Buying a new gadget is always accompanied by a desire to immediately start its active use, but owners of Xiaomi devices often wonder about the correct primary charging. Modern lithium-polymer batteries installed in smartphones Redmi and Poco, significantly different from the old nickel counterparts, which required a long “rock-up”. Many users still believe in outdated myths about the need for a 12-hour charge, which is at best useless, and at worst – creates an extra load on the power controller.
Battery technology has advanced so far that the chemical composition of cells does not require long-term current to activate. Factory calibration is carried out during the assembly stage of the device, so your actions in the first days of operation should be aimed at preserving the health of the battery in the long term. In this article, we will discuss the real working mechanisms of the BMS (Battery Management System) and give clear recommendations that will help to extend the life of your new device.
Ignoring basic rules of operation can lead to rapid degradation of capacity and software errors in the display of percentage of charge. Understanding the physical processes that occur inside Li-Pon elements will allow you to avoid common errors. Next, we will look at the step-by-step algorithm of actions that will ensure the optimal operation of your device from the first minutes.
The chemistry of the process: why old methods don't work
The era of the memory effect that characterized nickel-cadmium batteries is irrevocably gone. Xiaomi’s current smartphones are equipped with lithium-based batteries that have no effect and do not require full discharge before charging. In contrast, a deep discharge below the critical level can even be harmful to the chemical structure of such cells. The power controller, built into the board, independently regulates currents and voltages, turning off the power supply when it reaches 100%.
The myth of charging a phone for 8 to 12 hours on the first turn on is a long-standing one, and has no technical basis for modern devices: a charge controller is a smart chip that knows exactly the capacity of a cell and stops charging when it is full. It is pointless to hold the phone on a wire for days after reaching full charge, since the current will simply stop flowing into the battery.
Moreover, prolonged exposure to a device under voltage with 100% charge and cable connected can cause recharge cycles that slightly heat the battery. Although the protection systems in MIUI and HyperOS minimize this risk, it makes no sense to create artificial loads on the new device.
What is BMS and why is it needed?
Step-by-step: the first steps with a new smartphone
When you unpack the box and remove your new Xiaomi, the first thing to do is to evaluate the current charge level. Usually, the devices go on sale with a charge of about 50-60%, which is optimal for long-term storage in stock. If the indicator is on or the screen is responsive to pressing, you can start turning on. Turn on the device and go through the initial system setup.
If the smartphone does not respond to the power button, it means that the battery has died below the start threshold during the logistics process. In this case, connect the original power supply and cable. Do not panic if the charging indicator does not light up instantly - with a deep discharge, it takes several minutes for the system to "come alive" and start displaying information on the screen.
☑️ Primary battery activation
Once you've turned on and connected to Wi-Fi, it's recommended to check for firmware updates right away. Often, manufacturers will issue patches that show how the power controller and charging algorithms work for a particular model. Go to Settings → About phone and click on MIUI or HyperOS. If you have any updates, install them while the phone is connected to the network.
⚠️ Warning: Do not try to turn on the phone if it was brought from the cold. A sharp temperature drop can cause condensation inside the case, which will lead to a short circuit.
Charging and optimization in MIUI and HyperOS
MIUI shells and the new HyperOS offer advanced power management tools that often go unnoticed by users. In the battery settings, you can find the Optimized Charging feature. This algorithm studies your habits: if you normally put your phone on overnight charge, the system will charge it up to 80%, and the remaining 20% will pick up right before you wake up, which significantly reduces the time the battery is in a state of maximum voltage.
Also worth paying attention to temperature control: When using powerful power supplies that support Quick Charge or Xiaomi Turbo Charge, the device can heat up. The system automatically reduces the charging current when overheating, but it is better to help it with this. Remove the thick case if it is dense, and do not cover the phone while charging.
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Use No Sound or Do Not Disturb during night charging so that background notifications don’t wake the screen and prevent the system from going into deep sleep, which will reduce heating.
Owners of gaming smartphones Black Shark series or flagship Xiaomi with game mode should be aware of the function bypass charging (direct power).When connecting the cable during the game, the current goes directly to the motherboard, bypassing the battery. This is the ideal scenario for saving battery life during long sessions.
Table: Comparison of Charging Types and Their Effects
Different charger scenarios affect the degradation rate of chemical elements differently, and understanding these differences will help you choose the right strategy for different situations.
| Use case scenario | Resource impact | Recommendation |
|---|---|---|
| Charging up to 100% and leaving overnight | Average (without optimization) | Enable “Optimized Charging” in the settings |
| Frequent recharging (20% → 80%) | Minimum (perfect) | Use during the day whenever possible |
| Deep discharge to 0% | High (harmful) | Avoid, put on charging at 10-15% |
| Use during fast charging | Medium (heating) | Remove the cover, avoid heavy games |
As you can see from the table, the most gentle mode is to keep the charge in the range from 20% to 80%. Lithium-ion chemicals feel most stable in this corridor. The extremes (0% and 100%) create the greatest voltage on the electrodes.
Choice of accessories: cables and power supplies
Charging quality is directly dependent on the hardware used.Combined with new Xiaomi smartphones, there are often original units with support for Power Delivery protocols or proprietary HyperCharge.Using third-party cheap adapters can cause the phone to charge slowly (5V/1A) or, worse, power surges will damage the controller.
Pay attention to the labeling of the cable. For fast charging currents above 2A, cables with reinforced contacts and appropriate labeling (often 5A or 6A) are required. A conventional thin cable can become a “bottleneck”, limiting current and causing strong heating of the wire itself.
⚠️ Warning: Avoid using damaged cables with rubbed insulation or broken connectors. Unstable contact causes sparking and surges of current, which is critical for sensitive smartphone electronics.
If you buy a car charger, make sure it has overload protection.The car's on-board network, especially at the time of engine start-up, can produce voltage surges that are dangerous to any electronic device.
Common myths about Xiaomi batteries
There are many legends around batteries that are passed by word of mouth. One of the most popular ones is that the phone must be discharged at zero times a month to "calibrate." In fact, modern BMS calibrates automatically during operation. Artificial deep discharge only stresses the battery. The only time calibration can be required is if the percentage of charge "jumps" (for example, with 20% of the phone suddenly turning off), but this is more a sign of malfunction or wear than the norm for a new device.
Another myth claims third-party "battery saving" apps are useful.-killers They're actually damaging, and they're basically closing the background processes that Android then has to run over again, using more power and putting a lot of work on the processor. MIUI They do it much more effectively.
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The best way to extend the life of a battery is to prevent it from overheating and avoid extreme charge values (0% and 100%) in everyday use.