Buying a new smartphone is always accompanied by excitement and a desire to turn on the device faster. However, before pressing the activation button, many users are worried about the question of proper primary charging. There are many legends surrounding lithium-ion batteries that, unfortunately, often lead to wrong actions and even a decrease in battery life.
Today’s Xiaomi, Redmi and POCO smartphones are equipped with advanced power controllers that are radically different from the technologies of a decade ago, which is why old methods of pumping the battery can be not only useless, but also harmful.
The main goal of the first turn on is not to rock the battery, but to correctly calibrate the software indicator of the charge of the Android operating system and the HyperOS or MIUI shell. This will allow the system to accurately display the remaining operating time and correctly manage power consumption in the future. Ignoring simple rules can lead to the phone suddenly turning off at 15% charge.
📊 What is your current smartphone Xiaomi?
Redmi Note
Xiaomi (Mi)
POCO
Black Shark
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Myths about “swinging” and the memory of the effect
The most common myth is that a new phone must be “zero” and charged continuously for 12 hours, a tip that is relevant for nickel-cadmium batteries, which had what is called a “memory effect,” and they really required the device to fully discharge to “remember” its full capacity.
In the case of lithium polymer and lithium-ion batteries used in all current Xiaomi models, the situation is different: deep discharge to the state of shutdown is harmful to the chemistry of modern cells. The charge controller specifically blocks the discharge before the voltage drops to a critical level to prevent degradation.
⚠️ Warning: Leave the phone to discharge until completely turned off and leave it in this state for a long time (several days or weeks) is strictly not recommended. This can lead to a deep discharge, after which the power controller will block the charging, and only the service center will be able to revive the device.
So the term "rocking" in the context of 2026 means only software calibration, not physical impact on capacity. You don't have to artificially create full-discharge cycles. By contrast, current BMS algorithms optimize charging processes in the background.
What are recharging cycles?
Recharging cycle is a process of full discharge and subsequent battery charge from 0% to 100%.It is important to understand that one cycle does not necessarily have to occur at a time. For example, if you discharged the phone by 50%, charged it and then discharged it again by 50% - this will be considered one full cycle. The resource of modern batteries is from 800 to 1000 such cycles to lose 20% of the original capacity.> Preparing for the first turn on Before connecting the cable to the newly purchased smartphone, it is worth conducting a visual inspection of the configuration. Although Xiaomi is famous for reliability, when transporting the analogue Delivery, the original USB-C device has a quick charge or visible defect. Cheap Chinese power supplies without labels can produce unstable voltages, which are dangerous for the power controller: 🔌 Check the charging port for dust or factory protective film. 🔌 Use the cable from the kit, as it is designed for high-power currents. 🔌 Connect the power supply to a serviceable socket with grounding. If you plan to activate the phone right away, make sure that the charge level is at least 20-30%. Factory charging is usually in range 40-60%, What's best for long-term storage in a warehouse, however, if the indicator shows less 15%, The first charging process does not require complex manipulations, but following the sequence of actions will help the system to correctly read the parameters of the battery. This is especially important for the optimized charging function, which is trained in your habits. First, connect the cable to the smartphone that is off. Wait for the Mi or Redmi logo to appear and the lightning animation on the screen. If the phone doesn't respond, press the power button on the phone. 10-15 After the image appears, you can turn on the device. Then follow the algorithm: Turn on your smartphone and go through the initial setting (language selection, Wi-Fi). Don't load the processor with heavy games or installing dozens of applications during the first charge. Let the device charge to the first charge. 100% in the off or on state (preferably off for calibration accuracy) after reaching 100% Keep your phone on charge again. 30-60 This approach allows the balancing controller to level the voltage in all cells of the battery. This is especially true for models with more capacity. 5000 mAh, where elements may have slight differences in characteristics. ☑️ Checklist of the first charge Connect the original cable:ok:Use a serviceable socket:ok:Charge to 100% without interruptions:ok:keep on charging for another hour:ok:completed: 0 / 1 After you've charged the device to its maximum, it's recommended that you perform a calibration procedure. It helps the operating system understand where the actual limits of battery capacity are. 100%, but quickly sits down, or turns off when 10%. To perform calibration, perform the following steps: 🔋 Discharge your phone before automatically shutting down naturally. 🔋 Try turning it on again; if it's turned on and shows charge - discharge further. 🔋 Put a fully discharged phone on charge (you can switch off) and charge to 100%. After that, you can use the smartphone in normal mode. Android will write down new values of the minimum and maximum voltage. 2-3 month if you notice an incorrect display of the percentage of charge. ⚠️ Attention: Do not complete discharge (before switching off) more than once a month. Frequent deep discharges accelerate the chemical aging of the lithium battery. For everyday use, keep the charge in range 20-80%. Modern Snapdragon and Dimensity processors used in Xiaomi smartphones have very efficient energy saving schemes, but it is the software part that sometimes gets it wrong in predicting the running time. 💡Battery calibration is a software procedure for synchronizing the indicator readings with the real charge of the cells, and not a way to increase the physical capacity of the battery. HyperCharge, Turbo Charge and Quick Charge technology can fill the battery extremely quickly, but when you use it, it is important to understand how the thermal control system behaves. In the first cycles, the heating may be more noticeable, since the thermopaste and graphite pads have not yet "gone dry (67 Watt, 90 Watt, 120 Watts and above: the phone can heat up to 40-45 This is normal for fast charging, but it requires compliance: 🌡️ Remove the thick protective cover if it interferes with heat removal. 🌡️ Do not cover your phone with a cloth or pillow while charging. 🌡️ Try not to use heavy applications during fast charging. In the shell. MIUI And HyperOS has optimized charging, and it learns your sleep schedule, so if you put your phone on overnight charging, it'll charge up to 80 percent, stop and pick up the rest by the time you wake up, and it'll significantly extend the battery life. To activate this function, go to the Settings menu → Battery → Battery protection → Optimized charging. Make sure the switch is activated. The system will start analyzing your habits after a few days of use. Why does the charging rate drop after 80%? The last 20 percent of the capacity is charged with a lower current (saturation mode) to avoid overcharging and overheating.> Table: Charging technologies Comparison Different Xiaomi models support different standards. Understanding the capabilities of your device will help avoid the use of inappropriate accessories. Max Power Charging Time (approximately) Standard Charging Requirements 10-18 W 2.5 - 3 hours Any USB Quick Charge 3.0/4+ 18-27 W 1.5 - 2 hours Cable with support for QC Turbo Charge 33-67 W 45 - 60 min Original 6A HyperCharge 90-200+ W 15 - 25 min Special cable and Xiaomi unit Use of less power is safe - the phone will simply charge more slowly. However, connecting a weak cable to a powerful unit will limit the speed of the phone to the most common errors in the use of the battery, even users often pay attention to the battery. This causes simultaneous heating from the processor and from the passing current, which is stressful for the battery. Another mistake is constantly using the phone until it's completely turned off. 40-60%. If you keep the device for long periods of time without use, leave it about half charged and off. ⚠️ Warning: Never use damaged cables or power supplies with a loose socket. Power surges or short circuits can burn the power controller on the motherboard, which is expensive to repair, and extreme temperatures should also be avoided. Do not leave your smartphone in the sun in the car or in the cold. the operating temperature range is usually from 0 before 35 Going beyond these limits can lead to irreversible changes in the structure of the electrolyte. Recommendations for extending the service life So that your Xiaomi enjoys fast work even through the 2-3 So, you can try to make good habits, and it's not necessarily fanatical to keep track of every percentage, but the general mode of operation is a factor in degradation. 20% before 80%. If you're at home or in the office, it's better to recharge your phone than to wait for it to run out. Frequent short recharges are less harmful than full cycles. Regularly update your software. Xiaomi engineers are constantly releasing patches that improve battery algorithms and correct background process errors that can cause the phone to "heat up." Do I need to buy special applications to save battery? 2026 Third-party applications-cliners (Clean Master and analogues) are more likely to harm than help. They're constantly hanging in memory, consuming resources, and the built-in MIUI and Android are much more effective at controlling background processes. The only thing worth doing is checking the application access rights in the battery settings. Is it true that overnight charging is bad for the phone? This was the case for older phones. Modern Xiaomi smartphones have double protection: they turn off the current when they reach 100% and turn it on only when the charge drops. However, turning on the Optimized Charging feature will further protect the battery from prolonged battery stay under voltage. What to do if the phone warms up on the first charge? Moderately on the cable, you can try to charge it at 40 degrees, or a quicker, if you can use. The problem may be poor accessory, and following these simple guidelines will keep the battery capacity high throughout the life of the device, and remember that the battery is a consumable, but the right handling will delay the replacement by several years.