How to properly charge the battery of the Xiaomi phone for the first time: debunk myths and give accurate recommendations

Why Xiaomi’s First Charging Raises So Many Questions

Buying a new Xiaomi smartphone is always an exciting event. But along with the joy of the new one comes the anxiety: how to properly charge the battery for the first time so that it lasts as long as possible? There are a lot of conflicting advice on the Internet - from "discharge to zero, then charge 100%" to "keep charging for 12 hours in a row." 90% of these recommendations are outdated for 10-15 years and relate to nickel batteries, which are not used in smartphones for a long time.

Modern Xiaomi batteries are equipped with Li-Po or Li-ion batteries that do not require “training” or “calibration” when first used. Moreover, the wrong actions during the first charging stage can reduce battery capacity by 5-10% in the first months of operation. In this article, we will understand what is really important to do when you first connect to the charger, and which myths can be safely ignored.

Spoiler: the procedure is easier than you might think, but there are some critical nuances that are not even mentioned in Xiaomi’s official instructions, such as why you shouldn’t use the native cable from the fast-charging kit, or how to interpret the percentage readings correctly in the first hours of operation.

Myths about the first charge: what actually harms the Xiaomi battery

Let's take a look at some of the most common misconceptions that have been floating from forum to forum for more than a decade: These tips are not only useless, but they can actually do real harm to today's smartphones.

• 🔋 "You need to completely discharge, and then charge to 100%" — this method was relevant for nickel-cadmium batteries of the 90s. For lithium batteries Xiaomi deep discharge (0%) and full charging (100%) — these are extreme conditions that accelerate the degradation of cells.
• ⏳ "The first charge should last 12 hours" - modern power controllers Qualcomm and MediaTek (used in Xiaomi) automatically turn off the current when you reach 100.
• 🔌 "Any charger can be used – the power supply must meet the phone-supported standards (Quick Charge, Turbo Charge, PD). Xiaomi 13 Pro supports the 120W, Redmi Note 12 is a Redmi Note 12. 33W. Excess power is not dangerous (the smartphone will take only the right), but insufficient power will increase charging and heating time.
• 📱 "You need to calibrate the battery in the first days" - calibration (reset Battery Stats) is only necessary when the controller malfunctions, not when you first turn on. In Xiaomi, this is done through the engineering menu (#4636##), but you should not climb there without having to climb there.

The most dangerous myth is the belief that “first charging determines battery fate for years to come.” In fact, battery degradation depends on a combination of factors: temperature, charging cycles, controller quality, and even how often you update firmware (newer versions of MIUI optimize power algorithms), and first charging is just the first step, not a magical ritual.

Step-by-step: how to charge Xiaomi for the first time

Now, let's get to the specifics, the whole procedure will take no more than 2-3 hours and you won't have to overdo it, but you have to keep your phone temperature on track and take your time.

Step 1. Check the complete setup.

Xiaomi should have a power supply and cable (usually USB-C or USB-A → USB-C for budget models). Don’t use cables from older phones – they may not support the right fast charging protocols. For example, a cable from Redmi 5A (2017) will physically fit the Xiaomi 12T, but will limit power to 10W instead of 120W.

Step 2. Connect your phone to charge.

If the phone is dead (0%), It might not turn on right away. 5-10 minutes, the logo should appear MI Do not press the power button repeatedly, which can cause the power controller to fail. AMOLED-screens (e.g. Xiaomi) 13 Ultra) when connecting the charging displays battery animation - this is normal.

Step 3: Charge up to 80-90% without load

The optimal range for lithium batteries is 20-80%. You can go as high as 90% on your first charge, but don't leave your phone on overnight charge. If you need 100% (for example, for tests or settings), turn off charging as soon as you reach your maximum. Don't use your phone while charging - games, videos or app updates will increase battery heat.

Step 4: disconnect from the network and let it cool down

After you turn off the charge, wait 10-15 minutes before you start using the battery, because the chemical processes in the battery last another 20-30 minutes after reaching 100%, during which time the battery temperature can rise to 35-40 ° C, which is undesirable for a new device.

💡

If your Xiaomi supports wireless charging (such as the Xiaomi 13 Pro or Mix 4), the first charge is better done via cable.

What to do after the first charge: the optimal mode for new batteries

The first charge is just the beginning. To make sure that Xiaomi’s battery lasts 3-4 years without a noticeable loss of capacity, it’s important to follow a few rules in the first weeks of operation.

• 🔄 Avoid full cycles – do not unload your phone before 0% and don't keep on 100%. Optimally keep the charge in range 30-80%. V MIUI There is a built-in function "Optimized charging" (Settings) → Battery → Optimized charging), which automatically limits the charge to 80%.
• 🌡️ Watch the temperature if the phone is over 35°C while charging, disconnect it from the mains and let it cool. Overheat by 10.°C above normal accelerates battery degradation by 2 times. In Xiaomi models with Snapdragon 8 Gen 2 (for example, Xiaomi 13) you can turn on the Battery mode in Settings → Special facilities → Optimizing performance to reduce heating.
• 🔌 Use original accessories -- cheap cables and power supplies can not only slow charging, but also damage the power controller. USB-C It does not support the Quick Charge 4 protocol.+, Xiaomi 12 Pro will charge 3 times slower.
• 📵 Don’t charge your phone at night – even with smart charging (which stops at 100%) the phone can overheat due to background processes.If you need 100% by morning, use a timer outlet or smart speaker (such as Xiaomi Smart Plug) to automatically shut down.

In the first 2-3 weeks of operation, try not to expose the phone to extreme loads: long gaming sessions (Genshin Impact, Call of Duty Mobile), shooting 4K video or simultaneous charging and using the navigator, which will help the power controller to get used to your style of use and optimize charging / discharging processes.

Table: Comparison of recommendations for different Xiaomi models

Not all Xiaomi smartphones are the same – the budget Redmi and flagship Xiaomi/Mix have different power controllers and battery types. In the table below, we’ve collected key differences for the popular series.

If your model is not in the table, follow the general rules: the more powerful the charging, the more important it is to control the temperature. Flagship models (Xiaomi 13/14 series, Mix Fold) have better cooling systems, but even they are not protected from overheating if used improperly.

💡

For models with 120W support (such as the Redmi Note 12 Pro+), the first charge should take place on a flat hard surface (table, stand), rather than on soft bedspreads or a sofa, which provides better heat removal.

What not to do at the first charge (and not only)

Some actions can cause irreparable damage to the battery in the first days of use, we have compiled a list of the most dangerous mistakes that users make with the new Xiaomi.

⚠️ Warning: Never use "overclocking" or "mods" to increase charging power (e.g., via the #36446337##) This can cause the battery to bloat or the controller's protection to go off, after which the phone will stop charging altogether.

• 🔥 Charging in a case or in the sun - even the original Xiaomi cases worsen the heat sink. Remove the case when you first charge and make sure that the phone does not get direct sunlight. Battery temperature is above 40°C leads to irreversible loss of capacity.
• ⚡ Turbo modes – some models (e.g. Black Shark 5 Pro) have Storm charging mode" (120W+). It is not recommended to turn it on in the first days - this creates an excessive load on the new battery.
• 🔄 Frequent charging connections/disconnections – if you plug in, you turn off the cable (for example, to respond to a message), this leads to micro-charging cycles that reduce battery life.
• 💧 Charging in a wet environment – even if your Xiaomi has protection IP53 (For example, Redmi Note 11, you can't charge it in the bathroom or in the kitchen next to the sink.

Another common myth is that the first 3 charges must be full. In fact, lithium batteries have no memory, and the number of cycles does not depend on how you charged the phone in the early days.

⚠️ Note: If the phone shows after the first charge 100%, but off 20-30% — It's not a battery defect, it's a calibration failure of the controller. To fix it, completely discharge the phone before you turn it off, then charge it to the power station. 100% Repeat the procedure without interruption. 1-2 once.

How to extend the life of Xiaomi battery after the first charge

To make your Xiaomi battery last longer, follow these guidelines for everyday use:

• 📉 Keep the charge in range. 30-80% — This is the optimal mode for lithium polymer batteries. MIUI 14 There is a function called “Adaptive Charging”, which analyzes your habits and automatically limits the charge to the next level. 80%, If you normally charge your phone at night.
• 🔋 Use original or certified accessories – cheap chargers can not only slow the charge, but also damage the power controller. For example, a power supply without Quick Charge 3.0 support can deliver unstable voltage, which leads to microdamage of the battery.
• 📱 Update the firmware - in new versions MIUI We're optimizing the power management algorithms. MIUI 13 added a "Super Battery Saving" feature that shuts down background processes at low charge.
• 🌙 Avoid long-term full-charge storage – if you haven’t used your phone for several weeks (such as lying in the hospital or going on vacation), discharge it before you can. 40-50% before shutting down. 100% precipitate.
• 🔄 Calibrate the battery every 3 months – to do this, completely discharge the phone before turning off, then charge to 100% without interruption.

If you notice that the battery is running out quickly (e.g., Xiaomi 11T Pro holds a charge for less than two days), check Settings → Battery → Battery Use. It shows the apps that use the most energy. Often the culprits are messengers (Telegram, WhatsApp) or games with background activity.

💡

In the models with AMOLED-screens (e.g. Xiaomi) 12 or POCO F4) Turn on the dark theme and reduce the time you're going to auto-turn off the screen. 15-20%.

Frequent questions about Xiaomi’s first charging