You just unpacked Xiaomi’s new smartphone — whether it’s Xiaomi’s flagship 14 Ultra, the budget Redmi Note 13, or the gaming POCO F6 Pro. The first thing to do after turning on is to charge the battery correctly. But why is it so important? The fact is that the lithium-polymer batteries used in modern smartphones have a limited charging cycle life, and improper actions at the initial stage can reduce their life by 20-30%.
There are many myths on the Internet about pumping a battery, needing to fully discharge or charge within 12 hours, most of which are outdated since the era of nickel-metal hydride batteries. Today Xiaomi uses intelligent power management systems (MIUI Battery Optimization) that automatically calibrate the battery. However, this does not mean that the first charge can be carried out as you like. Next, we will examine what is really important and what is a waste of time.
Myths about the first charge: what is true of this?
The most common advice is that charging should last 8-12 hours. This is completely irrelevant for Xiaomi 2020 smartphones and newer. Modern power controllers (Qualcomm Quick Charge, MediaTek Pump Express) automatically turn off the current when they reach 100%, and then maintain the charge level with micropulses. Prolonged charging is not only useless, but can lead to overheating.
Another myth is that you need to completely discharge before you first charge. It's bad for lithium polymer batteries! Deep discharge (below 3%) puts stress on the battery and reduces its lifespan. Xiaomi even builds protection: when the charge drops to 1%, the smartphone is forcedly shut down to prevent damage.
- ❌ Myth 1: “You need to charge 12 hours” – only relevant for old button phones with Ni-MH batteries.
- ❌ Myth 2: "First-time 3 The cycle should be complete (0-100%)" — This reduces the battery life of the 10-15%.
- ✅ Fact: Optimal charge range for lithium polymer batteries — 20-80%.
- ✅ Fact: Xiaomi uses adaptive battery calibration that works independently of the user.
Next articleHow to Charge Xiaomi for the First Time
The first charge algorithm is simple, but requires attention to detail. It is important to use the original cable and power adapter from the kit - they are designed for the current and voltage optimal for your model. If you lose your native power supply, choose certified accessories that support Quick Charge 3.0/4+ or PD (Power Delivery).
Here's what we need to do:
☑️ The first charging Xiaomi
- Step 1: Unpack your smartphone and check your charge level. Usually new Xiaomis come with 40-60% battery, which is enough for initial setup.
- Step 2. Connect the original cable to the adapter and then to the smartphone. USB-Hubs or extensions - they can cause interference.
- Step 3: Charge the phone to 100 percent, and you can use the device at that point, because today's power controllers are able to multitask.
- Step 4: Once you reach 100%, turn off the charge and let the battery rest for 10-15 minutes. Then discharge to 20-30% and recharge to full.
⚠️ Note: If your Xiaomi supports wireless charging (e.g. Xiaomi 13 Pro or Mix Fold 3), the first charge is still recommended to be done via cable.
What to do if the smartphone is discharged “to zero” before the first charge?
Situation: You turned on the new Redmi A2, set it up, and an hour later it suddenly went off.
- 🔋 Incorrect calibration of the battery in the factory (rarely, but it happens).
- 📱 Firmware errors (relevant for the first batches of new models).
- 🔌 Battery defect (if the phone doesn't turn on even after charging).
In this case:
- Connect your smartphone to charging and wait 15-20 minutes – sometimes the charge indicator does not appear immediately.
- If the screen is black, try pressing the power button for 10-15 seconds.
- If the phone doesn’t respond, connect it to your PC via USB – sometimes this helps wake up the power controller.
⚠️ Warning: If after these manipulations the smartphone does not turn on, do not try to disassemble it yourself! Contact the Xiaomi service center - new devices are covered by warranty, and repair will be free of charge.
Why Xiaomi can get “zero” after buying?
Optimal settings to extend the life of the battery
After the first charge, it is recommended to configure several parameters in MIUI to maximize the battery capacity:
| Parameter | Recommended value | Why is it important? |
|---|---|---|
| Settings → Battery → Battery mode | “Balanced” or “Long service life” | Limits the maximum charge to 80-90%, reducing wear and tear. |
| Settings → Display → Update frequency | 60 Hz (instead of 90/120/144 Hz) | High frequency increases battery consumption by 15-20%. |
| Settings → Communication → Network mode | 4G (instead of 5G if not needed) | 5G-The modem consumes 25% more energy. |
| Settings → Applications → Auto Launch | Disable for unnecessary applications | Background processes drain the battery even in standby mode. |
It is also useful to activate Adaptive Charging (Settings → Battery → Additional) which analyzes your habits (e.g. sleep time) and delays the completion of charging to 100% until you wake up, reducing the battery’s stressful time.
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If you often forget to turn off charging, use smart timer outlets (such as the Xiaomi Mi Smart Plug). Set up an automatic shutdown 1.5-2 hours after reaching 100%.
Frequent Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes that shorten battery life.
- 🔥 Overheating while charging. Don't put your smartphone on soft surfaces (cushion, blanket) - this blocks ventilation: 10-35°C.
- ⚡ Using uncertified charging; cheap cables may not meet standards USB-IF, which causes a surge in tension.
- 📵 Ignoring system warnings. MIUI reports overheating or slow charging, don’t brush it off – it’s a signal of a problem.
- 🔄 Frequent full discharges. Regular drop to 0% "kills the battery for 100-150 cycle 500-800.
The combination of high load and charging is particularly dangerous, for example, if you play Genshin Impact or mount video in CapCut while connecting to the network, the battery can heat up to 45-50°C, which is critical for its health, in which case it is better to charge the phone first, and then use resource-intensive applications.
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The most dangerous factor for the battery is the combination of high temperature and full charge (100%). Try not to leave the smartphone on charging at night, especially in a hot room.
How to check the battery after the first charge?
To make sure your Xiaomi battery is working properly, use built-in tools or third-party apps:
- Integrated MIUI Diagnostics: Go to Settings → Battery → Battery status. Check flow chart and temperature. Normal: 25-35°C when charging, 30-40°C under load.
AccuBattery
(Play Market):
- Secret code: ##4636##In the Battery Information menu, see Health. Optimal value: good.
If the battery capacity after the first charge is less than the declared by more than 5%, this may indicate a defect. For example, for Xiaomi Redmi Note 13 Pro+ with a battery of 5000 mAh, the normal value after calibration is 4900-5050 mAh. If the device shows 4500 mAh, contact the service.