Xiaomi’s new phone: What to do with the battery immediately after purchase

You’ve just unpacked Xiaomi’s new smartphone — whether it’s Xiaomi’s flagship 14 Ultra, the budget Redmi Note 13, or the POCO F6 Pro — and you’re faced with the eternal question of how to charge your battery for the first time? There’s a lot of conflicting information on the Internet: some advise you to “calibrate” your battery with three-fold charge-discharge, others claim that modern lithium-polymer batteries don’t require any training. Who can you believe?

We analyzed official Xiaomi recommendations, research from battery manufacturers (including ATL and Sunwoda, which supply batteries for the brand’s smartphones), as well as data from independent tests from DXOMARK and GSMArena. In this article, only proven facts without myths, taking into account the features of fast charging (up to 210W in top models) and Surge P1/P2 technologies used in Xiaomi chips.

Spoiler: The first charging of the new Xiaomi does not require any “rituals” – modern power controllers (for example, Qualcomm Quick Charge 5 or Xiaomi HyperCharge) automatically optimize the process, but there are 3 critical rules that will extend the life of the battery by 20-30%.

Why “pumping” the battery in 3 cycles is a dangerous myth

If you grew up on phones with nickel-metal hydride (NiMH) batteries in the early 2000s, then you probably remember the advice to “fully discharge and charge 3 times in a row.” For today’s Li-Po batteries, which are equipped with all Xiaomi smartphones (including the Redmi K70 Pro and Mi 13T), this method is not just useless – it is harmful.

Here's what happens at the chemistry level:

• 🔋 Anode degradation: deep discharge (below) 5%) leads to irreversible destruction of the graphite layer of the anode, which reduces the battery capacity after 10-15 cycle.
• 🔥 Risk of overheating: Full charging before 100% high currents (e.g., high currents, 120W Xiaomi 13 Pro) heats the battery to 45-50°C, accelerating electrolyte oxidation.
• ⚡ False calibration: Xiaomi Power Controller (e.g., Xiaomi Power Controller, BQ25890 into POCO X6) automatically calibrates the battery in the first 5 cycles – forced “pumping” knocks down the algorithm.

Xiaomi's official response to Mi Community (2023)

Xiaomi smartphones with MIUI factory firmware do not require manual battery calibration. Adaptive Charging (in models with MIUI 14+) independently optimizes charging and discharging cycles in the first 7 days of use.

What to do with the battery of the new Xiaomi

Instead of the outdated “rituals,” focus on these 4 steps that really affect battery life:

1. Charge the phone to 80-90% immediately after unpacking (without waiting for full discharge!). Use the original charger from the kit - it is designed to be safe for the new battery. For example, for the Redmi Note 12 Pro+ 5G, it is a 120W adapter with Quick Charge 4+ support.
2. Activate Optimized Charging mode (if available). In MIUI 14/15, path: Settings → Battery → Battery settings → Optimized Charging. This mode limits the charge to 80% at night and brings it up to 100% to your wake-up.
3. Avoid extreme temperatures in the first 24 hours.Do not charge your phone in the sun or near a heater (optimum range: 10-35°C).
4. Update your firmware to the latest version of MIUI, and newer versions improve power management algorithms, such as MIUI 15, which adds support for dual batteries (like Xiaomi 14) with separate charge control for each cell.

⚠️ Note: If your Xiaomi supports wireless charging (e.g. Xiaomi 13 Ultra with a wireless charging system) 50W), For the first time, use only wired RAM. Wireless charging heats the battery more, which is critical for a new cell.

What Charger Should I Use for the First Charge?

Xiaomi is making smartphones with chargers optimized for a particular model, such as:

⚠️ Note: If you lose the original RAM, choose a replacement that supports protocols compatible with your model. 12T Pro (c) 120W HyperCharge is a Quick Charge 5-certified adapter. USB PD 3.0 Use of cheap 'no-name' charging could lead to:

• 🔌 Unstable current, which is why the battery controller incorrectly calibrates the capacity.
• 🔥 Overheating (especially in models with Surge chips, for example, Xiaomi) 13T Pro).
• ⚡ Reduced service life by 15-20% owing to "teared" charging cycles.

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Check the originality of Xiaomi charger by serial number on the site mi.com/global/verify. Fake RAMs often pose as branded, but do not support fast charging technologies.

How to set up Xiaomi for maximum battery life

After the first charge, adjust your smartphone to minimize battery wear. Here are the key parameters (relevant to MIUI 12-15):

Charge limitation:

• 📱 Enable Optimized Charging (Settings) → Battery → Battery settings).
• 🔋 If you don’t have an option, use third-party apps like AccuBattery (available on Google Play).

Control of background activity:

• 🚫 Turn off auto-run of unnecessary apps: Settings → Annexes → Autostart control.
• 🔄 Limit background synchronization for social networks and instant messengers.

3. Dark mode and frequency of screen refresh:

• 🌑 Enable Dark Mode (Settings) → Screen. → Dark subject matter) — AMOLED-screens (like in Xiaomi) 13 Lite) is consumed on 20-30% less.
• 🔄 Set the screen refresh rate at 60Hz (if you are not playing): Settings → Screen. → Frequency of update.

Optimization of communication:

• 📶 Turn it off. 5G, If not used: Settings → SIM-maps and mobile networks → Preferred type of network.
• 🔍 Enable Adaptive Wi-Fi (Settings) → Wi-Fi → Additionally, the smartphone will automatically switch to the mobile network at a weak signal, saving charge.

What to do if the battery of the new Xiaomi quickly discharges

If you notice an abnormal flow rate after the first charge (for example, the Redmi Note 12 discharges by 20% in an hour in standby mode), follow these steps:

1. Check background activity: Go to Settings → Battery → Battery usage.Click on Detail (graph icon) and see which apps consume the most. 🛑 Close apps with abnormal consumption (e.g. Facebook or TikTok can eat up to 30% charge in the background).
2. Calibrate the battery programmatically: Discharge the phone to 0% (until it turns off). Connect the original RAM and charge to 100% without interruption. Repeat the process 1 time (not three!). ⚠️ Note: This method is only needed when there is a clear fault (e.g. if the phone is turned off at 20% charge.
3. Reset the system cache: Settings → About Phone → Memory → Clear the cache This will remove temporary files that can load the processor and battery.
4. Check the battery health: Enter the phone code ##4636##. Select Battery Information and see Health Level. 🔋 Norm for a new phone: 100%. If it's under 95%, contact the service.

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If after all the manipulations, the battery discharges faster than stated in the specifications (for example, Xiaomi 13 Pro should hold 1.5 days, and holds 10 hours), the cause may be a defect in the battery.

Myths about Xiaomi’s first charger: what doesn’t work in 2026

There are still tips online that are relevant to phones 10 years ago, and we'll look at the most popular ones.

💡 Interesting fact: Xiaomi 14 Ultra uses a graphene battery with anode of silicon, which degrades 30% slower than conventional Li-Po. For such models, even a deep discharge to 0% is less critical, but still not recommended.

FAQ: Frequent questions about Xiaomi's first charge