Xiaomi’s new phone’s first charger: how to do it right in 2026

You've just unpacked Xiaomi's new smartphone -- whether it's Xiaomi's flagship 14 Ultra, the budget Redmi Note 13, or the gaming Black Shark 6. The first thing that comes to mind after setting up is to plug the device into charging. But there are a lot of questions: should I completely drain the battery before charging for the first time? Can I use fast charging from day one? How do I avoid battery degradation in the first months of operation?

There are a lot of controversial tips on the Internet, from “charge 12 hours straight” to “never go 100%.” We analyzed Xiaomi’s official guidelines, research on lithium polymer batteries from 2023-2026 and the experience of service centers to give you current and proven instructions. In this article, only facts without myths, taking into account the features of modern smartphones based on Qualcomm Snapdragon and MediaTek Dimensity.

Myths about the first charge: what actually harms the battery

The most common advice, “fully discharge and charge your phone 3 times in a row,” goes back to the 2000s era of nickel-metal hydride batteries. For today’s Li-Po batteries, which have been installed in all Xiaomi smartphones since 2015, this procedure is not only useless, but harmful.

• 🔋 No memory effect: Li-Po batteries don’t require full discharge cycles to “calibrate” the capacity, a myth only relevant to older Ni-MH batteries.
• ⚡ Controller stress: Deep discharge (below 3%) and overcharging (above 95%) put maximum stress on the chemical processes inside the battery, accelerating its degradation.
• ⏳ Previous articleTime loss: Modern Xiaomi smartphones support Quick Charge 4+ or HyperCharge (up to) 120W), So it takes a full charge. 20-40 minutes – there is no point in keeping the device on charge for hours.

Xiaomi’s official documentation (including guides for the Xiaomi 13T and POCO F5) confirms that the first charge can be started at any charge level, and the optimal range for everyday use is 20-80%.

Xiaomi’s official recommendations: what the manufacturer says

In the instructions for the new models (starting with the Xiaomi 12 Series), the company places a section "Battery Care", which clearly spells out the rules of operation, we extracted key points from official sources (including the mi.com website and service manuals):

Xiaomi is focusing on Adaptive Charging, which automatically limits current when it reaches 80% of charge if the phone is connected to the network for a long time (for example, at night), a feature available on all flagships starting with the Mi 11 and enabled by default. You can check your status in the Settings menu. → Battery → Battery settings.

⚠️ WARNING: If you buy a Xiaomi smartphone "hands-on" or in an unofficial store, the first charge should start with checking the originality of the battery.Fake batteries often don't have a temperature controller, which leads to bloating. Check the battery serial number through the Mi Battery Check app (available from the Mi App Store).

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

Follow this algorithm to maximize battery life from day one:

1. Unpack and turn on your phone. Wait until the initial setup (wi-fi connection, Mi Account login) is complete. 5-10 minutes and pull ~5-10% charge.
2. Connect the original cable and adapter.Using uncertified accessories (especially with AliExpress) can cause overheating.The original Xiaomi adapters have an overvoltage protection chip.
3. Charge up to 80%. At this point, you can disconnect your phone from the grid. If you want to charge fully (for example, before a trip), wait for 100%, but do not leave it plugged into the outlet.
4. Activate Adaptive Charging. Go to Settings → Battery → Charging Modes and select the option “Adaptive Charging” or “Optimized Charging” (name depends on the model).

Use the original cable and adapter|Charge to 80% and disconnect|Activate Adaptive Charging in Settings|Avoid video/games while charging|Do not cover the phone (overheating)-->

For models that support wireless charging (such as the Xiaomi 13 Pro or Mix Fold 3), the rules are similar, but there is a caveat: induction charging stations heat the case more strongly, so it is recommended to remove the case while charging and avoid direct sunlight.

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If you buy Xiaomi handheld, check your battery history through the engineering menu before you first charge. Enter the phone app code ##4636##, then select Battery Information. Health should show a value close to 100%.

What to do in the first 3 days: calibration and battery run-in

While modern Li-Po batteries don’t require “run-in” as usual, in the early days of operation, you should stick to a gentle mode, which is due to the fact that the battery controller adapts to your habits (for example, if you usually charge your phone to 60% and turn off).

• 📱 Avoid full cycles. 3 Try to keep the charge in range during the day. 30-80%. This will help the controller calibrate the charge level indicator more accurately.
• 🔌 Alternate power supplies. Use both wired and wireless charging (if supported) to make the system adapt to different currents.
• 🌡️ Control the temperature. Avoid simultaneous charging and resource-intensive tasks (games, video editing) in the early days. The optimal temperature of the body during charging is up to 35.°S.

If you notice that the battery is running out too fast in the early days, that's OK. MIUI indexes files, updates applications and optimizes background processes, which can increase power consumption. After 3-5 days, the flow stabilizes. To speed up the process, you can manually start the optimization:

Settings → About the phone → System optimization → Optimize

⚠️ Note: If in the first days of operation, the Xiaomi phone suddenly turns off when 10-15% Solution: completely discharge the device before it's turned off, then charge to the controller. 100% Repeat the procedure without interruption. 1 If the problem persists, contact the service (possible battery defect).

Fast charging: can you use it from day one?

One of the key advantages of Xiaomi smartphones is support for ultra-fast charging (up to 210W in the Redmi Note 12 Discovery Edition), many users are afraid to turn on the maximum power on the new battery for fear of damaging it.

According to research by TÜV Rheinland (2023), modern lithium polymer batteries with graphene anode (used in Xiaomi 13 series and later) can withstand up to 1,600 cycles of fast charging without significant degradation.

• ⚡ Adaptive algorithms: Mi Turbo Charge technology automatically reduces current when it reaches 80% charge, even if you use charging 120W.
• 🔥 Temperature control: New models have sensors that are over 40 when they're overheated.°C reduce the charging power to 10W.
• ⏱️ Time vs. wear and tear: Fast charging up to 80% in 15 minutes is less harmful than slow charging up to 100% in 2 hours (due to prolonged exposure to high voltage areas).

Conclusion: fast charging can and should be used from the first day, but with reservations:

• Do not keep your phone on charge after reaching 100%.
• Avoid simultaneous charging and gaming (especially in Genshin Impact or Call of Duty Mobile).
• For overnight charging, activate the Optimized Charging mode, which will stop the process by 80%.

Frequent Mistakes: What Kills the Battery of Xiaomi

Even experienced users sometimes make mistakes that shorten battery life by 30-50%, and here are the top 5 most destructive habits (according to Xiaomi service centers in Russia and Europe):

1. If you leave your phone plugged in after reaching 100%, the battery will be under high voltage stress for 6-8 hours, which is equivalent to 2-3 full wear cycles.
2. Use of cheap powerbank: Uncertified external batteries often produce unstable voltages, resulting in micro-damages to the battery, especially dangerous for fast-charging models (e.g., the POCO F5 with 67W).
3. Simultaneous high load on the processor and fast charging increase the temperature of the battery to 45-50 ° C, which 2 times accelerates its degradation.
4. If you leave Xiaomi with 0% charge for 2-3 weeks, the battery can lose up to 20% of capacity due to deep discharge.
5. Ignoring MIUI updates: Newer versions of firmware often improve power management algorithms, such as MIUI 14 adding a "Super Battery Saver" mode that extends runtime at 5% charge.

To check the current state of the battery, use the hidden menu of engineering settings:

Enter the phone app: ##6484##


Select "Battery Info" (Battery Information)




The parameter "MB_06" shows the real capacity in mAh (compare with the passport)

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The main enemy of the battery is not fast charging, but prolonged stay in a state of 100% charge and overheating above 40 ° C. These two factors are responsible for 70% of cases of premature wear.

Next Post:How to extend the life of the battery for years

If you plan to use your Xiaomi for longer than 2-3 years, follow these guidelines (based on data from the Battery University Lab):

• 🔄 Avoid full cycles. Better to charge your phone 2 times 40% than 1 time from 0% to 100.
• ☀️ Don't leave your phone in the sun. The temperature inside your car can reach summer temperatures. 60-70°C, which destroys the battery separator.
• 📵 Turn it off. 5G/LTE, If you don't use it, Snapdragon modem. X65 (installed in Xiaomi 12S Ultra consumes up to 30% Additional energy in standby mode with active 5G.
• 🌙 Use a dark theme. AMOLED-On the screens (all flagships Xiaomi since 2019) black pixels are not illuminated, which saves up to 15% of charge.
• ⚡ Charge short sessions, like plugging your phone into a phone. 10-15 several times a day instead of one long cycle.

For models that support reverse wireless charging (e.g., the Xiaomi 13 Pro can charge other devices), it is important to remember that this mode puts additional stress on the battery. Use it only in emergency cases and make sure that the body temperature does not exceed 38 ° C.

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If you travel frequently, buy a portable charger Xiaomi Mi Power Bank 3 (20,000 mAh) with support for Quick Charge 3.0. It has a built-in temperature controller and will not damage the battery of the smartphone, unlike cheap counterparts.

FAQ: Answers to popular questions