Xiaomi Body Composition Scale 2: A Complete Guide to Using Smart Scales

The Xiaomi Mi Body Composition Scale 2 is not just a weight measurement device, but a full body composition analyzer with 13 key indicators: from body mass index (BMI) to visceral fat. However, many users face difficulties in first connecting or interpreting data. This article will help to understand how to use the device correctly, avoid typical errors and maximize its ability to monitor health.

Unlike classic mechanical scales, Xiaomi’s smart model requires synchronization with a smartphone through the Mi Fit app (or Zepp Life for newer versions). Without the right setup, you’ll only get basic data — weight and BMI — without access to advanced analytics. We’ll go through each step in detail, from unpacking to decoding medical terms in reports.

We'll focus on calibrating the sensors before the first weigh-in, a step that's often missed, which leads to distorted muscle mass and water levels, and how scales recognize different users in the family and why it's important to weigh at the same time of day.

Components and specifications

In the Xiaomi Body Composition Scale 2 scale box, you will find:

• 📦 Scales with 4 sensor electrodes (2 on the platform, 2 on the handle)
• 🔋 4 type batteries AAA (already established)
• 📄 Short instructions in several languages (without Russian)
• 📱 QR-code for downloading the Mi Fit application

Key technical parameters of the device:

Libra equipped with bioimpedance analysis technology (BIA), It's a technique that allows you to estimate the percentage of fat, muscle and water, but it has limitations: accuracy depends on the body's hydration, time of day, and even the phase of the menstrual cycle in women.

⚠️ Note: Xiaomi Body Composition Scale 2 is not designed to diagnose diseases. Body composition indicators are indicative and may differ from laboratory tests by 5-15%.

Preparation for first use

Before the first weighing, several mandatory steps must be taken:

Set the scales on a flat solid surface (tile, laminate)

Make sure the batteries are installed correctly (polarity!)

Download and install Mi Fit (or Zepp Life)

Register a Xiaomi account (or log in through the Google/Apple)

Turn on Bluetooth on your smartphone-->

Pay special attention to the place of installation of the scales. They should be on a hard surface - carpet or soft linoleum will distort the readings, and avoid places with high humidity (bathroom) and direct sunlight, which can heat the case.

To calibrate the sensors, do the following:

1. Stand on the scales with bare feet (socks distort the reading).
2. Hold on to the electrode handle with both hands – this is necessary for an accurate analysis of the upper body.
3. Stand still for 5-7 seconds until the screen ticks.

In the bathroom.

In the bedroom.

In the gym.

Kitchen.

Another place.-->

If the scales are not included, check:

• 🔋 Contacts of batteries (sometimes they are oxidized during storage)
• 📱 Permission to access Bluetooth in smartphone settings
• 🔄 Reset the scales (press and hold the 10 seconds switch on)

Connection to the Mi Fit application

Synchronization of scales with a smartphone occurs through the official application Mi Fit (for the first time). Android/iOS). The alternative is Zepp Life, which supports more Xiaomi devices but has a different interface:

Connection steps:

1. Open Mi Fit and click Profile → Add the device.
2. Select the Smart Libra category and the Mi Body Composition Scale 2 model.
3. Follow the instructions on the screen: turn on Bluetooth, stand on the scale.
4. Confirm the pairing in the pop-up window.

Once you've successfully connected, you'll see a Libra section with your measurement history, and you can:

• 📊 Look at the weight dynamics for the month/year
• 👤 Add profiles for family members (up to 16 users)
• 🔧 Set goals for weight and physical activity
• 📤 Export data to Google Fit or Apple Health

⚠️ Warning: If the scales are not synced, remove the device from the Bluetooth list on your smartphone and reconnect. Also check that Mi Fit has notifications enabled – without it, background sync will not work.

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For a more accurate analysis of body composition, weigh yourself on an empty stomach in the morning after going to the toilet. Avoid exercise 12 hours before the measurement - they temporarily increase the water level in the muscles.

How to weigh correctly: step-by-step instructions

The algorithm of correct weighing on Xiaomi Body Composition Scale 2:

Stand on the scales with bare feet, evenly spreading the weight.

Take the electrode handle with both hands (the palms must touch the metal contacts)

Stand up straight, don't talk or move.

Wait for the sound signal and the tick on the screen-->

Common errors that distort the results:

• 🧦 Weighing in socks or slippers (increases current resistance)
• 💦 Wet feet or palms (reduces the accuracy of bioimpedance)
• 🏃‍♂️ Measurement immediately after exercise (water and muscle readings will be overestimated)
• ☕ Weighing after a heavy meal or alcohol

Libra automatically recognizes the user by weight (with an error). ±2 kg. If there are people of similar weight in the family, select your profile manually in the Mi Fit application through Devices before weighing. → Libra → Select a user.

Decoding of body composition indicators

Xiaomi Body Composition Scale 2 measures 13 parameters.

Pay special attention to visceral fat, which is the fat surrounding the internal organs, and its high level (more than 10 for men and 9 for women) increases the risk of type 2 diabetes and hypertension, even if the figure looks slim.

Bone mass is often questionable, it reflects the mineral density of the skeleton and should be 2-5% of total weight, a decrease in this parameter may indicate osteoporosis (especially in women over 50 years old), but for accurate diagnosis requires densitometry - scales give only a rough estimate.

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To measure the dynamics objectively, compare the results at the same time of day (optimally, in the morning after the toilet), the difference between morning and evening measurements can reach 1-1.5 kg due to the fluid and food consumed.

Synchronize with other devices and services

Data from the scales of Xiaomi Body Composition Scale 2 can be integrated with other gadgets and platforms:

• 📱 Mi Band/Xiamo Watch: Weight and body composition data are automatically included in daily activity reports.
• 🍎 Apple Health: sync with Mi Fit → Profile → Applications and services.
• 🤖 Google Fit: similarly configured in the app menu.
• 💻 Excel/Google Sheets: Exporting History Through Libra → Data export (format) CSV).

To sync with Apple Health or Google Fit:

1. Open Mi Fit and go to Profile → Applications and services.
2. Select the right service and log in.
3. Set up export parameters (e.g., weight only or all metrics).
4. Enable background synchronization in the smartphone settings for Mi Fit.

If the data is not updated in third-party services:

• Check the Mi Fit permissions in your smartphone settings (Settings) → Annexes → Mi Fit → Permits).
• Update the app to the latest version.
• Reconnect the scales to the account (Profile) → Devices → Libra → Disconnect/Connect).

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To automate data analysis, create a table in Google Sheets with formulas for calculating dynamics, =(B2-B1)/B1*100 The percentage of weight change between the two measurements.

Fixing problems and frequent problems

Common mistakes and their solutions:

If the scales show an Err 2 or an Err 3, it indicates sensor problems.

1. Remove and put the batteries back in.
2. Wipe the electrodes on the platform and handle with a dry cloth.
3. Update the firmware of the scales through Mi Fit (Profile) → Devices → Libra → Update of the PO).

⚠️ Note: If after all the manipulations, the scales continue to give out an Err 5 error, this may indicate a hardware malfunction of the bioimpedance sensor. In this case, contact the Xiaomi service center - self-repair will lead to loss of warranty.

For resetting the scales to the factory settings:

1. Turn off the scales (press the button for 10 seconds).
2. Press and hold the power button while inserting the batteries.
3. Wait for the screen to blink (about 5 seconds) and release the button.

Tips for durability and care

To make the scales last longer:

• 🧹 Weekly wipe the platform and electrodes with a wet wipe (without abrasives!).
• 🚫 Do not place scales near sources of heat or moisture (for example, near a shower).
• 🔋 Remove the batteries if you don’t plan to use the scales for more than a month.
• 📦 Store in a vertical position to avoid deformation of sensors.

The battery life is about a year with daily use, and when the charge goes down, the battery icon with an exclamation mark appears on the screen, and only use alkaline batteries, the salt will run out in 2-3 months.

If the scales began to show an inaccurate weight (a deviation of more than 300 g), the cause may be:

• 🔧 Sensor imbalance (transfer the scales to another place and recalibrate).
• 🧲 Effect of magnetic fields (do not place near speakers or microwaves).
• 🌡️ Sharp temperature changes (for example, if the scales are on the balcony).

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To check the accuracy of the scales, use a check weight (for example, a weight of 10 kg). ±50 g, calibration or repair required.

FAQ: Answers to Frequent Questions