The letter “X” or the error “L” on the scales Xiaomi: reasons and ways of solving

You're standing on a smart scale Xiaomi Mi Smart Scale 2 or another model of the brand, and instead of the usual numbers suddenly appears on the screen mysterious letter "X" or error "L." What does it mean? a breakdown, software failure or simply improper operation? In this article, we will analyze all the possible causes of such symbols, explain their meaning and provide step-by-step instructions for fixing the problem - from a basic reboot to deep diagnosis.

Mistakes on Xiaomi scales don’t always indicate a serious malfunction, most often due to incorrect calibration, discharged batteries or external interference, but you shouldn’t ignore them: if the “X” or “L” appear regularly, this can signal a device is about to fail. We have collected all the relevant information for 2026, including data from Xiaomi official manuals and user feedback, to help you understand the situation without going to the service center.

Before you start repairing, make sure that the problem is not in the details. For example, many users confuse the "L" error with the breakdown of the sensors, although it is enough to simply replace the batteries. And the letter "X" can mean both an overload of scales and a failure of communication with the Mi Fit application. Next, a detailed analysis of each case.

What the letter “X” means on Xiaomi scales

The letter “X” on Xiaomi’s smart scale screen is one of the most common error signals, and it can mean, depending on the model and context, that:

• 🔄 Weight overload – exceeding the maximum weight (usually 150-180 kg depending on the model.
• 📱 No connection to the app – the scales are not synced with Mi Fit or Zepp Life via Bluetooth.
• ⚖️ Incorrect calibration – Factory sensor settings are lost (often after a fall or impact).
• 🔋 Critical battery discharge – in some models, the “X” appears at a voltage below 2.4V (Although this is usually the case, the "L»).

To determine the exact cause, try the following:

1. Take the weight off the scales and check if the X disappears. If so, the problem is overload.
2. Open the Mi Fit app and try syncing the data. If the scales don't show up in the list of devices, there's a communication problem.
3. Look at the battery indicator in the app. If the charge level is critically low, replace the batteries.

Important: In Xiaomi Mi Body Composition Scale 2 models, the letter "X" can appear when trying to weigh with bare feet on the cold floor.

The “L” Error on the Libra: What It Is and How to Fix It

The “L” error on Xiaomi’s scale screen is almost always associated with low battery power. Unlike the “X”, which can have multiple causes, the “L” is an unambiguous signal that you need to replace the batteries.

• 🔋 In models with 4 batteries AAA «L occurs when the voltage of at least one element falls below 1.2V.
• 🔌 In a battery scale (for example, Xiaomi Mi Smart Scale 2 with a battery) USB-“L” may mean that the device has discharged up to 10% and requires a connection to the network.
• ⚡ If the L does not disappear after replacing the batteries, check the contacts - they may have oxidized or become contaminated.

Instructions for replacing batteries:

Turn the scales over and find a battery compartment (usually under rubber legs)

Carefully tuck the compartment cover (use a plastic card to avoid scratching the body)

Remove old batteries and check their voltage with a multimeter (should be at least one). 1.5V)

Install new batteries while observing polarity (+/-)

Close the lid and turn on the scales (click on the platform or on the on button if there is one)

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If the “L” error remains after replacing the batteries, try resetting the weights:

1. Remove the batteries for 10-15 minutes.
2. Press and hold the power button (if any) for 10 seconds.
3. Set the batteries back and turn the scales on.

⚠️ Note: In the Xiaomi Mi Body Composition Scale with bioimpedance analysis (measurement of fat, muscle, water) after reset, you may need to re-attach to the application!

Xiaomi scale calibration: how to remove the error "X" after a failure

If the letter "X" appears even at a low weight (for example, 50-70 kg), most likely, the calibration of the sensors is lost.

• 🚚 Transportation or weight drop.
• 🔄 Abrupt temperature changes (for example, if the scales were stored on the balcony in winter).
• 🔧 Battery replacements or resetting settings.

For calibration, follow the following steps:

1. Place the scales on a flat, solid surface (not on the carpet!).
2. Turn on the scales and wait for zeros (0.0).
3. Carefully press the scale platform with one finger in the center, and the weight (0.5-1.0 kg) should appear. If instead of the numbers again "X", the calibration is knocked down.
4. For manual calibration: Remove the batteries. Press and hold the power button (if any) for 15 seconds. Set the batteries back. Place an object with a known weight on the scale (e.g., a 5kg weight or a 1.5l water bottle) ≈ Wait 10-15 seconds, the scales must be automatically calibrated.

If the automatic calibration didn’t work, try updating the firmware through the Mi Fit app:

1. Open Mi Fit and go to the scale profile.
2. Click on the three dots in the upper right corner → Device settings.
3. Select the firmware update (if available).

⚠️ Warning: Don't interrupt the firmware update process! If the scales turn off during installation, they may stop turning on. Details are in the spoiler below.

Communication problems: why Xiaomi scales show “X” and don’t sync

If the letter "X" appears at the same time as the data cannot be synchronized in Mi Fit, the problem lies in the Bluetooth connection.

If the scales are still not synchronized:

1. Make sure that the phone has geolocation access enabled for Mi Fit (required for some features).
2. Try connecting the scales to another smartphone – this will help to identify what the problem is (in the scales or in your phone).
3. Reset network settings on your phone: Settings → System → Reset → Reset settings Wi-Fi, mobile network and Bluetooth.

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If Xiaomi scales are not synced with iPhone, try disabling the Bluetooth Limit feature in iOS settings: Settings → Bluetooth → Information (i) near the weights → Disable the “Bluetooth Limit».

Mechanical damage: When an "X" or "L" speaks of a breakdown

If all software methods have been tried, but the "X" or "L" errors remain, it may be a mechanical breakdown.

• 🔧 Weight sensors (tensometers) – break down when falling or overloading.
• 🔌 Battery compartment contacts – oxidized or bent.
• 📱 Bluetooth module - fails when voltage jumps.
• 🖥️ Control board - can burn if charging incorrectly (in models with USB).

Signs of mechanical failure:

• ❌ Libra shows an "X" even without loading.
• ❌ The “L” error appears immediately after the battery is replaced.
• ❌ The scales make extraneous sounds (squeaking, crackling) when pressed.
• ❌ There are cracks or dents on the body.

What you can do on your own:

1. Take the scales apart (with a plastic card carefully) and check: Integrity of wires connecting sensors to the board; no oxidation on the contacts of the battery compartment (clean with alcohol); Correct installation of sensors (they must fit tightly to the platform).

If you see damaged elements (for example, bloated capacitors on the board), contact the service.

⚠️ Note: In models with bioimpedance analysis (for example, Xiaomi Mi Body Composition Scale 2), self-repair can lead to incorrect readings of body composition!

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If Xiaomi scales fell from a height of more than 50 cm, there is a high probability of damage to the strain gauges, in this case, repair at home is almost impossible - it requires replacing the sensors on specialized equipment.

Xiaomi models comparison: which scales are more likely to show “X” or “L”

Not all Xiaomi smart scales are equally resistant to failures. Analysis of user feedback and service center data shows that the most common errors are “X” and “L” in the following models:

If you are just planning to buy Xiaomi smart scales, look for models with a metal platform (for example, Xiaomi Smart Scale 2) – they are less prone to mechanical damage.

It’s also worth checking if the model supports automatic firmware updates. For example, in Mi Body Composition Scale 2, firmware can only be updated manually via PC, making it difficult to fix software failures.

When to contact the service: signs of a serious breakdown

Not all Xiaomi weight problems can be solved by yourself.

• 🔥 Libras show “X” or “L” even after battery replacement and resetting.
• 💥 Extraneous symbols appear on the screen (for example, characters or random numbers).
• 🔌 Libras are not included at all (no reaction to pressing or installing batteries).
• ⚡ When connected to charging (in models with USB) light-indicator.
• 📉 Weight readings are highly overstated or understated (for example, 100 kg instead of the real 70 kg).

The cost of repairs in official Xiaomi service centers (for 2026):

Before the service visit:

1. Take a picture of the error on the scale screen.
2. Write down the model and serial number (usually on a weight sticker).
3. Check if the warranty is valid (in the Mi Fit app or in the check).

⚠️ Note: If Xiaomi scales were purchased abroad (for example, on AliExpress), the warranty in Russian service centers may not work!

FAQ: Frequent questions about the errors "X" and "L" on the scales Xiaomi