Buying a new smartphone is always an exciting moment, especially if you chose a Xiaomi device known for its price-performance balance. However, immediately after unpacking, many users have a natural question: should you do any special actions with the battery before turning on? There are many myths surrounding lithium polymer batteries that often go back to the era of old nickel-cadmium batteries.
Modern gadgets, whether the flagship Xiaomi 14 or the affordable Redmi Note, are equipped with sophisticated power controllers that control the charging process at the hardware level.This means that the system itself decides when to reduce the current or completely turn off the power supply.
In this article, we will discuss the real-world recommendations of engineers and experienced users so that you can immediately start using your new device without fear of damaging it, you will learn whether to discharge the phone to zero and how to set up the system for maximum autonomy.
First steps: unpacking and primary charging
When you take a new smartphone out of the box, its battery typically has a charge of 40 to 60 percent, which is the optimal level for long-term storage of the device in stock before sale, as it minimizes the chemical degradation of the elements. Many users mistakenly believe that before turning on the phone must necessarily charge up to 100 percent.
In fact, today's lithium polymer batteries don't have the memory effect that was typical of old technologies. You can safely turn on the device, complete the initial setup of MIUI or HyperOS, and then connect it to the network. Moreover, turning on the phone while charging allows you to immediately check the health of the screen and touchscreen.
⚠️ Note: If the charge indicator shows 0% and the phone does not respond to the power button, leave it on charging on 15-20 I'm not sure if you're going to be able to get a deep discharge from long-term storage.
Using the original charger that comes with the package (or a certified analogue that supports Power Delivery or Quick Charge protocols) ensures that the power controller receives the correct data on the permissible power.
Breaking Myths: Calibration and “training” of the battery
One of the most enduring myths is that a new phone needs to be completely discharged three times before it turns off and then charged to the point of zero, a process called “calibration.” For today’s Xiaomi, POCO and Redmi smartphones, this procedure is not only useless, but potentially harmful.
Deep discharge below 5-10% creates a stressful situation for battery chemistry, accelerating its wear. The power controllers in the Android shell independently calibrate the readings of the charge counter in the background during normal operation. Artificially bringing the device to a state where it stops turning on, can lead to a voltage drop below a critical threshold, after which the battery will be difficult to “swing”.
- 🔋 Myth: You need to discharge your phone to 0% for exercise. Fact: This reduces the number of recharge cycles.
- 🔋 Myth: Charging up to 100% is mandatory on first turn on.Fact: You can interrupt charging at any time without harm.
- 🔋 Myth: You need to keep your phone on charge for 12 hours. Fact: Once you reach 100%, the controller locks the current, you don't need to be on the wire for a long time.
If you notice that the percentage of charge will “jump” (for example, the phone shows 20%, and after a minute turns off), then it makes sense to conduct software calibration through the engineering menu or special applications, but not by physical discharge.
What are recharging cycles?
Optimal temperature during charging
Temperature is the main enemy of any battery. During the fast charging that many Xiaomi models (like the 67W, 120W or even 200W) support, the battery inevitably heats up. It's a normal physical process, but it needs to be monitored.
It is critical not to cover the phone while charging with a cloth, blanket or put it down on soft surfaces that prevent heat transfer.The ideal temperature for charging is room temperature, in the range of 15 to 25 degrees Celsius. If you feel that the device body has become uncomfortably hot, it is better to remove the case or move the gadget to a cooler place.
⚠️ Warning: Never leave a charging phone in direct sunlight or near heaters. Overheating above 45 degrees Celsius can cause irreversible changes in the structure of the electrolyte.
Using heavy gaming or resource-intensive applications while charging creates a double load: the processor is warmed by computing and the battery is warmed by incoming current, in which situations the MIUI system can force charging to slow down or pause to protect components.
MIUI and HyperOS settings to extend the life of the battery
Xiaomi’s shells offer powerful power management tools that you need to use immediately after you buy them, and the right software setup will help keep your battery healthy for years to come.
First, look at the Charging Optimization feature, which analyzes your habits (for example, if you put your phone on overnight charging) and doses the power supply so that the device reaches 100% only by the time you wake up, avoiding a long battery in a state of maximum voltage.
☑️ Setting up energy saving
It’s also worth going into notification settings and limiting background activity for apps you rarely use. Constant GPS, Bluetooth, and searching for 5G networks in the background can not only land the battery quickly, but also keep the device in a state of constant micro-heating.
To access the advanced settings, you can use the code ##6485### in the Phone app, and you can find information about the current state of the battery in the menu (engineering test) that opens, although it is not recommended to change the parameters without understanding.
Table: Comparison of Charging Types and Their Effects
Understanding the difference between conventional and fast charging will help you choose the right use case depending on the situation.
| Type of charging | Speed. | Heating. | Recommendation |
|---|---|---|---|
| Standard (5-10 W) | Slow. | Minimum | Perfect for nighttime exercise |
| Fast (18-33 W) | Medium | Moderate. | Optimal balance for daily use |
| Turbo Power (67-120+W) | Very high. | High-pitched | Only when you need to charge fast. |
| Wireless. | Different. | Medium/High | Convenient but less effective |
As you can see from the table, it makes no sense to use ultrafast charges for regular use, especially at night, and they create extra heat exposure that reduces the life of the cells in the long run.
💡
If you charge your phone at night, use a conventional charger (not a Turbo) to minimize heating and battery time.
Rules of operation: what to do and what to avoid
Compliance with simple rules of operation will allow your Xiaomi or Redmi to maintain excellent autonomy even after two to three years of use.
Try not to charge below 15-20%. Regular discharges are harmful to lithium chemistry. Also, do not keep your phone on charge at 100% unless you need it. The golden mean is to keep the charge in the range from 20% to 80-90%.
- 📱 Use only high-quality cables and power supplies. Cheap analogues from marketplaces may not have the necessary protections and damage the charge controller.
- 📱 Remove thick protective covers during intensive charging if you feel strong heating of the body.
- 📱 Update the software. Update the software. MIUI Security patches often come with improvements to battery algorithms.
⚠️ Warning: Avoid using your phone while charging for heavy graphics games.This causes simultaneous heat from the processor and battery, which is the most stressful scenario for the device.
If you plan to stay off the phone for a long time, leave it about 50-60% charged and turn it off. Periodically (every few months) check the charge level and recharge the device to prevent deep self-discharge.
💡
The most important factor in battery life is the absence of overheating and avoiding extreme charge values (0% and 100%) in everyday use.