How Much Does Samsung A51 Charge

Xiaomi Redmi Note 8 Pro (Xiaomi Redmi Note 8 Pro). The appearance of Xiaomi Redmi Note 8 Pro

The model received a durable glass case with a metal frame. The display has a diagonal of 6.53 inches and a Full HD resolution. The company did not deviate from the proven one, and Redmi Note 8 Pro got an IPS matrix with a teardrop notch. The device is offered in three colors:

  • The black;
  • Green;
  • White.

The configuration includes a USB-C port, and a connector for a wired headset, and a slot for a memory card, and an infrared sensor that will allow you to remotely control household appliances. In this regard, this phone is an uncompromising decision of the Chinese manufacturer. Four modules are installed on the back side of Xiaomi Redmi Note 8 Pro. Three of them are located in a row on a vertical platform. Another one is placed on the right along with an LED flash. Chinese engineers have placed a fingerprint scanner under the three lenses on a common site. Protection against water and dust according to the IP68 standard for Xiaomi Redmi Note 8 Pro is not declared, but it is not in the more expensive Mi flagships, so there is nothing to be surprised at and you should not be upset.

Xiaomi Redmi Note 8 Pro. Specifications Xiaomi Redmi Note 8 Pro

Chinese developers decided to use the single-chip system of the Taiwanese processor giant MediaTek when creating a new generation model of the Note series. The SoC was the mobile Helio G90T processor, which has a maximum clock speed of 2.05 GHz and is a gaming chipset, according to the manufacturer. In AnTuTu software, the single-chip system is gaining nearly 300,000 “parrots”, which is an excellent indicator for a 12-nanometer solution.

The amount of RAM in Xiaomi Redmi Note 8 Pro is 6/8 GB, and permanent memory is 128/64 GB. I must say that 8 GB of RAM is a record in the Note line. The battery capacity is 4500 mAh, which is also the best indicator for all the years of existence of this series of smartphones. Xiomi Redmi Note 8 Pro supports 18-watt fast charging over the wire, but there is no wireless charging in the device, although there were rumors that the phone will receive it.

The main camera received modules with a resolution of 64 Mp, 2 Mp, 2 Mp and 8 Mp. At the same time, the device was left without a telephoto lens. The 8-megapixel image sensor in the Xiaomi Redmi Note 8 Pro is paired with wide-angle optics. But for the camera, the manufacturer announced a lot of intelligent functions. The front camera of Redmi Note 8 Pro also received support for artificial intelligence algorithms. It can recognize faces to unlock the device, and the resolution of the image sensor underlying it is 20 megapixels.

The phone runs the Android Pie operating system and received MIUI 10 proprietary software. Perhaps, when you read this, the model runs on MIUI 11 firmware. Their chips can be distinguished by the presence of a liquid cooling system, which should effectively cool the game processor so that Xiaomi Redmi Note 8 Pro could run at maximum frequency.

Smartphone battery charger

Now, as for the charger (charger) for the smartphone battery. Let’s briefly consider the main aspects of choosing a storage device for a smartphone:

  • Original or universal charging. It is better to charge the smartphone from the “native” charger. But if you choose the universal charger in accordance with the characteristics of the smartphone battery, then there is no difference. It is safe to charge from a computer, but it takes a long time;
  • What current to charge. The charger should charge with a current not exceeding the maximum battery charging current. This value can be found in the battery specifications. In most cases, with a smartphone battery capacity of up to 1800 mAh, the charging current is 1 A. If the capacity is larger, then 2 A;
  • Cable. Use a data cable for charging. The smartphone battery identifies the charger by it. Otherwise, the charging process may end up sadly.

How to properly charge a smartphone with a new battery

The problem with any smartphone is its short battery life. Conventional phones, the predecessors of smartphones, lasted several days without recharging. The battery of modern gadgets runs out in a day, a maximum of two. This is a payment for large screens, multimedia applications, Internet access, etc. Therefore, you have to charge the battery very often, which is why it begins to degrade within a year after use. And in order to prolong the battery life of your smartphone, it is important to properly charge it while it is new. There is a lot of discussion about how to properly charge a new smartphone battery. Let’s try to understand this issue.

Battery types in smartphones

To begin with, it is worth saying a few words about the types of batteries used in phones. Modern smartphones use lithium-ion (Li─Ion) and lithium-polymer (Li─Pol) rechargeable batteries. What are these devices?

How Much Does Samsung A51 Charge

We recommend that you additionally read the article on how to properly charge a li-polymer battery.
So lithium ion batteries with a negative electrode made of carbon materials were developed. Cobalt oxides were used as the active mass of the positive electrode. This material has a potential of 4 volts with respect to the carbon electrode in which lithium is intercalated. Therefore, most lithium ion batteries have a voltage of 3-4 volts.

Smartphones also use lithium-polymer batteries (Li-Pol). They are based on the transition of polymers to a semiconductor. This occurs when electrolyte ions are introduced into their structure. As a result of this process, the conductivity of the polymer material increases significantly. Scientists are working towards finding a polymer material that would replace a liquid electrolyte. Such searches are underway for both Li-Ion and metal Li batteries. In the latter, in the case of using a polymer electrolyte, the energy density can increase several times in comparison with lithium ion.

Now battery manufacturers have already mastered the serial production of lithium batteries of the following types:

  • Polymer electrolytes in which lithium salts are embedded. It may not be a single polymer, but a mixture;
  • Dry electrolytes based on polymer. Most of them are polyethylene oxide with various lithium salts;
  • Microporous matrices where non-aqueous solutions of lithium salts are embedded.

How to properly charge a new smartphone battery

We have already talked about how to properly charge a smartphone battery. Now we will talk about charging a new battery. Many have probably heard that a new smartphone battery needs to be charged in a special way. It really is. If you bought a new smartphone or a battery for it, then the battery needs a “buildup”. What does it mean?

For more information on how to swing a smartphone battery, read the material at the link.

Experts recommend exercising your phone’s battery once a month. It consists in the fact that the battery is discharged to zero and charged to 100%. Do not forget your smartphone on charging for a long time if you use “non-native” chargers. This can damage the battery. Be careful when using third party chargers designed for cigarette lighters in your vehicle. Match these chargers to the battery characteristics of your new smartphone.

There are such devices, which are popularly called “frogs” for their appearance. With their help, you can charge the battery directly without a smartphone. Their choice also needs to be approached carefully. The requirements are the same, compliance with the charged smartphone battery in terms of power, voltage, current.
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Tips on how to properly charge your Samsung smartphone

Charging the phone every time from 0% to 100%, its battery will last a maximum of 500 cycles, and then it will lose most of its capacity. So what can you do to maximize your battery life? Here are some tips:

  • Charge your phone regularly. Do not let the phone drain completely before shutting down, and do not charge it 100% and keep it that way for a long time.
  • Keep the charge in the range of 10-80% and you can extend the life of the battery at least 2 times.
  • Do not leave your phone on a charge overnight. This only overloads the battery.
  • Do not overheat the battery too much.

Of course, you shouldn’t get hung up on all this. Don’t worry if your phone runs down to zero and you can’t charge it for a while, or if you fully charge it on a long journey. Even without our recommendations, an autonomous power supply for a mobile device will still serve you for several years.

How to properly charge a new smartphone battery?

Many “experts” will advise that a new battery should be charged in the off state of the device for about a day, while others argue that three full charging and discharging cycles are indispensable. I hasten to inform you that these tips are not suitable for modern Li-Ion batteries, as they are devoid of the “memory effect” and other disadvantages.

So what do you do with a new battery, you ask? It’s simple. Practically nothing! We changed the autonomous power supply to a new one, charged it 100% and use it. Do not drain the phone to zero, there is no need for this. Over time, the phone will “get used to it” and will start working at its full capacity, as well as display the correct charge level.

Follow the aforementioned tips and this time your battery will last significantly longer. All recommendations are also valid for new mobile devices with completely new batteries.

Can I use wireless charging?

This method of recharging the battery can also overheat the phone and reduce its life. If you find that wireless charging is causing your device to stay warm, then try to avoid using it.

Modern induction coils tend to get hot, there is nothing strange about this.

How to properly charge your Samsung Galaxy smartphone

Modern batteries for mobile devices are distinguished by better reliability and performance, so many of their problems, which everyone knows about, are no longer relevant. Today we will renew your knowledge in this area so that you know how to properly charge your Samsung Galaxy smartphone.

There is no instruction as it is unnecessary. First, you shouldn’t bother with how and when to charge the battery. Just connect your phone or tablet to the power adapter and that’s it. The only thing you need to know is that you should not cover the gadget so that it does not overheat. Excessive heat will negatively affect battery life.

Secondly, do not use a non-original charger. Beware of cheap adapters from unknown manufacturers. You can use high-quality chargers from reputable brands that claim to be compatible with your mobile gadget model. If the smartphone supports fast charging, then the charger should also have this function.

It is no longer necessary to discharge and charge it fully three times in a row after buying a new device. Modern sources of autonomous power supply are devoid of the “memory effect”, so this recommendation is no longer relevant.

Is fast charging harmful for a Samsung smartphone?

The first versions of fast charging technologies did have a negative impact on battery capacity due to the fact that the phone got quite hot during the process. Modern developments are much more efficient than before, thanks to which they charge faster and heat less.

The drop in battery power is now so slight that after several years of use, you won’t even notice a change. So do not be afraid that a few months after using the smartphone battery will become unusable.

Of course, if you still don’t trust these technologies, then disable fast charging if you’re not in a hurry. Luckily, many smartphone manufacturers allow this. If you cannot turn off fast charging in your device, then use a quality power adapter that does not support fast charging. The phone will charge more slowly, but more confidently.

Drawing conclusions

If you want to extend the life of the battery of your smartphone or tablet, then these tips and tricks will definitely help you, but if you do not want to bother, then it will still work for at least 2-3 years without problems.

Beware, first of all, of the high heating temperature of a mobile gadget, since modern lithium-ion batteries are very sensitive to overheating.

Galaxy A51 camera

  • 48 MP (f / 2.0, 1 / 2.0 ″, 0.8 μm, 26 mm, PDAF), main camera;
  • 12 MP (f / 2.2, 1.12 μm, 13 mm), ultra wide-angle camera;
  • 5 MP (f / 2.4), macro camera;
  • 5 MP (f / 2.2), depth sensor;
  • 32 MP (f / 2.2, 1 / 2.8 ″, 26mm), front camera.

There are only two fundamental improvements in the A51 camera over its predecessor. An increase in the resolution of the main module to 48 MP and the appearance of an additional lens for macro. Let’s start with the first. The main camera doesn’t actually shoot at 48 MP, it combines 4 pixels in 1 and outputs 12 MP photos in standard mode, which allows the sensor to capture more light in difficult conditions. This really improves the quality of the shots: where the A50 used to produce soap, the A51 retains good detail and correct color reproduction, which is especially noticeable in artificial lighting.

However, the A51 camera has a new sore, fortunately. A software one, with the next firmware updates it should be fixed. When shooting in automatic mode, the phone tends to overexpose the picture, which makes the pictures appear lighter than necessary, and during the day you have to turn the exposure compensation slider every now and then.

As for the wide-angle camera, increasing the resolution from 8 MP to 12 MP gives a slight increase in sharpness, but compared to the A50, the difference is minimal. The photos turn out to be good, however, even here the imperfect work of the automation is noticeable, which often makes mistakes with the white balance, which is why the pictures may differ in color from the main module.

The A51 was the first smartphone from the company with a separate macro camera. She got a fixed focus, so when shooting, you need to hold the phone strictly at a distance of 3-5 cm from the object. The quality on a 5-megapixel module turns out to be quite working, but you cannot record on it. As you can see in the photo, there is enough detail to convey the oily texture of a croissant in a low-light room.

Is a macro camera useful in practice? Most A51 owners are likely to use it very rarely. It can be used to shoot flowers or other small objects in close-up, but for photographing the same food makrik is not suitable, because we want to capture the aesthetics of the whole dish, and not a specific part of what is on the plate. Even a cursory examination of social media shows that very few take macro photography, and a telephoto lens with optical zoom would be much more useful in most situations.

For selfie lovers, the A51 can offer a 32-megapixel camera, the opening of which is beautifully illuminated when switching to the front module. Despite the impressive resolution, selfies are average. They lack detail and still have the same overexposure problem.

Both the front and rear cameras are capable of 4K UHD recording, however stabilization is only available in 1080p mode, so you’ll have to choose between crisp or smooth footage. You can shoot both with the main module, as well as with the wide-angle module, in the latter there is no autofocus, but the extremely effective EIS Super Steady mode works. In general, Samsung, as always, is not without restrictions, but for its price the A51 has a very good.

  • Mono speaker;
  • Headphone jack;
  • Fm radio.

The Samsung A51’s multimedia speaker is not impressive. The sound of the smartphone is very similar to its predecessor. Medium volume, clean but flat sound with a minimum of low frequencies. Watching YouTube or a movie will do, but the Koreans should work on the speakers of their smartphones for a long time, since even cheaper Xiaomi in this regard.

The device has a 3.5 mm jack, support for Dolby Atmos effects and a 9-band equalizer, which allow you to customize the sound when connecting wired and Bluetooth headphones. But the A51 will hardly please the discerning lovers of wireless sound. There is no aptX support, only SBC / AAC.

Samsung Galaxy A51 specifications

  • Screen: 6.5 ″, Super AMOLED, FHD (2400 × 1080 px), 20: 9, 405 ppi;
  • Processor: Exynos 9611 (8 × 1.7-2.1 GHz, 10 nm), Mali-G72 MP3 photographic;
  • Permanent memory: 64/128 GB MicroSD up to 1 TB GB;
  • Ram: 4/6 GB;
  • Main camera: 48 MP (f / 2.0, 26 mm) 8 MP (f / 2.2, ultra wide-angle, 13 mm) 5 MP (f2.4, macro camera) 5 MP (f / 2.2, depth sensor), PDAF, 4K / 30fps ;
  • Front camera: 32 MP (f / 2.2, 26mm);
  • Battery: 4000 mAh, fast charging 15 W;
  • Sim: 2 x NanoSIM (triple slot);
  • Wireless communications: LTE, Bluetooth 5.0, Wi-Fi 802.11ac, GPS GLONASS, FM radio, NFC.
  • Ports: USB Type-C (2.0), 3.5 mm jack;
  • Security: in-screen fingerprint scanner, Face Unlock;
  • Os: Android 10 OneUI 2.

The official price of the Galaxy A51 4/64 GB is 19,990 rubles, the 6/128 GB configuration is estimated at 22,990 rubles. The phone is available in white and black body colors.


  • 6.5 inches, SuperAMOLED;
  • 2400 x 1080 pixels;
  • Aspect ratio 20: 9.

The Galaxy A51 comes with a 6.5-inch FullHD display, which is covered with Gorilla Glass 3 with small 2.5d curvatures around the edges. The AMOLED panel used is clearly not of the flagship level, but in this budget it will be difficult for you to find a competing device with a better screen. The A51 is bright with excellent viewing angles, deep blacks and rich colors. Always on Display, Reading Mode and Dark Theme available.

The in-display opening for the front camera is less intrusive than the waterdrop notch, so you’re unlikely to have any problems with it. I can only find fault with the lack of the DC Dimming function, which almost all Chinese competitors have.

An optical fingerprint scanner is also integrated into the A51 screen. In the previous generation, he worked extremely mediocre, the novelty in this regard pleases more. The scanner is still unhurried here. Between the moment you put your finger on the sensor, until the phone is actually unlocked, there is a delay of about 1-1.5 seconds, but the A51 has an order of magnitude less errors in the scanner operation. In the vast majority of cases, it recognizes a finger the first time, but especially demanding users can use a faster face recognition function, and resort to using a fingerprint only in extreme cases.

Design and ergonomics

  • 159.5 x 73.6 x 7.9 mm, weight 172 grams;
  • Plastic body, Gorilla Glass 3 on the screen;
  • Headphone jack, Type-C.

Visually, the Galaxy A51 is fairly easy to distinguish from its predecessor. Unlike the A50, which had a teardrop notch display, the A51 is equipped with an Inifinity-O display, where the front camera is built right into the screen, like the flagship Galaxy Note 10. This solution made it possible to make a thinner top bezel, and the chin in the new product became much slimmer.

The smartphone looks expensive, but it is made of the same 3D Glasstic plastic as the previous generation. Visually, the surface of the backrest is difficult to distinguish from glass, it is decorated with a prismatic pattern that plays in the light much more elegantly than the already boring gradients from Chinese manufacturers.

The A51’s design is also refreshed by the rectangular main camera unit with L-shaped lenses. Once again, I note that Samsung is following the path of unifying the design of its devices: A51, A71, Galaxy S10 Lite, Note 10 Lite. All the company’s latest smartphones look almost the same and the upcoming flagship S20 is rumored to have the same design. The approach is controversial, but the owners of relatively budget models cannot but rejoice.

The A51 diagonal has grown from 6.4 to 6.5 inches, but due to the new aspect ratio of 20: 9 and thinner frames, the smartphone itself has become even a little narrower. The device lies comfortably in the hand, moreover, it is less slippery than analogues in a glass case.

All physical buttons. There are only three of them. Are located on the right side, at the same height as their predecessor. By default, if you press and hold the power button while the phone is on, it will launch the Bixby voice assistant. In the settings, the call of the assistant can be replaced by the activation of the standard shutdown menu, there is also an application selection for quick launch by double-pressing the power button.

The A51 retains all the important features of the previous generation, it has a triple card tray (left), a 3.5 mm jack and a Type-C port, which are located on the bottom end of the case. Also on the bottom is a multimedia speaker, the grille of which you will often cover with your hand while playing or viewing in landscape mode. At first it is a little inconvenient, but over time you get used to holding the smartphone correctly.

In terms of build quality, the A51 is doing well. The device feels soundly, in a protective case it should withstand daily use for several years without any problems, and repairing a plastic case, in which case, will cost less than replacing a broken glass.


  • Smartphone;
  • Type-C cable;
  • Charger 15 W;
  • Wired headset;
  • A clip to eject the SIM card.

A51 does not come with a case, which is a problem, since the device’s casing is made of plastic, which will quickly become scratched during use. Take care of this issue in advance.

Communication and interfaces

  • 2 x NanoSIM;
  • Bluetooth 5.0;
  • Wi-Fi dual-band 802.11 a / b / g / n / ac;
  • Nfc

The A51 is perfect for people who spend a lot of time on phone calls. It supports VoLTE and VoWiFi, can work in 4G networks from both SIM cards, and in general, I have not come across poor communication quality on this phone. The sound of the spoken speaker is loud and clear, the interlocutors are heard well.

The smartphone supports the NFC MST combination, which allows contactless payment at almost all POS terminals. In navigation applications, the GPS module determines the position of the smartphone with an error of 3-5 meters, but the search and connection to satellites takes a little longer than for smartphones based on Qualcomm chips. There is nothing to find fault with Wi-Fi and LTE, everything works stably and at high speeds.


Answer the question: “My smartphone is discharged in so many hours, is this normal?”. Impossible. To do this, you need to collect a lot of information.

In the middle mode. A couple of hours of music, a couple of hours of internet, 40 minutes of calls, messengers or mail in moderation. The device should work for about one or two days. But remember that everything is individual.

What to do if your Samsung Galaxy battery runs out quickly

How long should a smartphone or tablet run on battery

Battery life depends on several factors, not just capacity. The operating time is affected by:

Everything seems simple: if you use the device a lot, the battery will drain faster. But the operating time also depends on the load.

If the load is heavy: mobile Internet, movies, games with good photography. The device is discharged in a few (2-5) hours.

If the load is small: music, books, SMS, conversations. The device works longer (5-20 hours).

The more apps you have installed on your device, the faster your battery will drain. Quality is also strongly affected: poorly made applications constantly load the processor and prevent the device from falling asleep.

Over time, errors appear in the operating system. The reasons are different: they updated the firmware incorrectly, installed low-quality applications and removed them incorrectly, did not clear the memory of old files, etc. The more errors, the faster the battery runs out.

The usable battery capacity decreases over time. The older the battery, the less charge it can carry.

The worse the cellular signal, the faster the battery will drain. This is due to the fact that the transmitter of the device is forced to operate at higher power in order to maintain a connection to the network.

What to do if the battery runs out quickly

If you suspect something is wrong with your device and the battery is draining much faster than it should, try these tips:

The more apps you have installed on your device, the faster your battery will drain. Some applications affect so much that the battery runs out in a few hours.

To find out if apps are the problem or not, boot your device into Safe Mode. All downloaded applications do not work in safe mode. Those that were installed after purchase. Only system applications work. Those that were installed at the factory.

See how long a smartphone or tablet will work on a single charge in safe mode, and draw conclusions.

If the battery starts to discharge more slowly, then the problem is in some applications that were installed after purchase. Uninstall apps that you installed or updated recently and monitor the device until the battery runs out more slowly.

If your battery drains at the same rate in safe mode, try other tips.

If you are not using any system applications, disable them. Applications will “freeze” and will not work until they are turned on.

If you use a smartphone or tablet a lot and you do not have enough standard battery. Buy an external battery.

The external battery works as a portable socket:

Such batteries are available in different sizes and capacities, they have an affordable price, and they are universal. They charge everything that is charged from USB.

Usually, the screen is set to full brightness, which consumes a decent amount of battery power. To spend less, use automatic brightness control (if available). A special sensor analyzes the conditions in which the device operates and automatically sets the brightness level.

If the device does not have automatic adjustment, manually reduce the brightness to a comfortable level.

If your smartphone has two SIM cards, and you don’t use one of them, pull it out. The smartphone uses energy to maintain a connection to the cellular network and the battery will drain faster. Do not leave SIM cards in your smartphone that do not have a network in the area where you are (for example, tourist SIM cards).

If you do not use Wi-Fi, Bluetooth, GPS, NFC, or mobile Internet. Turn them off, they consume a lot of energy.

The easiest way to do this is to use the quick settings panel. To open it, swipe down from the top of the screen.

The worse the signal from the cellular network, the faster the device will drain. This is due to the fact that the transmitter of the device is forced to operate at higher power in order to maintain a connection to the network.

If you are often in places where there is poor or no mobile network coverage, use the “Airplane” or “Offline mode”.

In this mode, the mobile network is turned off and the device does not waste energy searching for it. This advice is especially relevant for tablets, tk. Sim card is used less frequently in them than in a smartphone.

Some accounts can sync data from the device memory, i.E. Make a copy and send to your account.

Imagine you have created a new contact on your smartphone. If it has a Google account and synchronization is enabled, the smartphone will immediately copy this contact to your account. If you enter this account on another device, the contact will be automatically loaded into the address book.

Synchronization is a handy feature, but it keeps the device awake by constantly checking for new data. To reduce the battery consumption of this feature, set up sync. Choose which data you want to sync automatically and what you want to sync manually.