Rating of TOP 7 best Power Banks for 10000 mAh: which one to choose, characteristics, reviews

Power Bank. How many times will it charge an iPhone / GadgetUfa

Power Bank or external battery will help you charge any device:

iPhone, iPad, a speaker and much more are also suitable, something that can be charged using a Power Bank.

A power bank is the same battery as in a smartphone, only with a larger capacity.

It also collects charge for a certain time and then can release it, i.e. charge, for example, an iPhone.

External batteries come in different capacities: 5000mAh, 10000mAh and 20000mAh.

Depending on the smartphone or device, the Power Bank will be able to charge it a certain number of times.

Let's show the example of iPhone 5, iPhone 6 and iPhone 7.

Calculated using the formula

(External battery capacity mAh)/(Smartphone battery capacity mAh*1.5)

Power Bank 5000mAh will charge from 0 to 100%

iPhone 5 – 2.1 number of times, iPhone 6 – 1.8 number of times, iPhone 7 – 1.7 number of times.

Power Bank 10000mAh will charge from 0 to 100%

iPhone 5 – 4.3 times, iPhone 6 – 3.7 times, iPhone 7 – 3.4 times.

Power Bank 20000mAh will charge from 0 to 100%

iPhone 5 – 8.5 times, iPhone 6 – 7.4 times, iPhone 7 – 6.8 times.

Power Bank buy 5000 mAh

External Battery Power Bank 5000mAh

990 RUR

Power Bank buy 10000 mAh

External battery Power Bank 10000mAh

1690rub

External battery Power Bank Pro 10000mAh

with fast charging function

2190rub

Power Bank buy 20000 mAh

External battery Power Bank 20000mAh

2990rub

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Current strength

Another parameter that is often used to mark the case of a universal battery and which is worth paying attention to is the current strength at the connectors from which devices are charged. The charging speed depends on it, and certain devices sometimes require compliance with specific parameters.

If the output connector supplies a current of 1 A (or 1000 mA), it is enough to charge a regular smartphone. The tablet will require a current of 1.5–2 A, and the iPad - 2.1 A. For those who use several devices at the same time, a more capacious battery with two connectors, with higher and lower current strength, is suitable.

What are mAh and Wh?

Battery Capacity Units

When choosing a portable jump starter (ROM), many people ask questions: “What do the mAh and Wh characteristics mean?”, “And why are they needed?”

We answer. Both values: mAh (milliamp-hour) and Wh (watt-hour) characterize the capacity of the charger. But it is most correct to focus on capacity, measured in watt-hours. And that's why.

Wh is an absolute constant capacity that most accurately describes the potential of a device.

And the capacity indicated in mAh is a relative value that describes the capacity of the device in relation only to a specific selected voltage. That is, for one voltage there is one capacitance, and for another voltage there is another capacitance. Often you can also see the designation “Ah” (ampere-hour). 1 Ah = 1000 mAh. Thus, to get the Ah value, you need to divide the mAh value by 1000. Conversely, to get mAh, you need to multiply the Ah value by 1000.

For example, the CARKU E-Power-3 battery charger has a capacity of 29.6 Wh or 8000 mAh (8 Ah).

At the same time, 8000 mAh is the nominal capacity, and it is indicated relative to the nominal voltage of the batteries built into the body of the starter-charger. All lithium polymer (LiPo) and lithium ferrum phosphate (LiFePO4) batteries used in starter chargers have a nominal voltage of 3.7 V. Many will ask: “How so? If the nominal voltage = 3.7 V, then why are the ROM outputs marked with values ​​of 5V, 12V and 19V?” The answer is simple: the voltage increase for one or another ROM output occurs due to the electronic filling of the device.

Thus, for a nominal voltage of 3.7V, the CARKU E-Power-3 ROM has a nominal capacity of 8000 mAh. From this value of nominal relative capacity, expressed in mAh, it is easy to obtain the value of absolute capacity, expressed in Wh:

1) first, convert the capacity value expressed in milliamp-hours to ampere-hours

8000 mAh / 1000 = 8 Ah

2) then multiply the resulting ampere hours by the voltage

8 Ah x 3.7 V = 29.6 Wh

Thanks to this ratio, it is easy to calculate the actual capacity in mAh of the CARKU ROM and any other battery at a specific operating voltage of a specific electrical consumer.

Let's make calculations using the example of the CARKU E-Power-3 ROM. This model has 2 outputs:

1) USB output for charging mobile phones, tablets, etc. with an operating voltage of 5 V. To calculate the actual capacity for this operating mode, it is necessary to divide the absolute capacity of 29.6 Wh by the voltage of 5 V, and then we get 5.92 Ah:

29.6 Wh / 5 V = 5.92 Ah (or 5920 mAh).

2) Output for starting a motor with an operating voltage of 12 V. Here the same formula is used to calculate the actual capacity:

29.6 Wh / 12 V = 2.467 Ah (or 2467 mAh).

As we can see from the calculations, the most obvious and correct value characterizing the capacity of the ROM is precisely Wh. And based on it, it is easy to calculate the capacity in mAh for a particular voltage and, therefore, approximately estimate the potential of the ROM for a specific electrical consumer.

The capacity values ​​in mAh for the CARKU E-Power-3 ROM, when correctly calculated for 5V and 12V, are not as impressive as for a nominal voltage of 3.7V, but this does not detract from the high consumer performance of this little one. The compact and lightweight E-Power-3 allows, for example, to fully charge an iPhone4 3 times or a classic Nokia 106 6 times, as well as confidently start 4-liter gasoline engines in summer and 1.6-liter gasoline engines in winter, which is confirmed by real tests and numerous videos on Youtube.

Some into the forest, some for firewood

In ROM descriptions and passports, first of all, it is necessary to indicate the capacity in Wh. Additionally, you can indicate the nominal capacity of the ROM in mAh, paying tribute to the historically popular dimension, easily recognized by the mass consumer and widely used for power banks (external batteries), batteries for mobile phones, tablets, etc.

All CARKU ROMs have an absolute capacity in Wh and a nominal relative capacity in mAh. Some manufacturers incorrectly indicate the ROM capacity only in mAh, reflecting a secondary capacity characteristic and completely forgetting about the most important one.

There are also situations where some sites indicate inflated specifications in mAh. For example, the absolute capacity of the CARKU E-Power-Elite ROM is 44.4 Wh, which means its nominal capacity is 12000 mAh (44.4 Wh / 3.7 V = 12 Ah). Therefore, there cannot be a CARKU E-Power-Elite ROM with an absolute capacity of 44.4 Wh and at the same time with a nominal capacity of 14000 mAh or 15000 mAh, as some sales companies indicate.

It is also worth keeping in mind that the vast majority of portable starter-chargers currently presented on the Russian market have an actual capacity much less than the declared one. For example, 5000 mAh instead of 8000 mAh, 8000 mAh instead of 14000 mAh, etc. The difference between the declared and actual capacity sometimes reaches 2 or more times. This is a very common situation, because it is very difficult for the consumer to check the actual capacity, much less measure it. In turn, the actual capacity of the CARKU ROM fully corresponds to the declared one. This is confirmed, for example, by an independent review of the Russian ROM market and comparative testing by AutoWorld magazine, in which the CARKU ROM demonstrates a greater number of launches than analogues with a larger capacity.

Why is it so important to pay attention to ROM capacity? Because the duration of autonomous operation of electrical consumers powered from the ROM directly depends on it. The capacity of the ROM is especially important in the winter when starting a vehicle engine, since the larger the capacity, the more attempts there will be to start the engine and their duration, and, consequently, the likelihood of a successful start. In addition, the battery is the main element of the ROM, so the cost of the ROM directly depends on its capacity. So keep this in mind when choosing a ROM for yourself.

Universal external battery as a business gift

Humanity of the 21st century is rapidly becoming more and more mobile.

Is it any wonder that the universal power bank has become one of the most trendy gifts in the world in recent years?

Power bank is a win-win option for a useful gift for a business partner. It will be gratefully received and will instantly take its place among your supplier's or buyer's favorite gadgets. How convenient an external battery will be, how long it will be used (and how often a kind word will be remembered for your company) depends almost entirely on you. Approach your choice thoughtfully, choose a reliable, capacious, compact and safe device - and it will serve its owner for no less than the 500 charge-discharge cycles indicated in the passport, that is, at least a year and a half.

Companies from a wide variety of industries can use the gift function with a successful slogan. A charge of energy and vigor, a “second wind”, a fresh impulse - all these concepts successfully emphasize the essence of the subject itself, while simultaneously describing your service or product.

And such a gift is also a great way to encourage your own employees, while at the same time increasing labor discipline. Give batteries to managers working at remote sites or visiting clients, and see if they answer the question: “Why didn’t you call the office?” continue to answer “the phone is dead.”

Understanding the capacity (mAh) and charging efficiency of a portable Power Bank

Common Misconception

The unit of measurement milliamp-hour (mAh) is commonly used to indicate the capacity of a battery. One of the common misconceptions is that we can measure the battery capacity of a power bank using the battery capacity of a smartphone/tablet to find out how many times we can use this power bank to charge them. But this algorithm is not correct.

Volume and energy are different concepts

Simply put,
Ampere-hour (mAh) is a unit of electrical charge that represents the volume of a battery, and Watt-hour (Wh) is a unit of electrical energy .
Watt Hour = Amp Hour x Voltage

A capacity of 10400 mAh means that this battery is capable of providing a total charge of 10400 mAh at a certain voltage . As for the lithium-ion battery, most of its charge is transferred at a voltage of about 3.7V, so the total power of a 10400 mAh battery is theoretically 10400 mAh x 3.7 V = 38480 mWh , which is approximately 38 Wh .

Determining the number of charging cycles of a Power Bank

Let's take the TL-PB10400_V1 battery as an example.

TL-PB10400_V1 – lithium-ion battery with a capacity of 10400 mAh. When we use the TL-PB10400_V1 to charge other devices, its output voltage is 5V, as is the case with many other chargers.

Thus, the total available electrical charge output in theory is 38480 mWh / 5V = 7696 mAh. The internal circuitry of the device must consume some amount of power, so the efficiency cannot be 100%. Considering that the actual discharge efficiency of the TL-PB10400 device is about 90% at 1A current, the TL-PB10400 actually delivers an electrical charge that is equal to 7696 mAh * 0.9 = 6926 mAh.

Note: Discharge efficiency is less than 90% at 2A current.

You can now divide 6,926 mAh by your smartphone's battery capacity to determine the number of charge cycles possible. For example, 6926 mAh can fully charge a device with a 2600 mAh battery about 2.5 times (6926 mAh / 2600 mAh = 2.66 times). But this still assumes ideal conditions.

In fact, the internal circuitry of a smartphone/tablet also consumes some energy. As a result, only part of the Power Bank's charge will end up in the smartphone/tablet battery. So you can get less than 2.4 cycles from the example above. In addition, different devices may have different charging efficiencies depending on their different internal designs, so the charge cycle may differ even between two devices with the same battery capacity.

In addition, if the smartphone is running or the screen, Wi-Fi module, CPU, or other components are on while charging, it consumes more power, making charging efficiency even lower.

The final charging efficiency of other battery devices (smartphones/tablets) is also determined by their own design using the same principles as described above.

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A little about portable batteries / Sudo Null IT News

Hello, dear friends! When choosing a portable battery, you may encounter a large number of negative reviews regarding the discrepancy between their declared capacity and the number of charged gadgets. It would seem that having bought a 13,000 mAh charger, we should charge our smartphone with a 2300 mAh battery about 5.5 times! But it's not that simple.

A little background

As a lover of gadgets and modern technologies, I have a smartphone and other good things. And along a certain path I encountered one, in my opinion, serious problem with advanced devices - they have a relatively short battery life. Yes, I won’t argue, there are telephone-making “monsters” that have batteries of 4000 mAh or more. But, often, such devices are extremely rare and have other disadvantages. In any case, even if your gadget can last until the evening (and my Nexus 5 with 2300 mAh is not on this list), sooner or later the question of buying a portable battery arises. Like many geeks, I have been itching to buy this type of device for a long time. I was considering the options of buying a box for 18650 batteries, as well as a ready-made device (which most likely contains the same 18650 batteries, just like laptop batteries). As a result, the need arose to have a charged phone at work in the absence of an outlet, and a portable battery DF TRIO-02 was purchased. To be honest, I didn’t have much time to choose and read reviews. I just quickly combed through one well-known online store (the one that is part of a group of companies along with a bank and a jewelry store) and selected it according to the following criteria:

• required capacity
• price quality
• appearance (yes, yes, you need to strive not only for ergonomics, but also enjoy aesthetically)

Briefly about this very device

Pros:

1. good capacity
2. two outputs of 5V, 1A; one output 5V, 2.1 A
3. microUSB battery charging input

Minuses:

1. Stainless glossy case

Arithmetic for calculating capacity

For ease of calculation, we introduce the following assumptions
:

1. We take the efficiency of the voltage converter as 100%
2. we accept all indicated capacities as real values
3. We assume constant values ​​of current and voltage during charging
4. The phone charges from ideal 0% to 100% (without taking into account the residual charge provided by manufacturers, etc.)

To eliminate the inaccuracy, let's take a look at Wikipedia:

The maximum possible useful charge of a battery is called the charging capacity, or simply capacity.
Battery capacity is the charge given off by a fully charged battery when discharged to the lowest permissible voltage. In the SI system, the capacity of batteries is measured in coulombs; in practice, a non-systemic unit is often used - ampere-hour. 1 Ah = 3600 C. The battery capacity is indicated by the manufacturer. Not to be confused with the electrical capacitance of a capacitor. Nowadays, batteries are increasingly indicated with energy capacity - the energy given off by a fully charged battery when discharged to the lowest permissible voltage. In the SI system it is measured in joules; in practice, a non-systemic unit is used - watt-hour. 1 Wh = 3600 J.

On the packaging we have a proud inscription: “13000 mAh”.
This is our charging capacity. Looking carefully at the sticker on the back side we see the following. Voltage:

3.7 V.
Charging capacity:
13000 mAh.
Energy capacity:
48.1 Wh.

It turns out that many manufacturers indicate the stored charge in mAh (mAh), but the operating voltage of the device is also important.

To the fullest extent, “capacity” is characterized by stored energy.

People often confuse the concepts of stored charge

and
stored energy,
calling it “capacity”. If great accuracy is not needed, then we can assume that the stored energy (in Wh) is approximately equal to the product of the stored charge (in Ah) and the average voltage (in Volts).

1 Wh = 1 V 1 Ah.

Now, having understood the concepts, let's move on to our example: 48.1 Wh of battery is 13 Ah (13000 mAh) multiplied by 3.7 V. So far everything fits. But, our device is charged from an output of 5 V. Therefore, the charge that our device is capable of delivering is found as a quotient of the stored energy and the output voltage. 48.1 Wh / 5 V = 9.62 Ah (9620 mAh).

Analyzing

Now you can easily calculate “how many times can I charge my device.” So, the same Nexus 5 can be charged: 9620 mAh / 2300 mAh = 4.18 Or, in other words, a little more than 4 times
. What's against 5.5

Drawing conclusions

The calculated battery capacity of 9620 mAh was 26% less than the 13000 mAh we see on the box.
And 26% less than what a user inexperienced in calculations would expect. Although, in fact, the manufacturer did not deceive us at all. It's just a marketing ploy. Useful articles and sources: » Electric capacity » Electric battery » Amp-hour

Baseus Wireless Charger 10000 mAh WXHSD-D01 / D02

• Interfaces : USB-C, USB-A
• Dimensions: not specified
• Weight: not specified
• Fast charging : yes, Quick Charge 3.0, USB Power Delivery
• Wireless charging: yes

Price: from 1,750 rubles

This power bank impresses with its thoughtful design and construction, as well as the availability of fast and wireless charging. It is made of polycarbonate and has retractable legs that will hold the device and smartphone in an upright position - so you can watch a movie or read a book without interrupting the charging process. There is a small display to show the remaining charge. The downside is that users note very slow wireless charging.

I bought a 5000 mAh Powerbank, how many times will it take me to charge my phone?

It depends on what phone it is.

Depends on the battery capacity of your phone)

You take out the battery and see how much mAh there is - divide it by 5k.

look at the capacity of the battery in your phone and divide the capacity of the bank by it

Check it out and tell us! Do you think we know how much mAh really is?

fuck the math here - you need to divide the capacity of the POWER BANK by the capacity of the phone battery

and this depends on the capacity of the battery on the phone ;))

my 2800 won’t charge half of it :)))) this crap isn’t worth the money

I think 2.5 times is if an honest power bank now writes in capital letters 10,000 mAh, but you check there a maximum of 4,000

I think 2.5 times is if an honest power bank now writes in capital letters 10,000 mAh, but you check there a maximum of 4,000

I think 2.5 times is if an honest power bank now writes in capital letters 10,000 mAh, but you check there a maximum of 4,000

Why is a power bank 18000 mAh and a phone with 1700 mAh only charged once?

My 4000mAh Vertex battery charges a 1900mAh smartphone battery fully once, and a second time to about 85% - 90%. A battery with a capacity of 5000 mAh will be able to charge an average smartphone approximately twice, but only if its capacity is indicated by the manufacturer without deception. The calculation is simple: to subtract losses and find out the net efficiency, multiply 5000 by 0.85 and get the desired number. In your case this will be 4250 Mach. Then divide 4250 by the battery capacity of your smartphone, and as a result you will find out how many times you can charge your smartphone with this external battery if the manufacturer did not deceive you and indicated the capacity correctly.

The best option is to buy the box and batteries separately, then you can make an honest power bank

I think 2.5 times is if an honest power bank now writes in capital letters 10,000 mAh, but you check there a maximum of 4,000

There is a table in the link. if honest power bank https://powerjuice.ru/how-much-energy

It all depends on the battery capacity of your phone. Now new phones have an average of 2000 - 3000 mAh, there is more, there is less. Specifically in the situation with your phone, there will definitely be enough for 2 full charges, or even almost 3. An excellent option would be to buy a power bank at https://www.100suvenirov.ru/power-bank-pauer/ I personally ordered it there for myself, very high quality product.

ZMI QB910

• Interfaces : microUSB, USB-C, USB-A
• Dimensions: 7.2 x 14.06 x 1.59 cm
• Weight: 210 g
• Fast charging : yes, Quick Charge 3.0, USB Power Delivery
• Wireless charging: no

Price: from 1,600 rubles

An interesting appearance with a fabric surface in gray or mint color, support for fast charging and several charging outputs - this is the ZMI QB910 power bank. It also has a charge indicator. The model does not boast any special characteristics, but it is perfect as a stylish accessory for quickly charging a smartphone.

How long will a phone with a battery capacity of 3400 mAh last?

depends on the hardware, number of SIM cards and operating system. Usually it lasts for two days, but my Asus 5,000 mAh lasts for a week

depends on the user, some for a week, some for half a day

In short, we measure the phone’s consumption in milliamps and then divide the battery capacity by consumption.

For a button operator - for a week or a little less. For a smartphone - for two days.

from 3 hours to 2 days depends on model, firmware, applications, use

The MAH hours in the battery do not in any way determine the number of hours of battery life. Household example. LED lamp with a consumption of 15 W and a source of 10 kW: 10 kW/1000= 10000 W 10000 W: /15 = 666 hours of battery life. Incandescent lamp with a consumption of 150 W and a source of 30 kW: 30,000 W /150 = 200 hours of battery life. Conclusion: the battery does not currently determine the autonomy of operation, which was what needed to be proven.

In general, this is a normal battery. I would say above average. but as already said, it all depends on the user. I have about the same battery, and it’s enough for me; I can sit on YouTube for about half a day and only charge it at the end of the rest of the day. If you don’t actively use it (for example, log into VK a couple of times a day, receive calls), then it may be enough for a week. In general, it’s up to you, in my opinion he’s an excellent Akum

At 8 kilometers