Xiaomi scales show “L”: causes of error and 7 ways to solve

You've stepped onto a Xiaomi Mi Body Composition Scale or Xiaomi Smart Scale 2, and instead of the usual numbers, a mysterious letter "L" has been displayed on the screen? Don't panic - this is not a breakdown, but a signal about a problem that can be solved yourself. The "L" error (from English "Low" or "Load") occurs in 80% of users of Xiaomi smart scales, but in 95% of cases is solved without contacting the service center.

In this article, we'll look at all the possible causes of the "L" on the scale screen, from the banal imbalance of sensors to firmware failures, how to distinguish hardware from software error, what manipulations will help reset the settings, and when it's time to carry the device for repair, and a unique way to calibrate the scales with a coin that is not described in the official instructions.

If the scales show an "L" continuously (even without loading) or the letter is accompanied by a flashing battery indicator, the problem is more serious than it seems.

What the letter “L” means on Xiaomi scales: decoding the error

The letter “L” on Xiaomi’s smart scale display is an error code that signals the inability to measure weight correctly. Depending on the model and firmware version, it can mean:

• 🔋 Low battery power (relevant for replaceable battery models, such as Mi Scale 1).
• ⚖️ Overload or underload – weight is outside the permissible range (usually 100 g – 150 kg).
• 📶 Communication failure with sensors – calibration is broken or board is damaged.
• 🔄 Initialization error – scales can’t “wake up” after long downtime.

Most of the time, the L is caused by software failures, not physical failures, such as if you put a scale on a long-pile carpet or unevenly spread the load (stood on the edge of the platform), but there are more insidious causes, such as oxidation of battery contacts or damage to strain gauges after a fall.

💡 Interesting fact: In the early versions of the Xiaomi Mi Scale firmware, the “L” error could also mean locking due to humidity (if the sensors were closed from condensate.

Reason. №1: Incorrect placement of scales (and how to fix it)

The most common cause of the L error is the wrong surface on which the scales are standing. Xiaomi smart scales are equipped with high-precision strain gauges that require a hard and flat support, and even small bumps or soft coatings can distort the readings.

🔹 What do you do:

1. Then, put the stains on the surface of the stained surface.
2. Check if they are on an inclined plane - use the level (you can attach an equalizer app on your smartphone).
3. Make sure there is no dust or debris under the legs of the scales - wipe them with a dry cloth.

⚠️ Note: If the scale is on a high-pile carpet, the sensors can detect false oscillations, in which case the error "L" will appear even with the correct calibration.

Remove carpet or soft coating

Check the level of the floor

Clean the legs of the scales of dust

Put the scales on a hard surface-->

Reason. №2: Sensor imbalance (step-by-step calibration)

If Xiaomi scales show an "L" even on a flat surface, the problem may be the imbalance of the strain gauges, which occurs after transportation, falling or prolonged downtime. Fortunately, most models support manual calibration.

🔹 How to calibrate the scales:

1. Turn on the scales (click on the platform or insert batteries).
2. Wait until the "0.0" or "--" appears on the screen.
3. Tap your finger on each corner of the platform 2-3 times, which helps wake the sensors.
4. Put on the scale an object with a known weight (for example, a bottle of water 1-1.5 liters) and check the readings.

💰 Secret Lifehack: Use a 5 rub coin (weight exactly 6 grams) to calibrate accurately. Place it in the center of the platform -- if the scales show a value close to 6 g, the sensors work correctly. If not, you need to reset the settings.

Reason. №3: Power problems (batteries, contacts, charging)

The “L” error is often caused by insufficient voltage, and this is true for models with replaceable batteries (Mi Scale 1) or with built-in batteries (Smart Scale 2). Even if the battery indicator does not flash, the problem can be:

• 🔋 Discharged batteries (voltage below 1.2 V).
• 🔌 Oxidized contacts – especially if the scales were stored in a wet room.
• ⚡ Faulty battery (for models with built-in battery).

🔹 How to check:

1. For models with batteries: replace the batteries with new ones (preferably alkaline, for example, Duracell or Energizer).
2. For models with a battery: connect to charging for 2-3 hours (even if the indicator is green).
3. Check the contacts of the battery compartment - if there is a green coating, clean it with a cotton swab with vinegar.

⚠️ Warning: If the scales still show "L" after the battery is replaced and they don't turn on, you may break the circuit on the board.

Reason. №4: Firmware failures and synchronization with Mi Fit

Xiaomi’s smart scales are tightly integrated with Mi Fit (or Zepp Life in newer versions) if the device’s firmware is outdated or sync data is corrupted, this can cause an “L” error.

• 📱 Updates to the Mi Fit app.
• 🔄 Resetting smartphone settings.
• 🌐 Changes to Wi-Fi networks or SIM-map.

🔹 How to fix it:

1. Open Mi Fit, go to Profile → Devices → Your scales → Settings.
2. Click Update the firmware (if available).
3. Remove the scales from the application and reconnect them:

📌 Important: If the scales are not defined in Mi Fit, try:

• 📵 Disable Bluetooth on your smartphone and turn it on again.
• 🔄 Reboot the phone.
• 📱 Install an alternative application (e.g. Mi Home).

💡

If the scales aren’t synced, try connecting them to another smartphone (like friends or relatives) to help determine if there’s a problem with the scales or your phone.

Reason. №5: Physical damage (falls, moisture, wear and tear)

If Xiaomi scales have fallen, been exposed to moisture, or been operated in extreme conditions (such as a high-humidity bathroom), an “L” error may indicate a hardware malfunction:

• 💧 Short circuit due to water intrusion.
• 🔧 Damage to strain gauges (cracks on board).
• 🔌 Detachment of contacts after impact.

🔹 How to diagnose:

1. Examine the body for cracks, dents or traces of corrosion.
2. Try to move the platform gently – if you hear a crunch or creak, the internal mechanics may be damaged.
3. Check if the error "L" only appears at a certain load (for example, over 100 kg).

⚠️ Warning: If the scales smell like a burn or if the board shows blackened areas, don't turn them on.

💡

If the scales fell from a height of more than 1 meter or were in the water for a long time, repairs will cost more than buying new ones, in such cases it is more rational to consider replacing the device.

When to contact the service: signs of a serious breakdown

In 90% of cases, the “L” error on Xiaomi scales can be fixed on your own, but there are symptoms for which professional diagnosis is necessary:

• 🔥 Libras heat up during work.
• 🔌 The “L” error appears even without load (on empty scales).
• 📉 Indications jump chaoticly (for example, 50 kg) → 120 kg → «L»).
• 🔋 Battery indicator flashes red, but replacing batteries does not help.

🔹 Cost of repair:

💡 Tip: Before visiting the service, take a picture of the "L" error on the screen and write down the conditions under which it manifests itself.

FAQ: Frequent questions about the “L” error on Xiaomi scales