Xiaomi Composition Scale 2: How to properly turn on and configure smart scales

The Xiaomi Mi Body Composition Scale 2 is not just a weight measuring device, but a full body composition analyzer with 13 key indicators. However, many users face difficulties already at the stage of the first turn on: the device does not respond to pressing, does not sync with a smartphone or shows errors. In this article, we will discuss the step-by-step launch algorithm, typical problems and ways to solve them, from unpacking to the first successful weighing.

Structurally, the Composition Scale 2 is different from the classic scales by the lack of mechanical buttons and screens. All control is through the Mi Fit app (or Zepp Life for new versions), and the power is provided by an integrated battery. This means that the "on" here is a set of actions: activation of power, connection to a smartphone and calibration. If you miss even one step, the scales may not work correctly or show some data.

It's important to understand that Xiaomi Composition Scale 2 doesn't have a physical switch. The device automatically goes to sleep to save charge, and it wakes up when you click on the platform or connect to an application. So the phrase "how to turn on" here is conditional - we are talking about the first start and set up communication with the phone.

Preparing for the first turn on: what to do before launch

Before you start setting up, make sure you have everything you need.Combined with the Xiaomi Composition Scale 2 scales should be:

• 📦 The scales themselves are in the protective film.
• 🔋 4 type batteries AAA (In some versions, the built-in battery)
• 📄 Short instructions in several languages (without Russian)
• 📱 QR-code for downloading the Mi Fit application

If you don't have batteries in your kit, it's not a marriage. Some Composition Scale 2 shipments come with a built-in 200mAh lithium-ion battery that's already charged at the factory. To check the power type, flip the scales: under the rubber legs there will be either a battery bay or a smooth surface (meaning the battery is built-in).

Requirements for a smartphone to work with weights:

• 📱 Android 5.0 or newer / iOS 10.0 or newer
• 🔄 Bluetooth 4.0 enabled (or higher)
• 📶 Stable Internet connection (for downloading applications and updates)
• 📲 Free space on the phone (the Mi Fit app weighs) ~100MB)

⚠️ Note: If you are using an iPhone with iOS 16+, Before installing Mi Fit, go to Settings → Confidentiality → Bluetooth and allow the app to access Bluetooth data. Without that, the scales won't be able to connect.

Step 1: Install batteries or charge the built-in battery

Depending on the modification of Composition Scale 2, the procedure will be different.

Option A: Libra with batteries (removable compartment)

1. Turn the scales over and find the battery compartment under the rubber legs.

2. Move the compartment cover to the side (usually there is an arrow or PUSH inscription).

3. Install 4 AAA batteries, observing the polarity (+ and − are specified in the compartment).

4. Close the lid until you click.

Option B: Libra with built-in battery

1. Connect the scales to the network using a USB-C cable (included in some versions).

2. the charging indicator (a small LED under the platform) should light up in white.

3. Charging up to 100% takes ~2 hours. You can turn off the cable with a constantly burning indicator.

The built-in battery in Composition Scale 2 is designed to last ~180 days of battery life with daily use (according to Xiaomi).Once fully discharged, the scales may not be switched on before being connected to charging.

Step 2: Download and configure the Mi Fit app

Xiaomi Composition Scale 2 doesn’t work autonomously – all data is transferred to the Mi Fit app (or Zepp Life for newer versions). Without it, you’ll only see the weight numbers on your smartphone screen, but you won’t get body composition analysis.

Installation instructions:

1. Open the App Store (for iOS) or Google Play (for Android).
2. Type in Mi Fit and select the official app from Xiaomi Inc.
3. Click Install and wait for the download to be completed.
4. Launch the app and register (you can use Google, Apple ID or phone number).

After registration:

• 🏠 On the main screen, tap the icon. + (add).
• 🔍 In the list, select Libra. → Mi Body Composition Scale 2.
• 📱 Allow the app to access Bluetooth and Notifications.

⚠️ Warning: If Composition Scale 2 is not listed, upgrade the Mi Fit app to the latest version. Older versions may not support newer weight models.

Step 3: Synchronizing the scales with the phone

Now you need to get a smartphone scale.

1. Open the Mi Fit app and go to Profile → My Devices section.
2. Select the Mi Body Composition Scale 2.
3. Put the scales on a flat, hard surface (not on the carpet!) and press the platform with one finger.
4. The phone will display a message Search for the device... Wait for the process to be completed (usually 10–30 seconds).
5. After successful connection, the scales will emit a short sound signal, and their icon will appear in the application.

If synchronization does not occur:

• 🔄 Reboot Bluetooth on your phone (turn off and turn on again).
• 📱 Remove the scales from the device list in Mi Fit and reconnect.
• 🔋 Check the battery/battery charge (if the indicator is not on, charge the scales).

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If the scales aren’t there, try connecting them in another room – sometimes interference from other Bluetooth devices (such as wireless headphones or speakers) interferes.

Step 4: First weighing and calibration

Once synchronized successfully, you can start the first measurement, and it's important to follow the right sequence, otherwise the data may be inaccurate.

1. Launch the Mi Fit app and select the scale icon.
2. Remove shoes and socks – measurements are taken with bare feet.
3. Stand on the scales exactly in the center of the platform, spreading the weight on both legs.
4. Do not move or talk during measurement (this affects the accuracy of the body composition analysis).
5. Wait for the beep and the results to appear in the application (usually takes 5-10 seconds).

What is the analysis of the scale of Composition Scale 2:

⚠️ Attention: Composition Scale 2 uses bioimpedance to accurately analyze body composition, and it only works with bare feet, socks or tights distort results by 10 to 15 percent.

Common mistakes and their solution

Even with the right setup, users face problems.

Mistake 1: Libras are not included

Causes and solutions:

• 🔋 Battery discharged → Connect to charging for 2 hours.
• 🔌 Batteries are incorrectly installed → Check the polarity.
• 📱 Libras out of sync → Remove the device in Mi Fit and connect again.
• 🛠️ Contact damaged. → If the scales fall, check the integrity of the body.

Error 2: Data is not stored in the application

What to do:

• 📶 Check the Internet connection (data is uploaded to the cloud).
• 🔄 Update the Mi Fit app to the latest version.
• 📱 Reboot your smartphone.
• 🔄 In the weight settings in Mi Fit, enable Autosynchronization.

Mistake 3: Libra shows wrong weight

Sizing:

• 🧘 Place the scales on a flat, hard surface (not on the carpet!).
• 🔧 In the Mi Fit app, find the Settings section of the Weights → Sizing.
• 📏 To check the accuracy, use weights with a known weight (for example, 5 kg).

Additional functions and settings

Xiaomi Composition Scale 2 supports a number of hidden features that many people don’t know about:

• 👶 Child Mode: Included in Mi Fit in profile settings, allows you to track the height and weight of the child with age adjustment.
• 🏋️ Sports mode: Analyzes the dynamics of muscle mass for fitness.
• 📊 Data export: Results can be uploaded to Google Fit or Apple Health.
• 🔒 Multiplayer mode: Up to 16 profiles per scale (recognizes the user by weight).

To include these functions:

1. Open Mi Fit and go to Profile → My Devices → Composition Scale 2.
2. Select the Libra Settings.
3. Activate the necessary options (for example, Sync with Google Fit).

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For maximum accuracy, update the firmware of the scales through the Mi Fit app. New versions improve the algorithms for analyzing body composition and correct synchronization errors.

FAQ: Frequent questions about Xiaomi Composition Scale 2