Xiaomi Redmi’s first charger: myths, rules and calibration

Buying a new smartphone is always a pleasant experience, accompanied by a desire to turn the device on as soon as possible and start using it. However, when unpacking the box with the new Xiaomi Redmi, many users are faced with the dilemma: can you immediately connect the gadget to the network or should you first completely discharge the battery?

Modern Chinese smartphones are equipped with efficient power management systems, but the owner’s initial actions directly affect the accuracy of the display of charge in the future.The power controller built into the device must correctly count the battery capacity so that you can rely on the percentages displayed in the status bar. Mistakes in the first hours of operation can lead to the phone turning off at 10-15% charge or show 100% only for a short time.

In this article, we will take a closer look at the physicochemical processes that take place in the battery and explain why old methods of pumping nickel batteries are harmful to your new Redmi. MIUI or hyperos.

Physics: Why Old Methods No Longer Work

For a long time, the belief was that any new battery should be discharged before the device is completely turned off, and then charged continuously for 12 hours, a recommendation that was relevant for devices with nickel-cadmium (Ni-Cd) batteries that had what is called a “memory effect”; if it is not discharged to the end, it “remembered” smaller volume and worked less.

But Xiaomi smartphones use lithium-polymer (Li-Po) and lithium-ion (Li-Ion) batteries, and they have a fundamentally different chemistry: full discharge to zero is a stressor that causes deep cell voltage drops, which can lead to irreversible changes in the electrolyte structure.

⚠️ Warning: Long-term storage of a smartphone with a fully discharged battery (0%) can lead to deep self-discharge, after which the standard charger will not be able to “swing” the controller, and the phone will cease to respond to the connection to the network.

Modern batteries come from the factory with an optimal charge level, usually 40-60%, which is most favorable for the chemical stability of the cell during long-term storage and transportation. So the first charge of the new Xiaomi Redmi does not require a full discharge beforehand, the device is ready to work right out of the box.

Step-by-step: how to charge the new Xiaomi

The process of initial activation and charging of your Redmi or Poco is as simple as possible, but requires a sequence of actions to correctly start all system services. First turn on your smartphone with a side power button. If the screen does not light up, connect the complete charger to the network and only then to the smartphone.

Once the language and Wi-Fi are turned on and set up, the system may suggest upgrading, an important step, because newer firmware versions often include optimizations of power algorithms. During initial application installation and Google account synchronization, the phone can get noticeably hot — that’s normal for the processor to work in high load mode.

If the phone is running out and off during the setup process, just plug it into charging. You don't have to wait for a full shutdown to start charging for the first time. The key is to let the device dial up 100% charge in quiet mode, preferably when it's off or with minimal interface use.

• 🔌 Use the original power supply and cable included, as they are tailored to support Quick Charge or Power Delivery fast charging protocols.
• 🌡️ Watch the temperature of the case: if the phone is too hot, remove the protective case and remove it from direct sunlight or heat sources.
• 📱 Do not load the device with heavy games or video shooting in 4K during the first charge to avoid overheating and trottling.

Battery calibration: Is it needed immediately?

Many users are asking about calibration right after purchase. Calibration is a process whereby the system redefined the limits of minimum and maximum battery charge. New Xiaomi smartphones have a basic calibration set from the factory, which is usually quite accurate.

However, if you notice that the percentage of charge “jumps” (for example, with 20% of the phone suddenly turns off or after charging to 100% quickly drops to 90%), you can do a preventive calibration, which will help the power controller to read the current voltage on the battery bank more accurately.

To do this, bring the phone to a state where it will turn off itself due to lack of power. Then plug the charger in and, without turning the phone on (or turning it on but not using actively), charge it to 100%. Once you reach full charge, leave the device on charge for another 1-2 hours, which will allow the balancing system to complete the process.

Optimizing MIUI to extend battery life

Once you’ve charged the new Redmi, you should look at software settings that will help keep the battery healthy for years to come. MIUI and HyperOS have powerful monitoring tools that users often ignore.

Go to the settings and find the battery-related section, and it's important to activate the charge optimization function if it's available for your model, and it's a function that learns from your habits: if you charge your phone frequently at night, the system will keep the charge at 80 percent and hit it to 100 percent just before you wake up, which reduces chemical degradation.

Also worth checking is the list of applications that are allowed to run in the background. Often new programs installed at start start start start are actively consuming resources. Go to Settings → Battery → Charge Consumption and analyze the list. If you see an application that you rarely use but numb a lot of power, limit its background activity.

Temperature and operating conditions

Temperature is the number one enemy of any lithium battery. It is important to avoid overheating during first charging and subsequent operation. Chemical reactions within the battery at high temperatures proceed faster, leading to accelerated wear and loss of capacity.

The critical temperature for starting degradation is considered to be above +45°C. If you feel that the back of the smartphone heats up a lot during charging, especially when using the Xiaomi Turbo Charge fast charging, take action. Remove the dense silicone case that works as a thermal insulator, and put the phone on a hard surface (table, floor), avoiding soft fabrics that also trap heat.

⚠️ Warning: Never leave a charging phone in direct sunlight or on a pillow, which can lead not only to battery degradation, but also to battery bloating or ignition in extreme cases.

Low temperatures are also dangerous. Charging below 0°C can precipitate lithium metal on the anode, which irreversibly reduces the capacity and increases the risk of short circuit inside the cell. If you bring the phone in from the cold, let it warm to room temperature before connecting to the network.

Charger choice: original vs. analogues

With new Xiaomi smartphones, a powerful charger often comes with it. Users often ask whether it is possible to charge the phone with a charge from another manufacturer or an older, less powerful charger? Technically, you can, the power controller agrees on the current, but there are nuances.

Using non-original power supplies, especially cheap ones without certification, can lead to unstable voltages.This causes heating and inefficient charging. Rapid charging protocols such as QC 3.0/4.0+ or proprietary HyperCharge only work when the charger and smartphone are compatible.

If you use third-party charging, make sure it supports safety standards. Cable also plays a role: thin and long cables have high resistance, which causes some of the energy to be lost as heat and the charging speed to drop. For the first charging and calibration, the best thing to do is use a complete set.

💡

To keep your battery healthy, try to keep your charge in the range of 20% to 80%, avoid regular full discharges of 0% and prolonged recharges of up to 100%, unless urgently needed.

Frequently Asked Questions (FAQ)

💡

Compliance with the temperature regime and the use of quality accessories is more important for the battery than compliance with the rituals of first charging.