Buying a new Xiaomi smartphone always elicits a surge of enthusiasm, a desire to unpack the device faster, learn its functions and start active use. However, immediately after turning on the screen, many users face the dilemma: should you immediately connect the gadget to the network or can safely start operating?
Modern devices, including the flagships of the Xiaomi 14 series, Redmi Note 13 and budget models Poco, are equipped with a completely different type of energy storage – lithium polymer (Li-Po) or lithium-ion (Li-Ion) batteries. These components do not require a long “swing” during the day, as was true for the technology of the last century.
In this article, we will take a look at how to charge your new smartphone for the first time to avoid common errors, take a look at the technical features of BMS power controllers, debunk popular myths about “three full cycles” and give clear instructions on how to optimize battery life in the HyperOS or MIUI operating system.
Myths and reality: do you need a “rock” battery
The most common misconception among users is to completely discharge a new phone before turning it off and then charge it continuously for 12 to 24 hours, a tip that was relevant for nickel-cadmium (Ni-Cd) and nickel-metal hydride (Ni-MH) batteries that were really suffering from the memory effect.
In the case of modern Xiaomi devices, the situation is radically different: Lithium batteries do not have the memory effect as usual. Moreover, deep discharge below the critical threshold (usually about 2.5-3 volts per cell) is a stressor for them. The power controller inside the smartphone is already set up by the plant to turn off the device long before the chemical degradation of the cells.
⚠️ Attention: Long-term stay of the smartphone in a fully discharged state (when it does not even react to the connection of charging) can lead to a voltage drop below the permissible minimum, after which the standard charger can not start the charging process without using special equipment.
There is also a perception that the first charge should be done only with the phone turned off. While this method does avoid background processes and heating, modern charge controllers are smart enough to properly distribute current even when the device is on, the main thing is to use the original adapter and cable that come with the kit.
Li-Ion and Li-Po battery technology in Xiaomi smartphones
To understand how to properly maintain a battery, you need to briefly dwell on how it works. Inside your Redmi or Black Shark case, there is a complex chemical system where lithium ions move between the cathode and the anode. This process is reversible and accompanied by the release or absorption of energy. The key characteristic here is the number of recharge cycles, which usually range from 500 to 800 complete cycles to the loss of 20% of capacity.
It's important to note that a cycle isn't necessarily a single connection to an outlet. If you charge your phone from 40 percent to 80 percent and then discharge it to 40 percent, that's half the cycle. Lithium batteries prefer frequent recharging in small portions over rare cycles of 0% to 100%. Deep discharge causes irreversible changes in the electrolyte structure, and constant charging to the point creates high internal voltage.
Why does the battery warm up on the first charge?
The charge controller built into the smartphone board strictly regulates this process. It divides charging into stages: pre-charging (if the voltage is very low), direct current charging (the main phase of fast dialing capacity) and constant charging (finishing to 100%), which is why the last percentages are collected more slowly - the system saves the life of the cells.
Step-by-step: how to conduct the first cycle of charge
While there are no stringent training requirements, there is a good algorithm to help the system map the charge level correctly and set the right parameters, especially if the smartphone has been in the store for months.
First, connect the device to the original charger. Even if the indicator indicates that the battery is empty, let the phone lie on the charge for about 15-20 minutes when it is off, which is necessary in order to raise the voltage on the cells to a level sufficient for the operating system to safely turn on.
☑️ Checklist of first charge
Once the smartphone is turned on, the system may suggest upgrading or setting up an account, which is energy-intensive. It is recommended that you complete the initial setup while the phone is connected to the network, or wait until it charges at least 20-30% before you start using cameras or games. Full charging to 100% for the first time will help the controller remember the upper limit of capacity.
When the indicator reaches 100%, don't be in a hurry to turn off the cable. Leave the device on the network for another 30 to 60 minutes, which will allow the system to balance the cells (if there are several in the assembly) and complete the saturation phase with low power, then you can safely turn off the power and use the gadget as usual.
Features of fast charging and heating of the device
Xiaomi smartphones are famous for ultra-fast charging technologies, such as the HyperCharge with 67 watts, 90 watts and even 120 watts. When you first charge, you may notice that the device’s body is significantly heated, which is a normal reaction to the passage of large current through the battery resistance.
But it's critical to monitor the temperature, because if you feel that the phone is getting hot enough to be uncomfortable to hold, or if the system is giving you a warning about overheating, you should stop the process. High temperature is the main enemy of lithium batteries, it accelerates the degradation of the electrolyte.
| Battery status | Temperature range | Recommendation |
|---|---|---|
| Normal work. | 20°C – 35°C | Use without restriction |
| Heat-up | 35°C – 42°C | Remove the case, do not load the processor |
| Critical heating | Above 45°C. | Stop charging, let it cool down. |
| Low temperature | Below 10°C. | Charging can go slowly or stop |
During the first charge, it is better not to run heavy applications. Let the system safely complete the background installation and upgrade processes. Remove the protective case if it is dense and does not remove heat well, especially if you use fast charging high power.
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Use only certified E-Marker-labeled cables for charging above 60W. Cheap analogues can not withstand currents of 5-6 Amps and burn or damage the smartphone power controller.
Charge optimization settings in MIUI and HyperOS
Xiaomi’s modern shells provide powerful battery life extension tools that are worth using immediately after purchase, and features that limit maximum charge or optimize overnight charging are hidden in the settings menu.
To access these settings, go to the Settings menu, then select the Battery section, and here you might be interested in the Optimized Charging feature, which studies your habits: if you normally charge your phone at night, the system will charge it to 80%, stop and finish the other 20% just before you wake up, which reduces battery life in a stressful full charge.
Also worth paying attention to energy saving modes. For the new battery, it is not recommended to keep ultra-energy saving on all the time, since it artificially limits the background activity of applications, which can interfere with the normal operation of the system in the first days of use.
⚠️ Warning: Do not use third-party apps from the Play Market to "calibrate" or "accelerate" charging. Android built-in tools and MIUI work more correctly, and third-party software often just wastes battery life, showing beautiful, but useless graphics.
Frequent errors in the operation of a new battery
Even with the theory, users often make mistakes that shorten battery life in the first few months, one of the most common being using a smartphone while charging for games or watching high-resolution video, which causes simultaneous heat from the processor and a chemical reaction inside the battery, which adds up to a critical temperature.
Another mistake is to keep your phone running at zero. Many people are used to keeping your phone on until the last moment when the screen goes out. For lithium batteries, the 20 to 80 percent range is the middle ground. Try to charge your phone when the energy level drops to 15 to 20 percent, and decharge when you reach 80 to 90 percent if you don't need a full charge for a long day ahead.
Don’t ignore the quality of the outlets and the mains voltage. Power surges in the network can damage the power supply, which, in turn, can supply unstable current to the smartphone. Using a high-quality network filter or stabilizer (in regions with poor power grids) is a reasonable investment for the safety of the equipment.
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The most important rule is to avoid extreme states - total zero and being 100% under charge at all times. A middle ground (20-80%) greatly extends the life of Li-Ion cells.
Also worth mentioning is storage. If you buy a phone in stock, don't keep it completely discharged. The optimal charge level for long-term storage (more than 1 month) is 50-60%. Every 3-6 months, such a spare gadget should be taken out and recharged to this level.