Two lightning on Xiaomi charging: decryption of the icon and problem solving

You plugged a Xiaomi smartphone into a charger, but instead of the usual icon of a single-lightning battery, you saw two? This symbol often causes panic among users — especially if you didn't have one before. In fact, double-lightning on a charge can mean both normal operation and hidden malfunction. In this article, we will analyze all the possible causes of two lightning bolts, explain whether it is dangerous for the battery, and give clear instructions on what to do in each case.

The symbol with two lightning appeared in the firmware MIUI It is not on older models like Redmi. 4X or Mi A1. It is most commonly found on fast-charging devices (from Quick Charge 3.0 and higher), but it can also occur on budget devices under certain conditions. Sometimes it is just an indicator of accelerated charging, and sometimes it is a signal about problems in the power chain.

What the two lightning bolts on Xiaomi’s charging screen mean

In most cases, two lightning bolts on the battery icon signal that the smartphone is charging at an accelerated rate, which is normal behavior for technology-enabled devices:

• 🔌 Quick Charge (3.0/4.0/4+) — Qualcomm standard, used in most flagships Xiaomi (for example, Mi Mi) 10, Mi 11, POCO F3).
• ⚡ Turbo Charge – Xiaomi proprietary technology, found in the Redmi Note 10 Pro models, POCO X3 Pro.
• ⚡⚡ HyperCharge – ultra-fast charging (120W and above, there is in Xiaomi 11T Pro, Redmi Note 12 Pro+.

If you see two lightning bolts right after you plug in the charger, it means that the smartphone has recognized the compatible charger and activated the fast charger, and then you don't have to do anything about it, it's normal.

• 📱 Some models (e.g. Redmi 9 or POCO M3) Two lightning can only appear when charged from the original adapter.
• ⚡ If you use a non-original cable or power supply, the icon may flash or disappear – this is a sign of unstable tension.
• 🔋 On separate-battery devices (such as Xiaomi 11 Ultra), two lightning bolts can mean two battery cells charging in parallel.

But it's not always a double lightning, it's good. 10-15 minutes after the start of charging or accompanied by overheating of the body, this may indicate:

• 🔥 Overloading of the power controller (often when using powerful charges from other brands).
• 📉 Battery wear – if the battery capacity falls below 70%, the system may force the “turbo mode” to compensate.
• ⚠️ Firmware failure – sometimes an error occurs after an update MIUI.

How to distinguish normal exercise from a problem

To understand whether the appearance of two lightning strikes is a normal situation or a signal of malfunction, check the following parameters:

If even one parameter in the right column matches your situation, it is a reason for diagnosis.°C the power controller can turn off, and the battery can degrade at an accelerated rate.

⚠️ Warning: If two lightnings only appear when you charge from Power Bank, check the output power of the external battery. Many budget models give out unstable voltage, which leads to a false operation of the "turbo mode." The best option is Power Bank with support PD (Power Delivery or Quick Charge.

Next Next post: What to do if two lightnings are constantly burning

If you are sure that double lightning is not a regular mode, follow this algorithm:

Check the originality of the charger and cable

Measure the temperature of the body (use the application) AIDA64)

Update your firmware to the latest version of MIUI

Reset the battery settings in Settings → Battery → Additionally.

Test charging from another power supply unit-->

Step 1. Checking the charger

Connect your smartphone to the original Xiaomi charger, and if the two zippers are gone, the problem is with the third-party adapter.

• 🔌 Power: for fast charging you need a block from 18W (For example, Mi Charge Turbo 30W).
• 📶 Protocol: Cheap Charges Can Emulate Quick Charge, But Don’t Do It Right.

Step 2. Diagnostics of the battery

Install the AccuBattery app (available on Google Play) and check:

• 📊 Battery capacity (if less than 80% of the factory capacity, it is time to change the battery).
• 🔋 Charging speed (sharp current surges indicate a faulty controller).

Step 3: Resetting the battery settings

Go to Settings. → Battery → Settings (⚙️) → Reset the battery settings. This will delete the data on the charging cycles and can eliminate the software failure. 2-3 Charging cycles will be less efficient – that’s normal.

Step 4. Check the connector. USB-C

Check the charging port for the presence of:

• 🧹 Dust/garbage (you can clean your toothpick carefully).
• 🔌 Contorted contacts (if any, bring them to the service).
• 💧 Traces of oxidation (green plaque - a sign of moisture ingestion).

⚠️ Attention: If after all the manipulations, two lightning bolts continue to burn, and the smartphone does not charge above 80% - this is a sign of a malfunction of the power controller. PMIC (Power Management IC).

Xiaomi models where two lightning is the norm

On some Xiaomi devices, double lightning is embedded in the firmware as a standard fast-charging indicator, and here is a list of models where this icon appears 100% of the time when using the original RAM:

These two lightning bolts are not a cause for concern, but if you notice that:

• 🔥 Smartphone is very warm (above 45)°C),
• ⚡ The charge is jerky (fast, then slow),
• 📉 The battery is discharged faster than usual,

Check the battery health using ##4636## (Battery Information menu).

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If your smartphone is from the list above, but two zippers don’t appear when charging from the original RAM, try turning on the manual fast charging mode: go to Settings → Battery → Settings (⚙️) → Quick charging and activate the option.

Frequent errors of users when two lightning strikes

Many Xiaomi owners are trying to fix double lightning with the wrong methods, which only makes the problem worse.

• 🔌 Using light-bulb tips like "blow into the connector" or "knock on your smartphone." That won't help, and the dust can get deeper.
• 📱 Reset your smartphone to factory settings without first diagnosing it. 90% of the time, the problem isn't the firmware.
• ⚡ Buy cheap charging with AliExpress with the inscription "100W They often don't match the claimed performance and can burn the controller.
• 🔋 Disassemble the smartphone yourself, if you don't have experience. Modern Xiaomi have adhesive batteries - if you do not open the plumes carefully, you can damage the plumes.

The most common mistake is to ignore the problem if the smartphone is "likely charging," in fact, unstable charging with two zippers can lead to:

• 📉 Accelerated battery degradation (loss) 20-30% capacity 6 months).
• 🔥 Overheating and detachment of the battery (risk of bloating).
• ⚡ The power controller will fail (repair will cost you) 30-50% smartphone).

Programmatic methods of solving the problem

If two lightning bolts were not there before, they now appear after the update. MIUI Or install apps, try these methods:

Method 1. Recoil on the update MIUI

Sometimes, charging-indication bugs appear after updates, to bring back the previous firmware version:

1. Download the archive with the desired version MIUI from new.c.mi.com.
2. Rename the file to update.zip and place it in the root of the memory.
3. Go to Settings. → The phone. → Updating the system → Three points (⋮) → Select the update file.

Method 2: Cleaning the system cache

Go to Settings. → Memory. → Clean up and select the system cache. This will delete temporary files that may affect the display of the charging indicator.

Method 3: Disabling Battery Optimization for System Applications

Go to Settings. → Battery → Battery Optimization, Find Apps MIUI System and Security, choose Unlimited.

Method 4: Reset Charging Settings via Engineering Menu

Enter the code ##4636##, select Battery Information, and click Reset Statistics. This can help if the problem is due to incorrect charging cycles.

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If the software methods did not help, and two lightning bolts are accompanied by a slow charging (less than a few). 10W), The problem is almost certainly in the hardware — the battery or the power controller.

When to contact the service center

There are several critical symptoms in which self-acting is useless or dangerous:

• 🔥 Smartphones are heating up above 50°C when charging (can be checked in AIDA64).
• ⚡ Charging is only in the off state.
• 📉 The charge level “jumps” (for example, from 50% drops to 1%).
• 🔌 The lightning badge flashes with frequency 1-2 momentarily.
• 💥 There is a smell of burning or the body is swelled.

In these cases, professional diagnosis is necessary. When contacting the service, check to check:

1. Battery state (measurement of internal resistance).
2. Integrity of the food chain (checking) PMIC, diodes, capacitors).
3. Possibility of work USB-Port (surveying under a microscope).

⚠️ Warning: If you are asked to "swipe the power controller" without first diagnosing - this is a reason to be alert. 80% of the time the problem is solved by replacing the battery or cleaning the connector, and flashing the flashing. PMIC It can cause complete loss of the device.

FAQ: Frequent questions about two lightning bolts on Xiaomi