How to check charging cycles. How to find out how many charge cycles an iPhone battery has gone through
iPhone battery discharge/charge cycles
Like any part, the battery has its own resource. Battery life is determined in cycles. This is the number that determines how many times the battery has been fully charged. Charging a battery from 50% to 100% is considered a half cycle, charging from 25% to 50% is a quarter cycle, and charging from 0 to 100% is a full cycle.
If the number of cycles reaches 350-400, then you can already noticeably feel the lack of battery capacity. At 500 cycles, the battery capacity is reduced to 60-80% of the nominal capacity that is present in new batteries. 500 cycles are achieved after 1.5-2 years of iPhone use.
Normal temperature for iPhone work 0°C to 35°C
Low temperatures for Li-Ion iPhone batteries
At low air temperatures (from 0 °C and below), the iPhone battery capacity drops by up to 40-50%. When the battery temperature is restored, the capacity is restored. However, a common reason for contacting our service is that the iPhone turns off in the cold; the charge level indicator can vary greatly, from 60% to 5%, etc. The reason for this phenomenon is low temperature + the battery life is coming to an end. There is only one indication - replacing the battery. A working battery should reduce capacity, but not turn off the iPhone.
High temperatures for Li-Ion iPhone batteries
At high air temperatures (from 35 °C), the iPhone battery degrades. If you remove the battery from the iPhone, we will immediately see that it is “swollen”; in our service we call such batteries “pregnant”. If the battery was very hot and swollen, then only replacing it will help; it will not heal itself, even if it cools down. It is extremely important not to leave your iPhone in the sun or on a hot surface. The problem can be seen if you look at the display under the rays of light - the bulge must be replaced because The battery is pressing on the display.
iPhone battery not charging correctly
iPhone batteries are extremely sensitive to charge voltage. According to Wikipedia, a change in voltage of just 4% can reduce the battery capacity by almost half. The charging current depends on the voltage difference between the battery and the charger and on the resistance of both the battery itself and the wires connected to it. In fact, this means that the block charger determines the battery voltage and adjusts the voltage supplied to the battery for charging. Original blocks, as well as units from high-quality manufacturers know how to do this, Chinese chargers, alas, do not know how, the same applies to car chargers. If you want to extend the life of the battery, but use car charging, do not connect the iPhone to the charging cord at least while starting the engine, at this moment the voltage may jump.
When should you change your iPhone battery?
- When the number of cycles has reached 500;
- If iPhone more 2 years;
- When the iPhone turns off spontaneously in cold weather;
- When the battery is swollen.
- When the battery lasts for half a day or less.
How to Check iPhone Battery Cycle Count?
Checking on Mac using Coconubattery
At the top right, click on the iOS Device icon, then look at the line Loadcycles, on the contrary, we see the number of battery cycles, in this case it is 190, which means a quite good battery.
Checking on iPhone using Battery Life
We flip the application screens from right to left until we see the following statistics. We look at the line Cycles, on the contrary, we see the number of battery cycles, in this case it is 317.
The application will also show the current battery capacity and charge consumption in mA/hour.
Buying modern computers MacBook Pro or Air (and other Apple devices), users sooner or later ask themselves the question of how long the built-in battery will last and how many recharge cycles it will withstand.
Indeed, many users are accustomed to open access to the battery of their devices and the ability to dismantle it with bare hands. In this case, questions usually do not arise; the dead battery can simply be replaced with a new one.
But modern Macs offer us built-in (as in the Air and Pro line) or even glued into the body (Pro Retina) batteries. Is Apple really that confident in its products? More on this later.
What is a recharge cycle
Your computer's battery usage level is expressed by the term recharge cycle. A recharge cycle means using all the battery power and then recharging it.
If you used half the battery charge on the first day, then charged it to 100% and used another half the next day, this will count as one recharge cycle.
In other words, the recharge cycle is a complete depletion of the battery and subsequent recharging, or depletion by 25% four times, or by 10% ten times, etc.
Therefore, it may take several days to complete a full recharge cycle.
Power and battery charging
If most of the time the computer is used from the power supply, unplug it every 2-3 days and use the battery until it reaches 50% charge, after which you can connect the charger again. This will keep the electrons moving and extend the life of the battery.
There may be times when your battery will stop charging between 93% and 99% - this is normal. The batteries are specially designed to avoid short discharge/charge cycles to extend their life.
When fully charged, the LED on the MagSafe charging plug will turn green. This indication means that the battery has stopped charging and the computer is running from an external power source with a fully charged battery.
Also, nothing bad will happen if you leave your MacBook connected to the network in sleep mode.
Battery life
Each recharge cycle slightly reduces the battery capacity. But the batteries of your Macbook, iPhone or iPad can be quite subject to a large number cycles until the capacity is significantly reduced.
The built-in batteries of modern MacBook Pros and MacBook Air designed to perform 1000 full charge and discharge cycles until the capacity decreases to 80% of the original.
This does not mean that when this mark is reached, the battery will stop working and its further use is impossible. You can continue to use the battery at 79% capacity and 1001+ cycles as long as it holds a charge.
If your MacBook's battery does not meet these requirements, it may be defective. In this case, contact AppleCare support and ask them to replace it with a new one.
The table below shows the maximum number of recharge cycles for different models MacBook.
Checking the battery status
To check the battery status, you can use iStat Pro(for free), coconutBattery(free, may display incorrect information) or using Mac OS: Option + > System Information > Hardware > Power.
The health of your battery is represented as a percentage or mAh and is the current full battery capacity (mAh) compared to the ideal full capacity (100%). But you should not completely trust the battery health readings, since this is a floating value and can change both down and up.
It's normal for your brand new MacBook's battery health to be a little more or less than 100%, or to fluctuate up or down over time. The health of the battery can change not only downward.
Thus, today the battery status may be at 94%, and in a couple of days it may rise to 97%.
Apple creates products to last. The built-in batteries in the current MacBook Pro line are a case in point. Other laptop batteries only last 200-300 recharge cycles. Whereas MacBook batteries can be charged up to 1000 times and last up to 5 years.
Thus, using one battery in a Mac, we can change up to three batteries in a regular laptop in the same period of time. This saves us money, creates less waste, and extends the life of your MacBook.
)Doesn't it already need to be replaced?..
iOS devices are equipped with a built-in lithium-ion ( Li-ion) battery with polymer electrolyte ( Built-in rechargeable lithium-ion battery).
The maximum "life" of a Li-ion battery is achieved when the charge is limited to 95% and the discharge to 15-20%. This operating mode is automatically supported by the monitoring and control system BMS(), which is included with any lithium-ion battery.
The batteries are charged via a USB port or from a USB power adapter ( Apple USB Power Adapter).
iPhone/iPod power adapters provide an output voltage of 5V and a current of 1200mA.
iPad power adapters provide an output voltage of 5.1V and a current of 2100mA.
Big-Brother-Apple-Core guarantees that properly operated iPad battery will retain at least 80% of the original charging capacity after 1000 full charging cycles ( complete charge cycles).
An iPhone battery should retain at least 80% of its original charge capacity after 500 full charge cycles.
The iPod battery should retain at least 80% of its original charge capacity after 400 full charge cycles.
How to find out the number of completed charge/discharge cycles of your iOS device's battery?
This information is stored by the iOS device, but there is no direct access to it.
To do this you need to use, for example, iBackupBot:
– install following the installer’s instructions;
- run ;
– connect to your iOS device;
- In chapter Devices select your iOS device;
- In chapter Battery in the window that opens, find the line CycleCount.
It can be seen that the iPhone battery capacity after 712 full charging cycles is almost 84%. This is within normal limits.
Notes
1. The operating principle of the battery is based on the reversibility of a chemical reaction. The performance of the battery is restored by charging - by passing electric current in the direction opposite to the direction of current during discharge.
2. The maximum possible useful charge of the 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. Battery capacity is measured in pendants, in practice, an off-system unit is often used - Ampere-hour. 1 A h = 3600 Cl.
3. There is a term energy capacity, is the energy given off by a fully charged battery when discharged to the lowest permissible voltage. INit is measured in Joules, in practice, an off-system unit is often used - watt-hour. 1 W h = 3600 J.
4. The energy capacity of iOS device batteries is different, for example:
– iPad 2 – 25 Wh (6757 mA h; – 3.7V);
– iPad 4 – 43 W h (11622 mAh;– 3.7V);
– iPhone 4S – 5.3 W h (1432 mAh;– 3.7V);
– iPhone 5 – 5.45 W h (1434 mAh;– 3.8V).
Every Apple iPhone comes with a lithium-ion battery. And only a few users know that this battery has a so-called lifespan. This resource is measured by recharging cycles, and each device is designed for a certain number of cycles. In this article we will tell you how to evaluate the iPhone battery, how long it will last, and how to check the number of charging cycles.
Number of iPhone recharge cycles
In fact, every phone has information about the number of battery charging cycles. Unfortunately, Apple prohibits third party applications report this data, therefore, to check this information, you will need to connect your phone to your computer and download free program. Which one? We'll tell you a little later.
For reference:
A battery charge cycle is when you have charged your phone to 100%. If you first charged your iPhone to 25%, and then to 75%, in total these two charges will be considered one 100% cycle. Naturally, the battery cannot last forever. Here is the data on how many cycles the batteries of different Apple products are designed for:
iPhone - 80% charge retention up to 500 cycles
Apple Watch - charge retention 80% up to 1000 cycles
iPad - 80% charge retention up to 1000 cycles
iPod - 80% charge retention up to 400 cycles
MacBook - 80% charge retention up to 1000 cycles
How to check the number of iPhone recharge cycles completed
If you're using a Mac, you'll need to download it first. free application Battery. This program Shows detailed battery statistics from any Apple device, including current charge, full capacity, design capacity, device model name, manufacturing date, number of cycles and battery temperature.
If you use Windows, you can use the free trial version iBackupBot. The program is not new, but it still works properly. With its help you can also check all the necessary parameters.
Please note that if your device’s battery is slightly worn out, it is not necessary to buy new iPhone. A rational solution would be to replace the battery with a new one.
All Apple smartphones and tablets come with Li-ion battery, which allows iPhone and iPad to work without the need to be constantly connected to a source of electricity. Unfortunately, everything lithium ion batteries have their own life cycle, which is measured by the number of charging cycles.
The battery of any generation iPhone and iPad is designed for approximately 500 charge cycles. This means that the device must be discharged to a total of 50,000%. It is worth noting that one charging cycle is equal to 100%. For example, if you discharge your iPhone or iPad to 25% in one day, charge it overnight, and start using it again in the morning, then one cycle will end when it reaches 75%.
If you calculate, then 500 charging cycles for iPhone and iPad is about 1.5-2 years of daily use of the device. After this period, the battery loses approximately 20% of its capacity and also becomes more vulnerable to temperature changes, due to which the iPhone even with 25% of the remaining charge.
Upon reaching the 1000 cycle mark, the battery capacity of the iPhone or iPad will drop to 50%. On average, this figure can be achieved within 3-4 years of using the device. This period is best to visit service center, because with half the capacity, the iPhone can hardly work for 2-3 hours with the screen on.
If the device was purchased on the secondary market, then find out the condition battery iPhone or iPad is quite problematic. It is for such cases that the definition of “Cycle” exists. You can find out the number of charging cycles using the program Battery Life, available in the app store.
In the Battery Life program menu, you need to select Raw Data, and then look at the Cycles value, which displays the number of battery charging cycles.
You can also find out this data using a computer on Windows based or Mac OS X. To do this, you will need to download and install iBackupbot. After launching the program, you need to connect your iPhone or iPad to your computer, and then select the connected device in the Devices section.
On the page that appears, you will need to click on More Information, which contains the CycleCount indicator. It displays the number of battery charging cycles.
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