How to Check the Balance and Accuracy of Xiaomi Scales: A Complete Guide with Instructions

Xiaomi scales are some of the most popular smart gadgets for weight and body composition. But even high-tech devices can fail to show the wrong weight, swim when measuring or refuse to turn on. Most often, the problem lies in sensor imbalance, improper calibration or mechanical damage. In this article, we will discuss how to diagnose and fix problems without resorting to a service center.

We’ll look at all the current models, from the budget Mi Smart Scale 2 to the advanced Xiaomi Body Composition Scale 3, as well as typical user errors that lead to inaccurate readings. If your scales suddenly start to “lie” or behave erratically, the following steps will help to restore them to work.

Why Xiaomi scales show the wrong weight: the main reasons

Before you test the equilibrium, it's important to understand what causes the errors.-5 Reasons Why Xiaomi Smart Scales Could Lie:

• 📍 Uneven surface: even a minimum slope of 2-3° distorts the reading by 10-15%.
• 🔋 Battery discharge: at voltages below 2.8V, sensors begin to fail.
• 🧲 External interference: magnetic fields from routers, microwaves or metal objects near.
• 🔄 Calibration failure: After falling or transporting the scales require re-tuning.
• 🛠️ Mechanical damage: cracks in the touch panel or oxidation of contacts.

Interesting fact: according to tests of the laboratory DXOMark, even the new scale Xiaomi can have a factory error of up to ± 0.3 kg. But if the deviation exceeds 0.5 kg - this is already a reason for diagnosis.

Preparation of the scales for inspection: what to do before calibration

Before checking the balance, follow the mandatory preparatory steps:

1. Set the scales on a flat surface. Use a building layer or an equalizer app (like Bubble Level for a smartphone), with a tolerance of no more than 1°.
2. Clean the contacts. Wipe the scale legs and touchpad with an alcohol napkin, and fat or dust can distort the signal.
3. Check the battery. Replace the batteries with new ones (even if the indicator shows charge). For models with a battery (Xiaomi Scale 3), complete the full discharge/charging cycle.
4. Update your firmware. In the Mi Fit or Zepp Life app, check for updates for your model.

Critically, if scales fall or are hit, don’t use them without first being diagnosed. Damaged sensors can give not only inaccurate but dangerously low readings (e.g., 60 kg instead of 80 kg), which can lead to errors in health control.

Set the scales on a solid surface (not a carpet!)

Remove the protective film from the sensors (if any)

Check the integrity of the glass and legs

Disconnect nearby electrical appliances-->

How to check the balance of Xiaomi weights: step-by-step instructions

To diagnose the balance, you will need a reference weight (e.g., a weight of 5 kg or a bottle of water with a tag).

Step 1: Test for the stability of the readings

Stand on the scale and record the result. Then go down and repeat the measurement 5 times in a row.

• ±0.1 kg for Mi Smart Scale 2
• ±0.2 kg for Xiaomi Body Composition Scale 3
• ±0.3 kg for Redmi Smart Scale.

If the spread is greater, calibration is required.

Step 2: Checking the uniformity of the load

Put a reference weight (e.g., 5 kg) in the center of the scale, then alternately in each corner. Record the readings. The ideal result is the same values in all positions.

If the difference exceeds the critical value, the sensors are faulty or require deep recalibration.

Step 3: Diagnostics through the App

In the Mi Fit or Zepp Life app, go to Device Profile → Settings → Calibration. Follow the on-screen instructions. For Body Composition Scale 3 models, check:

• 🔌 Status of electrodes (must be clean and dry);
• 📱 Compatible with a smartphone (Android) 6.0+/iOS 10+);
• 🌡️ Temperature in the room (optimally 18-25)°C).

💡

If the scale shows an Err or Lo error, it means battery drain or overload. To reset the error, remove the batteries for 10 seconds, then set back.

Xiaomi’s Manual Calibration Scales: When and How to Do It

If automatic calibration through the app didn’t work, manually adjust it, which is suitable for all models except the Xiaomi Body Composition Scale 3 (it has a closed calibration system).

Method 1: Through the service menu

For the Mi Smart Scale 2 and Redmi Smart Scale:

1. Turn on the scales (click on the touch panel).
2. Hold the power button for 10 seconds until the CAL appears.
3. Place a reference weight (for example, 10 kg) on the scale.
4. Wait for the beep and the PASS inscription.

Method 2: With ADB commands (for advanced commands)

If the scales are connected to Mi Home, you can send a calibration command via ADB:

adb shell am start -a android.intent.action.VIEW -d "mihome://device/cib/calibrate?did=YOUR_DEVICE_ID"

Replace. YOUR_DEVICE_ID real ID You will find your own scoring in the scoring of your home).

Common Errors in Balance Checking and How to Avoid Them

Many users make the problem worse by doing the wrong thing, and here are the most common mistakes and their consequences:

⚠️ Warning: Never put the scales on a carpet or soft coating, which not only distorts the readings, but can also cause sensors to break due to uneven load distribution.

• 🚫 Using wet feet: water conducts current and distorts bioimpedance readings (for models with body composition analysis).
• 🚫 Calibration on cold scales: sensors should warm up to room temperature (minimum 30 minutes).
• 🚫 Ignoring updates: Firmware often fixes calibration errors (for example, Scale 3 version 1.4.7 fixes a weight floating bug).

Another thing is, if you use scales to weigh pets, remember that their paws put a point load on them. To be precise, put them in a box and weigh them with them, then subtract the weight of the box.

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Check the balance of the scales at least 1 time every 3 months - especially if you move them often.

When self-diagnosis does not help: signs of serious malfunctions

If after all the manipulations, the scales continue to lie or behave unsteadily, perhaps the problem is deeper.

• 🔴 Libras are not turned on even after replacing batteries → malfunctioning.
• 🔴 The testimonies will "jump" at the slightest movement → strain gauges damaged.
• 🔴 Error 2 or Err 3 → memory-failure.
• 🔴 The weight only shows» → breakage of contacts between sensors and board.

In such cases, self-repair can lead to permanent damage. Contact Xiaomi Service Center (addresses can be found on mi.com/service).

⚠️ Warning: Do not use scales with visible cracks on glass - it is dangerous! chipping can lead to cuts or electrical breakdown (relevant for models with bioimpedance).

FAQ: Frequent questions about Xiaomi weights check