Replacing the charge indicator with Xiaomi: a detailed guide with photos and tips

The charge indicator on Xiaomi smartphones is a small but critical element that signals the state of the battery. If it stops working, flashes incorrectly or does not glow at all, it is not only annoying, but also dangerous: you can miss the moment of complete discharge or overheating of the battery. In most cases, the problem is solved by replacing the LED or plume, and you can do it yourself without going to the service center.

In this article, we will explain why the charging indicator on Redmi breaks, POCO And other Xiaomi models, how to pick up the right part, what tools you'll need to repair, and give you a step-by-step photo instruction, and you'll also learn how to avoid the typical mistakes when disassembling a smartphone and what to do if the indicator still doesn't work after replacing it. If you’ve never repaired a machine before, don’t worry: the process is easier than it seems if you follow a clear algorithm.

Causes of failure of the charge indicator

Before you start repairing, it's important to understand why the indicator stopped working, and 80 percent of the time, the problem isn't with the LED itself, it's with the associated elements.

• 🔋 The plume is the most common, and the plume connecting the indicator to the motherboard may become rubbed, oxidized, or moved away from the connector due to frequent falls or vibrations.
• 💡 LED failure. Rarely, but it happens: the diode burns out from a voltage surge or mechanical impact (for example, if you press the body in the area of the indicator).
• 🔌 Problems with the charging connector. If the contacts are oxidized or bent, the smartphone may not correctly determine the state of charging, which affects the indicator.
• 📱 Firmware failure: Sometimes the indicator doesn't light up due to software errors, especially after the update. MIUI. In this case, it helps to reset the settings or flashing.

To diagnose the problem accurately, try connecting your phone to another charger. If the indicator lights up, it's the power supply or the cable. If it doesn't, it's probably the plume or the diode itself that's to blame. Also, pay attention to the behavior of the phone: if it doesn't turn on or discharges quickly, the problem may be deeper (for example, a malfunction of the power controller on the motherboard).

⚠️ Warning: If the charge indicator flashes red or green in non-standard mode (for example, blinks constantly when fully charged), this may signal a malfunction of the battery.

What Xiaomi models are more likely to break down: statistics and features

Not all Xiaomi smartphones are equally prone to problems with the charge indicator, according to service centers, most often faced with this malfunction owners of the following models:

The models with AMOLED-screens (e.g. Xiaomi 12 or Redmi) K50) The charge indicator is often implemented software - through the illumination of the display part. In this case, no physical replacement is required: the problem is solved by settings in the Settings → Display. → Charging indicator or update MIUI.

If your model is not in the table, do not worry: the principle of replacing the indicator on most Xiaomi smartphones is similar.

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Before disassembling the smartphone, check whether it is not guaranteed. If so, it is better to contact the service center, so as not to lose free repairs.

Selection of spare parts: original vs. analog

Part quality is what the new indicator will last for, and there are three types of components on the market:

1. Original (OEM) — They are manufactured in the same factories as parts for Xiaomi, guarantee 100% compatibility, but are more expensive (from 300 to 800 rubles depending on the model), sold in branded service centers or on AliExpress from trusted sellers.
2. High-quality analogues are copies from third-party manufacturers (e.g. Huaqin or Wingtech). 30–50%, But they can be bright or bright, and they can be good for budget models. 7/8/9).
3. Low-quality fakes — often sold for 50-150 rubles, may not fit the connector, quickly burn out or glow the wrong color, not worth the risk.

When buying, pay attention to:

• 📌 The part articulate. It's different for every Xiaomi model. For example, for the Redmi Note. 8 charge-indicator MB-L01-15.
• 🔍 Photo of the connector. Make sure the number of contacts and their location match your board.
• ⭐ Customer reviews.Look for references to compatibility with your smartphone model.

Where to buy:

• 🛒 AliExpress is a big choice, but a long delivery.Look for sellers rated above 97%.
• 🏬 Parts stores (such as Fix-Price Repair or Chip and Deep) – you can touch the part before buying.
• 🔧 Service centers – sometimes sell used original parts after repairs.

⚠️ Note: If you buy an indicator with a train in the collection (for example, for POCO F3), Make sure that the kit comes with double-sided tape for fixation. Cheap sets often don't include it, and the plume will hang inside the case.

Required tools for replacement

To replace the charge indicator with Xiaomi, you will need a minimum set of tools, most of which can be bought in electronics stores or ordered on AliExpress in a smartphone repair kit (cost – from 200 rubles).

Plastic blades (mediator) for disassembling the body|Screwdriver cross (PH00 or PH0) screw|Tweezers with thin ends for working with plumes|Dryer or thermo-air station for unfeeling the battery|Isopropyl alcohol (90%+) clean-up|Double-sided tape or glue B-7000 plume-fix-->

In addition, the following may be useful:

• 🔦 Lumper or magnifying glass – to see the small contacts on the board.
• 🧲 Magnetic mat - so as not to lose cogs during disassembly.
• 📦 Container for parts - spread the screws into cells, so as not to confuse when Assembly.

If you have a model with a glued body (for example, Xiaomi Mi 11), you will additionally need:

• 🔥 Thermoclee or sealant glue for repeated sealing.
• 🛠️ Screen suction cup – to gently lift the front panel.

Important: if you're first disassembling a smartphone, practice on an unnecessary device or watch a disassembly video for your model. For example, the case of the Redmi Note 10 Pro is understood differently than the case of the Redmi Note 10 Pro. POCO M3 — In the first case, you need to first remove the back cover, and in the second - the screen.

Step-by-step instructions for replacing the charge indicator

The process of replacing the indicator can be divided into 5 stages: disassembling the case, turning off the battery, replacing the plume / diode, assembly and testing. We will consider a universal algorithm that is suitable for most Xiaomi models (except for flagships with a glued body, for example, Xiaomi 13).

Step 1: Turn off and disassemble the smartphone

Before disassembling, be sure to turn off the phone and remove it. SIM-A memory card:

1. Heat the back cover with a hair dryer (a temperature of ~60°C) for 2-3 minutes to soften the glue.
2. Insert a plastic blade into the gap between the body and the cover (start at the corner near the charging connector).
3. Carefully drive the shoulder blade around the perimeter, separating the lid. Don't force it, you can damage the latches!

Step 2: Shutting off the battery

When you take the lid off, you'll see the battery. Do not touch the metal parts with a screwdriver, which can cause a short circuit.

1. Find the battery plume (usually covered with black film).
2. Plug off the film and gently slap the connector with a plastic spatula.
3. Then, remove the sleeve by pulling it upwards (not to the side!).

Step 3: Replace the indicator or plume

Now you have to get to the indicator, and it depends on the model.

• 📱 At Redmi. 9/9A and POCO M2 indicator is located next to the charging connector.
• 📱 In Redmi Note 8 Pro - under the motherboard (you need to remove its mounts).
• 📱 In Mi A3 — integrated into the power button plume.

Further action:

1. If the problem is in the plume: Disconnect the old plume from the motherboard (put the jack in the shoulder blade), install a new plume, make sure the contacts match, secure it with double-sided tape.

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• Heat the diode with a hair dryer (temperature) ~80°C) and remove it with tweezers.
• Clear the contacts on the board with alcohol.
• Install a new diode, solder contacts (if required).

1. Correct connection of the plume to the motherboard.

2. the integrity of the contacts (possibly they were oxidized).

3. firmware settings (in some versions) MIUI indicator is disabled by default).-->

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when replacing the charge indicator, and here are the most common ones and ways to prevent them:

Another common problem is part incompatibility, for example, if you bought a Redmi Note 7 indicator for the Redmi Note 8, it might not fit the connector or glow in a different color. Always check the items!

If the indicator does not work properly after replacement (for example, it glows dimly or flashes), check:

• 🔌 Quality of contacts – they may have oxidized or not fully entered the connector.
• 📱 Settings MIUI — In some firmware there is an option to turn off the indicator (Settings) → Battery → Charging indicator).
• 🔋 Battery condition – if it is severely worn out, the indicator can behave unpredictably.

Programmatic reasons for a non-functioning indicator

It's not always the hardware that's the problem. In 10 to 15 percent of cases, the charge indicator doesn't work because of firmware failures or misconfiguration. Here's what you can do:

1. Check the settings. MIUI: Go to Settings. → Battery and productivity → Charging indicator. Make sure the option is on. If it's not, it may be hidden in Additional Settings.
2. Reset to factory settings: Back up your data. Go to Settings. → The phone. → Settings reset. Select Reset all settings (does not delete files, but resets system settings).

Update the firmware:

• Check for updates in Settings → About Phone → System Update.
• If the update doesn’t help, try to reflash your phone through the Mi Flash Tool (instructions are available on the forum). 4PDA).

If the charge indicator stopped working after the update MIUI, It could be a firmware bug. Check reviews on thematic forums (e.g., on the site). XDA Developers or Mi Community: Users often share temporary solutions, such as rollbacks to a previous version or patch installation.

⚠️ Note: If you decide to reflash your smartphone, make sure you choose a stable version. MIUI Beta firmware may contain errors, including problems with charging indication.

When is the best time to contact the service center

While replacing the charge indicator with Xiaomi is a relatively simple procedure, in some cases it is better to trust the professionals.

• 🔧 You’ve never taken your smartphone apart and are afraid of damaging the fees.
• 🔥 Battery swollen or deformed (it is dangerous!).
• 📱 After the indicator is replaced, the phone does not turn on or charge.
• 🛠️ Requires soldering (for example, if the LED contacts fell off).
• 🔍 Diagnosis showed problems with the power controller on the motherboard.

The cost of replacing the indicator in the service varies from 500 to 1500 rubles (depending on the model and region). If you bought the spare part yourself, some workshops charge only for work (~300-700 rubles. Please specify this in advance.

Advantages of using the service:

• ✅ Work guarantee (usually 1-3 months).
• ✅ Diagnostics of other possible problems (e.g. battery wear and tear).
• ✅ Use of professional equipment (e.g. soldering station).

If you decide to repair your smartphone yourself, but something goes wrong, don't panic. Most of the time, it can be fixed. The key is to keep your phone off if it's not going to work or it's acting weird (like warming up or making extraneous sounds).

FAQ: Frequent questions about replacing the charge indicator