Lightning Badge on Xiaomi Redmi Phone: 7 Reasons for Appearance and Ways to Eliminate

You saw a mysterious lightning icon on your Xiaomi Redmi screen and you don't know what it means? This icon can appear in different situations, from standard notifications to signals about serious problems. Depending on the context (near the battery, in the status bar or on the locked screen), the value of the symbol changes dramatically.

In this article, we’ll look at all the options for when a Redmi Note 10/11/12, Redmi 9/10 or other models are lightning, from harmless fast-charging indications to battery overheating warnings, how to distinguish normal system behavior from failures, and what to do in each case – with step-by-step instructions and visual examples.

1. Lightning near battery indicator: charging modes

The most common place a lightning icon appears is next to the battery icon in the upper right corner of the screen, which is an active charging indicator in 90% of cases, but its appearance and behavior depend on the type of charger and the condition of the phone.

On Xiaomi Redmi with fast charging (Quick Charge, Turbo Charge or HyperCharge technology), lightning usually displays with additional battery animations — this is normal behavior. If lightning is constantly burning, even when the phone is not connected to the network, this is already a reason for diagnosis.

• ⚡ Standard charging: lightning without animation, battery fills up evenly. Speed ~5W-10W.
• ⚡⚡ Fast Charging: Lightning with "waves" inside the battery, speeds from 18W (on the Redmi Note 11 Pro+ to 120W).
• ❌ Charging error: Lightning flashes red or crossed out – cable/power supply is faulty.

To check the current charging mode:

1. Connect your phone to the original charger.
2. Go to Settings. → Battery status.
3. Click on the charging chart – the current wattage (W) will be displayed there.

⚠️ Warning: If the phone shows fast charging (30W+) but actually charges 2-3 hours, a non-original cable is likely used. Xiaomi Redmi automatically limits power when low-quality accessories are detected.

2. Lightning in the notification bar: system signals

Sometimes the lightning does not appear near the battery, but in the center of the notification line (where Wi-Fi icons, networks, etc. are usually displayed).

• 🔋 Low battery charge (usually <15%) with a warning to switch to energy saving mode.
• ⚡ Active Charge Saving Mode (only manually or automatically).
• ⚠️ Battery overheating - lightning flashes red, there may be a thermometer icon nearby.
• 🔌 Connection to a non-standard voltage power source (e.g., USB- port of a computer).

To clarify the reason:

1. Swipe your finger down from the top of the screen to open the notification bar.
2. Click on the notification with lightning – the Settings → Battery section will open with an explanation.
3. If there is no notification, check Settings → Notifications → System Notifications.

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If lightning strikes the notification bar for no reason, try restarting the phone, sometimes due to a temporary failure of the battery sensor.

Lightning on a locked screen: specific cases

On the lock screen, lightning can appear in three scenarios, and two of them require intervention:

1. Charging the phone: standard behavior, lightning appears 2-3 seconds after connecting the cable.
2. Activation of the "Quick Unlock" mode (on some MIUI firmware) Lightning signals that the phone is ready to unlock on a fingerprint or face without pressing the power button.
3. Critical battery error: Lightning flashes red, the phone doesn’t turn on or off seconds after it starts.

For the diagnosis of the third case:

Try charging your phone with another cable and power supply |Hold the power button for 20+ seconds for a forced reboot |Check if the battery is swelling (gently press the back cover) |Plug it to the PC – is the device detected in Device Manager

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If the phone does not respond to charging:

• 🔌 Use the original cable and power supply (on Redmi fast charging, minimum 18W).
• 🔋 Try charging from the off state (on some models with a broken screen, this is the only way).
• 🔧 If lightning flashes but the charge is not going, the power controller may be faulty - repair is required.

⚠️ Warning: On the Xiaomi Redmi Note 8 Pro and older models, lightning on the locked screen may not show up when charging is connected if the battery is completely discharged (0%). In this case, leave the phone charging 10-15 minutes before turning on.

4. Lightning in battery settings: hidden MIUI features

In Settings → Lightning battery can appear in several places, and this is always associated with additional power modes:

• 🔋 Ultra-power saving mode: lightning next to the switch, restricts background activity and screen brightness.
• ⚡ Fast Charging (in some firmware): allows you to turn off accelerated charging to save battery life.
• 🔌 “Optimizing Charging”: Lightning next to the schedule – the function limits the charge to 80-90% to extend the battery life.

How to manage these regimes:

1. Open Settings → Battery and Performance → Battery Modes
2. Select the profile you want (e.g., Balanced or Performance).
3. To disable charging optimization, go to Settings → Battery → Settings (⚙) → Charging optimization.

Redmi has a feature called Adaptive Charging on MIUI 13/14, and it uses AI to analyze your schedule and optimize your charging cycles. If that bothers you, turn it off in Settings → Battery → Adaptive Charging.

5. Lightning when connected to a computer: data transmission modes

When you connect Xiaomi Redmi to a PC or laptop, a zipper with a USB icon may appear in the status bar.

• 📱 Charging mode (default): the phone only charges, file access is blocked.
• 📁 File Transfer Mode (MTP): Lightning + folder icon. You can copy data.
• 🖥️ Debugging Mode (ADB): Lightning + Android robot icon (for developers).
• ⚠️ Incompatible cable: lightning flashes, data transmission is impossible.

How to change the connection mode:

1. Connect the phone to the PC.
2. Swipe your finger down from the top of the screen to open the notification bar.
3. Click on the notification "Charging via USB".
4. Select the mode you want: File Transfer, Photo Transfer (PTP) or Charging Only.

⚠️ Warning: On Windows 10/11, the first time you connect in MTP mode, you may need to install the Mi Phone Manager driver. Download it from Xiaomi's official website to avoid device definition issues.

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If your phone charges very slowly (or runs out of power) when connecting to a PC, try using the USB- port on the back of the system unit – they usually deliver more power than the front ports.

6. Lightning as a sign of malfunction: when to contact the service

If the lightning on Xiaomi Redmi appears in atypical situations, it may indicate hardware problems.

• ❌ Lightning is constantly lit red, even when the phone is off and not charging.
• 🔥 The phone is very hot in the battery area, lightning flashes when charging.
• 🔋 The battery is swelling (back cover is raised, screen is "going away").
• ⚡ Lightning appears without a connection to the network, accompanied by spontaneous reboots.
• 🛑 The phone does not turn on, but when charging, the lightning flashes 1-2 times and goes out.

In these cases, it is recommended that:

1. Stop using your phone to avoid fire or damage to the board.
2. If the phone is turned on, back up the data via Settings → Memory → Backup.
3. Contact the Xiaomi service center or a checked repair center. The average cost of diagnosis is 500-1000 rubles.

The Redmi Note 10 Pro and later has a built-in battery diagnostics to run it:

#4636## → Battery → Status check

If the results indicate “bad” or “replacement is required”, do not postpone the visit to the service.

7 Lightning in games and resource-intensive applications: features of MIUI

On Xiaomi Redmi with Snapdragon or Mediatek Helio processors, lightning can briefly appear in the status bar during:

• 🎮 Launching heavy games (Genshin Impact, Call of Duty Mobile)
• 📹 Recording video in 4K or streaming.
• 🔄 Intensive multitasking (many open applications).

This is due to the operation of the Dynamic Resource Allocation function in MIUI. The system temporarily increases the processor clock speed and voltage, which is displayed by lightning as a sign of increased power consumption.

How to manage this behavior:

1. Open Settings → Battery and Performance → Performance Modes.
2. Choose Balanced for normal use or Performance for gaming (lightning will appear more often).
3. To disable the notification completely, go to Settings → Notifications → System Notifications and turn off Performance Status.

⚠️ Warning: On Redmi with a Snapdragon 7xx/8xx processor (e.g., Redmi K40), lightning in games may be accompanied by trottling (decreased performance when overheated). If you notice lags, check the temperature in the CPU Monitor app.

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The constant appearance of lightning in games against the background of rapid battery discharge may indicate wear and tear of the battery. Check its condition in Settings → Battery → Battery condition.

FAQ: Frequent questions about the zipper badge on Xiaomi Redmi