First charging of the new Xiaomi: a complete guide to extending the life of the battery

You just unpacked Xiaomi's new smartphone -- brilliant, with the perfect screen and the promise of long battery life. But how do you charge it the first time so that the battery lasts as long as possible? There are so many myths surrounding this topic that it's easy to get confused: some people advise you to "calibrate" the battery three times to 100%, others claim that modern lithium polymer batteries do not need it. Let's figure out what really matters for your Redmi, POCO or Xiaomi 14 flagship in 2026.

Xiaomi smartphones today are equipped with intelligent power management systems, but that doesn’t mean that the user does not have to follow the basic rules. First charging is not a ritual, but a technical process that determines how stable the battery will work in the first months of operation. In this article, we will analyze the official recommendations of Xiaomi, debunk popular myths and give a checklist of actions for various models from the budget Redmi Note to the premium Xiaomi MIX Fold.

Why First Charge Is Important: Myths and Reality

Many users remember the advice from the era of nickel-metal hydride batteries: “charge 12 hours!”, “discharge to zero before the first charge!” These rules are outdated, but still roam the forums. Modern Xiaomi smartphones use lithium-polymer (Li-Po) batteries that have no “memory effect” and do not require “training.”

Xiaomi’s official position (confirmed in the documentation for the Xiaomi 13T, Redmi Note 12 Pro+ and other models from 2023-2026) is that the first charge should be full (up to 100%), but without extreme conditions.

• 🔋 Formation of the protective layer: During the first cycle on the anode of the battery is formed SEI-Solid Electrolyte Interphase, which prevents electrode degradation, is a natural process, but it's stable if you charge it evenly without overheating.
• 📊 Calibration of the controller: Battery management system (BMS) "It remembers battery capacity. Full charging helps you define the real boundaries between 0% and 100%.
• ⚡ Adaptation of fast charging: models with support 120W HyperCharge (e.g. Xiaomi 12 Pro) or 67W Turbo Charging (POCO F5) adjust the algorithms of current supply for a specific battery.

Important: Xiaomi does not require multiple discharge-charge cycles for new devices. Moreover, deep discharges (below 10%) are harmful to Li-Po batteries. If your smartphone comes with a charge of 40-60% (typical for factory packaging), feel free to plug it into the original adapter and charge up to 100% without interruption.

⚠️ Warning: If you bought a smartphone with a charge below 20% (for example, after long storage in stock), first charge it to 100% slow charging (5W–10W), Then use the quick one. It'll reduce the battery load.

What is included in the package: which charger to use

Since 2022, Xiaomi has been following the trend for sustainability and doesn’t always put a charger in the box.For example, Xiaomi 13 Lite or Redmi Note 12 are sold with cable. USB-C — USB-C, But without an adapter, it's confusing whether you can use a charger from an old phone or a laptop?

Here are the official recommendations for the different series:

Key rules for choosing a charger:

• 🔌 Power: Enough for the first charge 18W–33W. Fast charging (67W+) This creates additional heat, which is not desirable for the new battery.
• 🔗 Protocol: Adapter must support USB Power Delivery (PD) Or Quick Charge (QC) fast-charging.
• 🔍 Cable: Use the original cable from the kit. Cheap analogues may not withstand high currents (for example, 5A for 120W).

⚠️ Note: If you connect to the Redmi Note 12 Pro+ (120W) adapter 5W (For example, from an old iPhone, the smartphone will charge extremely slowly, and the system can give a warning about an "incompatible charger.

Next articleHow to Charge the New Xiaomi for the First Time

The algorithm is simple, but requires attention to detail. Follow this checklist to avoid the typical errors:

Let’s take each step in detail:

1. Starter Charge Check: Turn on your smartphone and see the percentage in the status bar. If it's below 20%, charge up to 40-50% with slow charging (5W-10W) first, then move on to a full cycle.
2. Choice of power source: ✅ Socket: Optimal. It gives you a stable voltage. ❌ USB-PC/laptop port: Limits current (usually) 0.5A–1A), which increases charging time and may result in incomplete calibration. ⚠️ Power Bank: This is a good device with support PD (Xiaomi Power Bank 3 Pro).

The charging process

• Do not turn on the game or benchmarks (for example, AnTuTu) during the first charge - this creates an extra load.
• Avoid direct sunlight or heat sources (such as heating batteries).
• If the smartphone is very hot (above 40 ° C), turn it off for 10-15 minutes, then continue.
• Completion: After reaching 100%, hold your smartphone on charging for another 10-15 minutes (but not longer!) to balance the battery cells.

Critical for dual-cell models (e.g. Xiaomi 12S Ultra or POCO F4 GT): After the first charge, complete a full discharge to 0% and recharge to 100% during the first 3 days of operation.

💡

If your Xiaomi supports wireless charging (like the Xiaomi 13 Pro), the first charge is still wired.

Optimal charging settings for battery durability

Modern Xiaomi smartphones have built-in battery protection tools, and after the first charge, it is recommended to configure them to extend the battery life.

1. Enable "Optimized Charging" (available on MIUI 14+):

• Go to Settings → Battery and Performance → Battery Settings
• Activate Optimized Charging (or Adaptive Charging on some models).
• This feature limits charging to 80% at night, and by morning it reaches 100%, reducing wear and tear.

2. Set up temperature control:

• In the same battery settings, turn on overheating protection.
• If the battery temperature exceeds 45°C, the smartphone will automatically reduce the charging power.

3. Limit fast charging (optional):

• For models with 120W HyperCharge (e.g. Redmi Note 12 Pro+), you can manually limit power to 67W or 33W in settings.
• This will increase charging time, but reduce heat generation.

⚠️ Attention: On models with MIUI for POCO (for example, POCO X5 Pro) the path to battery settings may be different: Settings → Battery → Settings → Optimized charging. If you don't have an option, upgrade your firmware to the latest version.

💡

The first 3-5 charge cycles (up to 100% and discharging up to 20%) form the memory of the battery controller, during which time avoid extreme temperatures and use original accessories.

Frequent errors in the first charge and how to avoid them

Even experienced users sometimes make mistakes that shorten battery life, and here are the most common ones and ways to prevent them:

• 🔥 Use of uncertified chargers: Cheap adapters without certification USB-IF They can give unstable voltages, which can cause them to overheat. PD or QC case.
• ❄️ Charging in the cold: If the smartphone brought from the cold (below 0)°C), wait 30 to 60 minutes before charging. Lithium polymer batteries lose capacity when charging in a cold state.
• 🎮 Gaming/benchmarks while charging: Running Genshin Impact or Call of Duty Mobile during the first charge creates peak load on the processor and battery. Temperature can rise to 50°C, which is harmful to the new battery.
• 🔄 Interrupting process: If you turn off your smartphone from charging by 80% and return to the process later, the battery controller may not correctly calibrate the capacity.

Pay special attention to wireless charging. Although models like the Xiaomi 13 Pro support 50W Wireless Charging, the first charge is better done using a wired method. Wireless chargers heat the battery up more because of the energy loss in the coil.

How to care for the battery after the first charge

To make sure your Xiaomi battery lasts 3-4 years without noticeable degradation, follow these rules:

1. Maintain the charge level in the range of 20-80%:

• Constantly charging to 100% and discharging to 0% reduces battery life. Use Optimized Charging in MIUI.
• Exception: once every 2-3 months, perform a full cycle (0-100%) to recalibrate the controller.

Control the temperature:

• The ideal range for Li-Po batteries is 10°C-35°C.
• Avoid direct sunlight (for example, leaving your smartphone on a car torpedo in summer).
• Remove the cover during charging if you notice overheating.

Update the firmware:

• Xiaomi regularly optimizes battery management algorithms, for example, MIUI 14 added an improved Adaptive Charging Mode for night time.
• Check the updates in Settings → About Phone → System Update.

4. Use original accessories:

• Xiaomi’s cables and adapters are certified for fast charging compatibility.
• If the original adapter breaks, choose certified analogues (for example, from Anker or Baseus with PD support).

For models that support Reverse Charging (for example, Xiaomi 12 Pro can charge other devices), avoid frequent use of this feature – it creates additional battery load.

FAQ: Answers to popular questions