Xiaomi’s automatic soap dispensers are one of the most popular smart home solutions, combining hygiene, convenience and modern technology. These compact devices (such as the Mijia Smart Soap Dispenser or Viomi V2) recognize hand movements and deliver a portion of detergent without contact with the surface. But even such simple gadgets have the nuance that improper refueling can lead to leaks, clogs or sensor breakdowns.
In this article, you will find a step-by-step video instruction on how to fill a Xiaomi dispenser with any liquid soap (including antiseptics and shower gel), a breakdown of 5 common errors that shorten the life of the device, and a table on the compatibility of detergents with popular models. If you first encounter such a device, save this page in bookmarks: here are the answers to all questions, from choosing soaps to cleaning nozzles.
Which Xiaomi dispenser models support liquid soap filling?
Not all Xiaomi smart dispensers are universal, for example, some models are designed only for foam or have liquid viscosity restrictions. Below is the current list of devices that can be filled with regular liquid soap (including antibacterial gels and shampoos):
- 🔹 Mijia Smart Soap Dispenser (base model, volume of 300 ml)
- 🔹 Viomi Smart Soap Dispenser V2 (sensor-controlled, 400 ml)
- 🔹 Xiaomi Youpin Automatic Soap Dispenser (with adjustable dose)
- 🔹 Deerma DX700S (Budget option, compatible with soap and foam)
⚠️ Note: Xiaomi Soap Dispenser Pro and Viomi V3 They're only designed for foam, so filling with liquid soap will clog the machinery. Check the labeling on the case or in the instructions before use.
If you are not sure of compatibility, pay attention to the viscosity of the soap: the optimal indicator is from 1000 to 3000 mPa·s (indicated on the package). Too thick gels (for example, for shaving) can clog the pump.
Step-by-step: how to fill up the dispenser Xiaomi (with video)
The refueling process takes no more than 5 minutes, but requires precision. Below is a universal algorithm for all compatible models. If you're more comfortable watching than reading, at the end of the section there's a video demo of the Viomi V2.
- Turn off the power. Remove the batteries or disconnect the batteries. USB-cable (if the dispenser is powered by the mains) This will prevent the sensor from accidentally triggering during refueling.
- Remove the top cover. Most models unscrew it counterclockwise. On the Deerma DX700S, the lid is latched, press it from the side.
- Remove the tank. Inside you'll see a removable soap tank. Pull it up carefully. In some models (like the Mijia), the tank is integrated into the body, and then the pouring takes place through the neck.
- Rinse the tank. If you fill the dispenser for the first time, rinse the tank with warm water. If you change the type of soap (for example, from antiseptic to shower gel), use vinegar (1:1) to remove the residues.
- Fill the soap. Fill the tank to 80% volume (not to the edges!) Use a funnel or bottle spout for convenience. Avoid soap hitting the level sensor (usually located at the bottom of the tank).
- Install the tank back. Check that the sealing ring (if any) fits tightly. On models with a pump (Viomi V2), make sure that the tube is not bent.
- Close the lid. Clockwise it before you click. On the Deerma DX700S, make sure the latch is locked.
- Test the work. Put your hand up to the sensor, the dispenser should give you a soap, and if the liquid doesn't come in, check the position of the tube and the battery level.
Check the compatibility of the soap with the dispenser model |
Power off the device |
Prepare a funnel or nozzle for pouring |
Wash the tank when changing the type of soap |
Do not fill the tank to the edges (maximum 80%)-->
🎥 Video Instructions: Watch the refueling process with the example of Viomi Smart Soap Dispenser V2 (click on the playback).
Note: The video is in Chinese, but the action is intuitive, with the main steps being: lid removal (0:25), soap pouring (1:10), testing (2:00).
5 mistakes in refueling, which spoil the dispenser Xiaomi
Even experienced users of smart tech sometimes miss important details.-5 errors that lead to breakdowns or reduce the life of the dispenser:
- Using incompatible soaps: Scrub gel showers or thick cream soaps clog the pump and nozzle. Example: Dove Cream Moisture or Nivea Soft are not suitable for most models.
- Soap overflows above the maximum mark, which leads to leakage through the seals and oxidation of the battery contacts, and the Mijia Smart Soap Dispenser has a maximum level of 250 ml, although the tank is designed for 300 ml.
- Soap pouring without flushing the tank, the residues of the previous liquid mix with the new one, forming flakes that clog the system, especially when changing from antiseptic to regular soap.
- Ignoring viscosity: Soaps with viscosity above 3,000 mPa·s (e.g. Scholl Velvet Smooth) are not pumped. Check the parameters on the package!
- Wet storage, condensation on the body leads to corrosion of contacts, do not place the device near the shower or sink without a protective cap.
What happens if you put shampoo in the dispenser?
⚠️ Warning: If the dispenser gives out soap in jerks or bubbles after refueling, it's a sign of suffocation. To fix the problem, remove the tank, shake it slightly, and set it back, holding the device at an angle of 45.°.
What soap is better to pour into the dispenser Xiaomi: compatibility table
Not all detergents are equally safe for smart dispensers. Below is a table of proven options that won't damage the mechanism or cause blockages. Data are based on user tests and manufacturer recommendations.
| Model of the dispenser | Recommended soap | Viscosity (mPa·s) | Notes |
|---|---|---|---|
| Mijia Smart Soap Dispenser | Safeguard Antibacterial, Palmolive Aloe | 1200–1800 | Do not use gels with abrasives |
| Viomi Smart Soap Dispenser V2 | Dettol Original, Lifebuoy Total 10 | 1500–2500 | Supports liquids with alcohol up to 60% |
| Deerma DX700S | Fairy Liquid Soap, Ecolab Skinman | 1000–2000 | Sensitive to thick gels |
| Xiaomi Youpin Automatic | Simple hand foam, Cuticura pH-neutral | 800–1500 | It works better with foam than liquid. |
🔍 Tip: If you want to use flavored soap (such as lavender or citrus), choose options without oils in the composition. Essential oils oxidize the plastic tank and can spoil sealants.
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Before buying soap, check its viscosity on the manufacturer's website. If you don't have any data, drop a little gel on an inclined surface. If it drains slowly (like honey), then the viscosity is above 3,000 mPa·s and is not suitable for a dispenser.
How to wash the Xiaomi dispenser when changing soap or clogging
If the dispenser started dispensing soap unevenly or stopped working at all, the cause is a clogging system.
- When changing the type of detergent (for example, from antiseptic to shower gel).
- If the soap comes with interruptions or jerks.
- After a long period of inactivity (more than 2 weeks without use).
🛠 Step-by-step flushing:
- Remove the tank and drain the remaining soap.
- Fill the tank with warm water (40–50°C) by 50% and add 1 tbsp. l vinegar or citric acid.
- Set the tank back and turn on the dispenser. Press the sensor 5-7 times to pump the solution through the system.
- Pour the liquid and repeat washing with clean water 2-3 times.
- Dry the device for 12 hours (not in direct sunlight!).
⚠️ Warning: Do not use aggressive detergents (such as Domestos or White) to wash, which destroy seals and corrode contacts. Avoid abrasive sponges when cleaning the case.
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If after washing the dispenser still does not work - check the tube for the presence of excesses and clean the nozzle with a toothpick (carefully!).