalog contains two main classes of power supplies. Voltage sources - both for powering LED strips and modules, as well as for industrial applications. Current sources - for powering high-power LEDs in luminaires.
   Download / 7.3 MB

By

The power supply for LEDs is necessary to maintain a constant current, otherwise they are also called current sources or a driver. The service life of both individual LEDs and the LED lamp as a whole depends on the quality of this device. In the struggle for the low cost of LED lamps, low-quality power supplies are often used, the service life of which is much shorter than the life of LEDs.
Dimmable power supply for LEDs has a high quality of protection during operation of the device. The power supply is installed even in the smallest spaces, due to its compactness and small size, which allows you to realize any task in the production of lighting fixtures.
The power supply for high-power LEDs has different cases: open, sealed, ultra-thin, network adapters - they all have protection against various adverse effects.

Full article

Enjoy reading!

By

We live in the age of digital technology, development does not stand still, new, more convenient technologies in science and technology appear every day. It is not surprising that LED lamps, which 10 years ago seemed to us something completely new and incomprehensible, replace obsolete incandescent lamps and, especially, light sources based on mercury. If before LED lighting could be seen only in large supermarkets and shopping centers, now it is widely used in transport and even at home.
You may have noticed a new generation of lamps from your friends or acquaintances. And this is not surprising - their advantages over alternative light sources are obvious, because such lamps have much higher luminous flux and light output. The reliability of LED lamps is also important, they really serve much longer than their competitors. Subject to the correct approach and working conditions, they can serve you for more than one year.
In order for the new light source to work stably, a special power supply for high-power LEDs is needed. Such power supplies provide a constant stable current, which is a condition for stable continuous operation of the light source. To only one unit (current source) can be connected as a separate LED, or a whole chain.
Thanks to the latest developments of power supplies, powerful LEDs can work for a really long time, because the power supply used to fail earlier, which interrupted the life of the LEDs. Now, like LEDs, power supplies have a long service life. When buying LED light sources, be sure to check the life of the power supplies (current sources)

Full article

Enjoy reading!

By

A 12V, 24V power supply is necessary for supplying power to LED strips and their proper operation. There are various types of power supplies with different protection and control properties.
The power supply 24 and 12 can be either sealed or leaky. Before you purchase a power supply, you need to determine the total number of all LED connections. The voltage of the power supplies must match the voltage of the LED products. If the number of connected LED products exceeds the limit, then there may be differences in the operation of the power supply. The device may malfunction or become completely malfunctioning. Power supplies should be purchased with a power reserve of 15-20%

Full article

Enjoy reading!

By

The LED driver is a device that, when connected, LEDs of any power will not produce current above a threshold value. In another way, drivers are called: current sources.
When choosing an LED driver, you must pay attention to the service life, it should not be less than LEDs.
It is also worth paying attention to the possibility of dimming LEDs, in this case it is necessary to use dimmable LED drivers.

Full article

Enjoy reading!

Charger(Memory) - transfers gadget batteries energy from external sources and thereby ensures long and uninterrupted operation of phones, tablets, laptops, e-books, mp3 players and other equipment.

All gadgets are usually equipped with "native" memory. However, during operation, there is a need for additional memory. Another factor in favor of such devices is the fact that most modern devices do not involve replacing one battery with another (with the exception of cameras).

   Appointment

Devices for charging exclusively a phone or tablet have one USB-output for connecting the appropriate equipment. The main difference between these memories in the strength of the output current, which is measured in amperes (A).

For mobile phones, this parameter does not exceed 1 A, which is enough to recharge most small gadgets. For tablets, the output current is 2.1 A. The more expensive universal charger usually has two USB outputs for different devices.

Important: The maximum current of 2.1 A is allocated only if one device is connected. If two devices are charged at the same time, then the charger will “give out” a current of 1 A. If you charge equipment designed for 2.1 A with a 1 A charger, it will charge longer.

By type of memory, they are divided into stationary, universal, wireless, automobile, Power Bank (battery), Power Bank (solar battery), manual and battery (ordinary battery).

   Stationary (network; SZU)

Szu charges the gadget from the mains (220 V). It can be “native” to certain models or just an adapter for connecting a USB-connector to the mains. SZU is relatively inexpensive and has no restrictions on the energy resource, but depends on the availability of the network.

   Automotive (AZU)

The AZU charges the gadget from the on-board network of the car and connects to the cigarette lighter. Performed in the form of a cable or adapter, often cylindrical in shape with USB-connectors for devices. This charger can only be used in a car. AZU is perfect for people who are constantly driving.

   Universal

This memory is a USB cable, which is connected at one end (via a USB port) to a computer, laptop, car charger, and the other (via connectors) is connected to a tablet / phone. Such a device is inexpensive, but its functionality is limited by the presence or absence of these devices at hand.

When using a universal memory, it is necessary to take into account the input current parameter - the current in the devices from which the device is charged. This setting affects the battery speed of the connected device. But not all power supplies provide more amperage. For example, a USB port on a PC has an input current of 500 mA.

   Wireless

This memory works on the basis of the principle of magnetic induction and transfers energy directly to the phone / tablet without connecting a cable. It is executed in the form of a platform on which the gadget is placed. The wireless charging panel itself is connected via a cable to a network or to another device (computer, laptop) via a USB port.

Wireless memory is easy to use, safe (no contact with electricity) and the ability to use in difficult conditions. However, long-term charging, in which the phone / tablet cannot be fully used, and the very high price cast doubt on these advantages. Moreover, such devices do not fit every phone.

Most wireless memories are universal, that is, suitable for models of different brands. There are also wireless car memories.

   Power Bank (battery)

This type of memory is most common. The battery does not depend on external conditions and has a larger capacity than a conventional battery, which means that it ensures a longer operation of the electronic device. The price of this memory is more than the battery. Like batteries, such devices contain an electrolyte hazardous to human health.

Most often there are two types of batteries:

• lithium-ion (Li-Ion) - the most common batteries that have an affordable cost and acceptable quality;
• lithium-polymer (Li-Pol) - they are much less heated and self-discharging, have less weight and are more durable. Instead of electrolyte, polymer batteries are used in such batteries. However, Li-Pol tolerate subzero temperatures worse (capacity is reduced), and their price is higher.

Power Bank comes with both built-in and replaceable batteries.

Capacity

This parameter indicates the amount of energy that Power Bank gives to the connected device until it is fully discharged.

External battery capacity is measured in   milliampere-hours (mAh)   and ranges from 2000-50000 mAh. The capacity of a lithium-ion battery depends on the number of batteries it consists of: 1 cell - 1200-2400 mAh, 2 cells - 2500-4400 mAh, 3 cells - 3750-6600 mAh, 8 cells - 10400-14400 mAh.

In order to correctly select the capacity of the charger battery, you need to know the battery capacity of the charging device. In this case, the storage capacity should be higher by 20-30% , because for a number of reasons, not a single battery provides a full return of energy, and over time its capacity decreases by 15-20%.

For example, if your phone has a 2000 mAh battery, then a suitable memory device must have a capacity of at least 2500 mAh. If there are several such devices, then the sum of their capacities plus the same 20-30% supply will be a sure indicator.

Important: some manufacturers even indicate two parameters: declared and actual capacity, helping to navigate in choosing the right capacity.

It is necessary to take into account the circumstances of using the memory. For a long time out of access to the power grid, one should purchase a memory device with the maximum possible capacity, despite its high price and weight (dimensions).

If the task of the memory is to maintain the battery charge of the phone / tablet until you get home, then in this case less capacious, but more affordable and compact devices will become the optimal solution. Interesting options - a memory in the form of a keychain or phone case.

One of the varieties of rechargeable Power Bank is Power   P en made in the shape of a pen. This is a compact memory with a capacity of 700 mAh. Such a device is useful in emergency situations. Power Pen is also used as a stylus.

Important: The price of Power Bank directly depends on the capacity of its battery: the higher the capacity, the higher the cost of the device. Therefore, a cheap and at the same time quite capacious memory is unlikely to be of high quality and most likely will not last long. Battery chargers can store energy for 6-12 months.

Other Power Bank Options

Output currentis the current directed from the memory to the connected device. Measured in amperes (A). This parameter affects the battery charge speed: the higher this parameter, the faster the charger will charge the battery of the device connected to it. It is worth remembering that too high a parameter can lead to overheating of the phone and its breakdown.

output powerbattery charger is measured in watts (W). This indicator should equal or exceed the power of the gadget’s rechargeable battery, otherwise the charger will discharge it.

Important: in order to determine the charging time of the battery of the charging device, it is necessary to divide the output power of the memory by the capacity of this battery.

Output voltagebattery charger is measured in volts (V). This indicator should match the input voltage of the gadget being charged. For phones and tablets, this value is most often 5 V, for video cameras - 9 V, for laptops - 16/19 V. If the output voltage of the charger is higher than the input voltage at the receiver, this will lead to damage to the battery of the charged device and even to it the explosion.

• for phones, smartphones, PDAs, GPS-navigators should choose a memory with a capacity of 2000-5000 mAh, power 0.5 W;
• for cameras, camcorders and tablets, a memory device with a capacity of 4000 mAh and a power of 0.8 W is required;
• for laptops, netbooks and other powerful devices, it is better to purchase a memory with a capacity of 10,000 mAh and a power of 1.5 watts or more.

In hiking trips, it is better to take a charger with a capacity of 8000-20000 mAh and higher.

Power Bank (solar battery)

This Power Bank resembles the previous device, but it is not powered from the network, but from the sun. The resulting energy is converted into electricity by the charger. Solar-powered Power Bank is environmentally friendly, has a long service life and reliability.

The solar battery can be recharged both from the sun, and from the network or laptop. The memory is sensitive to weather conditions: in cloudy weather it charges the equipment and charges itself much more slowly. The price of such a memory device is the highest among portable devices.

Solar-powered devices are the best choice for long trips, as the traveler will almost always be able to recharge his memory. In the field, the dynamo is also useful, but its efficiency is much lower.

Solar memories are of two types.

• With battery(capacity within 4000-25000 mAh) - consists of a solar panel, a battery, a converter and a charge / charge controller. The body of the device is made of rubber or metal. This charger is charged from the network, and then in the process of working, it is recharged from the sun.
• Without battery   (power is 3-300 watts) - consists of the same elements, with the exception of the battery. The shell of the device is made of waterproof fabric. Such a memory device, like a network one, directly transfers energy from a power source (sun) to a connected gadget. Chargers without a battery are cheaper.

Budget models have a 0.2-0.4 W battery and charge for 10-15 hours. More expensive memories are equipped with a 1-3.5 W battery, due to which charging takes place faster - 4-5 hours. Solar storage with panels up to 3 watts are good for recharging the gadget's battery, devices with a capacity of more than 3 watts can effectively charge directly from the sun.

Solar panels can be made of monocrystalline or polycrystalline silicon. The efficiency of a single-crystal panel is 18-20%, and that of a polycrystalline one is 15-17%. In appearance, the single-crystal panel is black, and the polycrystalline - blue.

Important: Efficiency refers to the efficiency of absorption and conversion of sunlight into electrical energy.

A solar-powered Power Bank is preferably used in the spring-summer season, when strong enough sunlight ensures its fast charging. Solar storage units can withstand temperatures from -20 to +45 ° C.

   Other memory

In addition to the listed memory, there are mechanical and battery memories. These devices, like Power Bank, allow you to charge your gadget in the absence of an electrical outlet.

Mechanical(manual, dynamo machine) - the simplest memory that works from the muscular strength of a person - the torsion of a rotation knob generates current. Such a memory device is poorly suited for fully charging the equipment, but is useful for its small recharging when the battery or the battery stopped working. Manual memory is cheap.

Battery   - cheap and compact, but not very effective, since the battery has a small capacity and requires periodic replacement or recharging (for rechargeable batteries). Therefore, you must always have a spare battery. Due to the presence of electrolyte in the battery, such a charger can hardly be called environmentally friendly.

   Output connection

This option ensures compatibility of the memory with various gadgets. When choosing a memory, you should make sure that you have micro-USB, mini-USB, and an iPhone connector. The number of USB outputs can vary from 1 to 4. The best choice would be two USB ports

It is worth paying attention to the proprietary connector - developed by a specific manufacturer exclusively for its products (Sony Ericsson, Apple, Samsung, Nokia). You cannot connect a gadget from another manufacturer in such a connector.

   Adapter

In the package you can find a car (for cigarette lighter) and a network adapter (for 220 V). Using the adapter, the user actually changes the type of memory. This device can be useful for charging the charger if it is discharged or when there is no sun (for the solar charger).

Dynamo machine - plays the same role as adapters with the only difference being that in this case, the current is generated manually.

   Cable

Cable can be found in several forms:

• straight- A cheap and easy option, but not too convenient;
• twisted- rolled into a spring, such a cable is more compact in the absence of its tension;
• in the form of roulette   - takes up a minimum of space;
• inline- Attaches to the memory housing and is located in a special niche. Although this cable is relatively small, it is more convenient than other analogs, since it will not be lost.

The cable length can be different: less than 50 cm, 50-100 cm, 100-200 cm. It is determined by the distance from the power source to the charger. A cable that is too short or too long will cause inconvenience when operating the memory device. In most cases, a length of 50-100 cm will be sufficient. A length less than 50 cm is suitable for an ACU

Important: Pay attention to the quality of the cable, as it affects the charging speed of the gadget. A good cable should not allow a drop in output current and voltage. Also, the low charging speed can be explained by the long length or small cross-section of the cable.

   Features and functions

Case- used for transportation and storage of storage devices and adapters.

Repeller mosquitoes- scares mosquitoes, usually through ultrasound.

Lamp- plug-in or built-in memory powered by a battery. Useful accessory in the dark.

Charge indication- Displays the charge level of the memory via the LCD screen or via LEDs.

Waterproof housing- protects the storage battery from moisture.

Card reader   for reading SD and microSD memory cards - allows you to transfer information from the phone’s memory card to a computer or laptop. Practice shows that this function is rarely used.

In addition, the memory devices have protection against overheating, overcurrent, overcharging, overdischarge, voltage drops, short circuit, reverse polarity.

• The price of the memory depends not only on the material, capacity, build quality, but also on the manufacturer. You should not buy cheap memory of unknown brands, as they can not only quickly fail, but also damage the battery of the charging device.
• In cheap memory, the case material is made of lightweight plastic, more expensive devices have a durable metal case (most often aluminum).
• The memory must be intact and free from defects. Otherwise, it will simply be useless.
• After the phone / tablet or other equipment is fully charged, it is recommended to disconnect the charger from the mains. This will save electricity and not harm the battery of the gadget (from overcharging reduces its service life).
• Battery chargers lose their charge over time. That is why the charger should be charged on the eve of its intended use, for example, just before the trip.
• Do not allow the electronic device to completely discharge before charging it with the battery charger. The best result is achieved when the electronic device is not charged "from scratch", but recharged.
• Each battery charger has its own life, which is measured in charge-discharge cycles. It is recommended to choose devices designed for 500-1000 such cycles.

Edited: 09/16/2016

If the battery on your phone or tablet running the Android control system starts to run out too quickly, you will most likely need to replace the batteries for your Samsung phone.

However, the correct gadget setup can sometimes help. Downloaded and installed applications may take too much charge. The device can be configured so that the battery lasts as long as possible. But not always such a setting can save the situation. About it and not only - further.

So what are the main indicators for replacing the battery (s) for mobile phones?

• The battery loses 20% of its capacity every 500 discharge-charge cycles, that is, after 2 years of use, it can lose 20-40% with a daily charge. Frequent overheating, cold, excessive humidity accelerate the process of losing the battery, its capacity and it can lose 20-30% of capacity in the first year of use. In this case, it is better to buy a more expensive battery, and not choose a cheap analogue.
• The battery has changed its shape - swollen, rounded, spinning on a flat surface. If you have an iPhone or another phone with a built-in battery, the shape of the case may change, the display or back cover may bulge
• The phone discharges from 100% to 0% in a few hours with inactive use
• The phone turns off during a conversation in Ukraine, even if the battery level shows 20-30%
• The battery test from the online store shows the level of wear and needs to be replaced. On Android smartphones, this can be done using the combinations * # * # 4636 # * # * or * # 0228 # *, as well as using the third-party Battery Info and MacroPinch Battery programs. On iPhone, battery health can be checked using Battery Life

How to extend the life of the rechargeable battery (s) for mobile phones?

• First of all, it is worth charging the gadget regularly.

Do not allow the battery to completely discharge. Despite the fact that modern lithium-ion batteries do not have the so-called memory effect, and have a pleasant cost, charging should be periodic. Of course, it is possible and even necessary to put the device on charge before it is discharged before shutting down.

Most manufacturers in Kiev calculate the life of a lithium-ion battery in full discharge cycles. To check this indicator yourself - you can order battery diagnostics. For the highest quality batteries, this period is an average of five hundred cycles. In order to extend its life it is worth charging the gadget more often. Best of all, put the phone on a charge when the charge indicator has dropped below 20-10 percent. This action can extend the life of up to 1100 cycles.

• Put the device on charge in time.

The device will last longer with a constant charge of 50-80 percent. If the battery is fully charged, then it should be disconnected from the power supply in time, since such a factor will also affect the battery life. Recharging is also not a good factor for a long service life. The price of such a charge is a longer period of use.

• Charge the phone only from the original power supply.

The charging cord is allowed to be taken not original, but the power supply is best used native. Few people know that the power adapter of the charger has built-in network adapters that "equalize" the electric current from the household network and make it optimal for charging the phone. However, some devices do not have built-in charging.

• Several times a year, charge and discharge the phone to 0 and up to 100 percent.

Full charge for a long time is harmful to a lithium-ion battery, the same situation with a full discharge of up to 0 percent. Experts always give recommendations at least once every three months to bring the phone to full discharge, and then keep it on charge from 8 to 12 hours.

Instructions