How to Use Xiaomi Lunch Box: A Complete Guide from Charging to Washing

Xiaomi's lunch boxes have been a lifeline for those who value hot food at work, school or on the road. These compact thermometers not only keep dishes warm, but also can heat or cool them, depending on the model. But many users are faced with the question of how to properly operate the device so that it lasts longer, what modes to choose for different types of food, and why sometimes the lunch box refuses to heat the food?

In this guide, we will take a look at all the nuances from the first switch on to the intricacies of caring for Xiaomi thermolunch boxes, including the popular Mi Smart Lunch Box and Mi Lunch Box 2. You will learn how to avoid typical errors (for example, overheating the battery or damage to the internal coating), and also discover hidden features that the manufacturer does not mention.

Spoiler: If you think that lunch boxes are just heated thermos, you'll be surprised at what they do. For example, some models can automatically switch between heating and maintaining the temperature depending on the type of food, and they come with special containers that you can wash in the dishwasher.

1. What are Xiaomi Lunch Boxes and How They Differ

There are several models of Xiaomi lunch boxes on the market, and their functionality varies significantly.

• 🔹 Mi Lunch Box 1/2 — basic models with heating support to 60–70°C and heat retention. Volume. ~500 ml, heating time ~30–40 Suitable for soups, porridge, pasta.
• 🔹 Mi Smart Lunch Box – “smart” version with mobile application, temperature control (40-100)°C) and cooling function: there are models with a 5200 mAh battery and 7800 mAh battery.
• 🔹 Mijia Portable Electric Lunch Box – premium series with fast heating (10-15 minutes), removable internal container of stainless steel and support for induction heating.

Key differences are presented in the table:

Important: models with a battery ≤3000 mAh is only suitable for maintaining temperature (for example, if you put hot food in them from home). To fully heat cold dishes, you need a battery from 5000 mAh.

2. First incorporation and preparation for use

Before using the first lunch box, Xiaomi must follow several mandatory steps:

1. Wash the container. The internal tank (if removable) should be washed with warm water with a mild detergent. Avoid abrasive sponges - they will damage the non-stick coating.
2. Charge the battery: Connect the device to the network using the original cable (usually) USB Type-C) and wait for full charge (the indicator will light up green: 🔋 Mi Lunch Box 2: 2-3 hours; 🔋 Mi Smart Lunch Box: 3-4 hours; 🔋 Mijia Portable: 4-5 hours.

A leak test.

⚠️ Warning: Never turn on an empty lunch box! This can cause the heating element to overheat and the device to fail. Minimum liquid/food volume is 200 ml.

Wash the internal container|Charge the battery to 100%|Check the tightness of the cover|Install a mobile application (for Smart models)|Read the safety instructions-->

For smart-driven models (Mi Smart Lunch Box), you will need to install the Mi Home app (available for Android and iOS).

• 📱 Adjust the temperature to within 1.°C;
• 📱 Set a heating timer;
• 📱 Monitoring the battery level;
• 📱 Receive notifications of completion of the process.

3. How to properly heat food: modes and time

Heating time and mode choice depend on the type of dish and the model of the lunch box.

• 🍲 Soups, broths, liquid porridge: heating to 70-80°C for 20-30 minutes. For even warming up periodically shake the lunch box (if the model allows it).
• 🍛 Thick dishes (pilaf, pasta, stew): temperature 90–100°C, time 30-40 minutes. Add 1-2 tbsp. spoonfuls of water to avoid burning.
• ☕ Drinks (tea, coffee): 60 is enough°C and 10-15 minutes. Use special thermal circles from the kit.

⚠️ Warning: Do not heat products high in sugar (jam, condensed) or fat (pork spike, butter) in Xiaomi lunch boxes, which can burn to the walls of the container, and cleaning them will damage the coating.

For models with adjustable temperature (Mi Smart Lunch Box) use the following settings:

(1) Battery charge (must be) ≥50%);

(2) Close density (seal leakage);

3) Type of cookware inside - metal containers slow down heating.-->

4. Cooling function: when and how to use

Not all Xiaomi lunch boxes are able to cool food, only the Mi Smart Lunch Box and Mijia Portable are equipped with this feature.

• 🥛 Storage of dairy products (yogurt, cottage cheese) for 4-6 hours;
• 🍎 Preserving the freshness of fruits and vegetables;
• 🍣 Transportation of perishable dishes (sushi, salads with mayonnaise).

How to activate cooling:

1. Make sure the battery is charged. ≥80% (cooling consumes a lot of energy).
2. Place the food in the container and close the lid.
3. In the Mi Home mobile app, select Cooling mode and set the temperature 5-10°C.
4. Cooling time: 15-20 minutes to reduce temperature by 10-15°C.

⚠️ Warning: Don't put hot meals in the cooling lunch box! A sudden temperature drop can cause condensation inside the device and short circuit. First cool the food to room temperature.

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Xiaomi Lunch Box Cooling Is Not a Refrigerator! Temperature Keeps Level +5…+10°C only for 2-3 hours. Use a refrigerator bag for long-term storage of perishable products.

5. Care and cleaning: how to prolong the life of lunch box

The life of Xiaomi Lunch Box is directly dependent on proper care.

• 🧼 Washing the container: after each use, wash the inner container with warm water with a mild detergent. Use baking soda (1 tsp per 1 liter of water) to remove fat).
• 🔌 Electronics care: wipe the body with a wet wipe, avoiding water entering the connectors. Use a dry brush to clean the contacts.
• 🔋 Battery: Store lunch box with a charge of 40-60% (don't discharge completely!). Calibrate once every 3 months: fully discharge, then charge to 100%.

What can't be done:

• ❌ Wash lunch boxes in the dishwasher (even if the container is removable – high temperatures will damage the sealer).
• ❌ Use abrasive cleaning products or metal sponges.
• ❌ Dry the device on a battery or under direct sunlight.

For models with removable internal container (Mijia Portable) is allowed to wash in the dishwasher at temperatures up to 50°C and no aggressive detergents, but the case itself can only be wiped with a wet cloth.

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If the lunch box starts to smell plastic, soak the inner container for 1 hour in a solution of water with vinegar (1:1).

6. Typical problems and how to solve them

Even with careful use, Xiaomi lunch boxes can fail. Consider the most common malfunctions and how to fix them:

⚠️ Warning: If Xiaomi's lunch box starts sparkling or smelling burns, immediately disconnect it from the network! Continued use could lead to fire.

For models with a mobile application (Mi Smart Lunch Box) in case of failures in work will help reset settings:

1. Open the Mi Home app.
2. Go to the device settings.
3. Select Reset to factory.
4. Confirm the action and reconnect the lunch box.

7.Secret functions and life hacks

Xiaomi Lunch Boxes have a few hidden features that are not mentioned in the instructions:

• 🔄 Multi-Chair mode: Some models (Mijia Portable) can cook from scratch, such as cooking rice or pasta, adding water in a 1:2 ratio and selecting a temperature of 100°C. 40 minutes.
• 📱 Voice control: If the lunch box is connected to the Mi Home, it can be controlled via Alice or Google Assistant (teams: "Set the temperature 80 degrees»).
• 🔋 Power Bank: Models with a battery ≥5000 mAh can be used as an external battery for a smartphone (via the device). USB Type-C).
• ⏱️ Delayed Start: In the Mi Home app, you can program the heating so that the food is ready for a certain time (for example, for lunch break).

Lifehack to save charge: If you only need to keep your temperature (rather than heat your food), use Keep Warm mode instead of Heating. It consumes 2-3 times less energy.

FAQ: Frequent questions about Xiaomi Lunch Boxes