How to fill up the meter Xiaomi: full instructions

The automatic soap dispenser from Xiaomi or its sub-brands (such as Jiudun) is a popular device that makes routine hand washing a convenient and hygienic process. However, many users face the first difficulties already in the first phase of operation, when the standard cartridge runs out, and it becomes necessary to replace or refuel it. The gadget is designed to minimize contact with bacteria, but this also imposes certain restrictions on how you will service it.

Unlike traditional pump dispensers, this is a foaming system that requires water and soap concentrate proportions to be followed, and a specific approach to opening the tank. Failure to do so can cause leaks or failures of the foam feeding mechanism. In this article, we will discuss in detail how to safely and efficiently refuel the device, what means are best used, and how to extend the life of your smart dispenser.

Design features and types of tanks

Before you start replacing content, you need to be clear about what kind of device modification you're dealing with. The Mijia and Jiudun ecosystem products are divided into two main types of refilling: replaceable cartridge models and refillable tank devices. They may look almost identical visually, but their fluid access mechanism is radically different. If you try to pour liquid into a disposable cartridge, you'll just mess it up and maybe fill it with an electronic board.

Interchangeable cartridge models (usually labeled as Replacement Cartridges) are originally designed as disposable elements. They often lack wide unscrew threads, and the body is sealed or closed on latches that are easy to break when sloppy open. Manufacturers expect to buy original interchangeable units that guarantee the perfect foam viscosity and sensory mechanism. However, enthusiasts often resort to neat opening of such cartridges to save money.

Rechargeable models are equipped with a wide-necked tank or a special cover that can be unscrewed without the use of force. These tanks often have a special grid or filter inside them to prevent large particles from entering the pump. It is important to carefully examine the bottom of the device: if there is a rubber cap or threaded connection, this is the type you are looking at. Using the wrong type of refill can violate the tightness and lead to oxidation of contacts.

⚠️ Warning: Never force the cartridge to unscrew unless it has a clear thread or opening instructions.You may damage the motor gears or rip the thread, after which the dispenser becomes unusable.

Preparation of necessary materials and tools

To refuel successfully, you'll need not only the liquid soap itself, but also a number of auxiliary tools that will ensure the cleanness of the process and the durability of the device. The main component is liquid soap, but it must meet certain parameters of viscosity. Too thick soap will clog the pump, and too liquid will not form a stable foam, draining from your hands like water.

If you plan to open the original cartridge or simply wash the tank thoroughly before refilling, you will need tools. To delicately open the latches, thin plastic blades (spoogers) that are used in smartphone repairs are ideal. Metal tools such as knives or screwdrivers are highly undesirable, as they are easy to damage the case or punctur the soft plastic of the container.

• 🧴 Liquid soap concentrate (preferably with a neutral pH so as not to damage).
• 💧 Distilled or filtered water (to dilute the concentrate in the desired proportion).
• 🧼 Syringe volume 10-20 ml or funnel with a thin nose (for careful pouring without splashing).
• 🧽 Microfiber wipes and soft cleaning agent (for wiping the case and neck).

Special attention should be paid to water. Using tap water with a high content of hardness salts can lead to the formation of scale on the heating element (if any) or in the foam supply channels. This is especially critical for regions with very hard water. Filtration of liquid is a simple step that will significantly extend the life of your gadget.

Step-by-step: Replacement of the cartridge

The process of replacing the cartridge in models where it is provided by the design is as simple as possible and takes seconds. First, remove the top dispenser cover from the main body. In most Xiaomi Mijia models, this is done by turning the top counterclockwise or easily pulling up if the design is modular. Make sure the device is turned off or in standby mode so that the sensor does not work at the wrong time.

When you remove the metering head, you'll see a cylindrical tank. If this is a model with a replacement unit, the old cartridge is simply twisted out or removed by moving upwards. The new cartridge is placed in its place before clicking or stopping. It's important to make sure that the guides are aligned so that the sealing rings are not damaged. Once you install the new cartridge, assemble the structure in reverse order.

If you use a reusable tank, the process is different. First, you have to completely empty the residues of the old soap. Then the tank is thoroughly washed with warm water. If there is plaque on the walls, you can use a weak solution of citric acid, but after that you need to rinse very carefully. The new soap is poured through the top hole, preferably with a funnel, so as not to soil the thread.

After filling, be sure to wipe the neck and thread with a dry wipe. The presence of a soap film on the thread can cause excessive pressure to occur when the lid is twisted, and the liquid will squeeze out at the first press.

How to properly dilute soap concentrate

One of the most common mistakes users make is to use a regular liquid soap from large canisters without prior preparation. Standard store soap is often too thick for Xiaomi foamers. If you pour it in its pure form, the motor will work with overload, and at the exit you will either get a thick mass or the device will not work at all, signaling an error.

The optimal mixing ratio depends on the concentration of your product. For most specialized concentrates, a ratio of 1:10 or 1:15 is recommended (one part soap per 10-15 parts of water). If you use regular soap, the ratio can be 1:5. Experimentally you can achieve the perfect foam density. Too watery mixture will drain quickly, without providing the proper antibacterial effect.

Recommended formula:


Reservoir volume: 300 ml




Concentrate: 20-30 ml




Water: rest volume up to 300 ml

It's best to mix the components in a separate container, and then pour the finished mixture into the dispenser tank, so you don't have to foam too much inside the bottle during the shaking process. If you do mix right in the tank, do it carefully, without any intense shaking, let the air bubbles settle before you put the lid in.

⚠️ Attention: It is strongly recommended not to use soap with solid abrasive particles (scrabs), glitter or oily additives. Such components will inevitably clog the thin channels of supply and will disable the mechanism.

Opening and filling disposable cartridges

For those who want to save on supplies, there is a method of refilling original cartridges, a process that requires precision and skill, and the essence of the method is to dismantle the bottom of the cartridge or carefully flex the plastic petals on which the dispenser is held, and usually at the bottom of the cartridge there is a decorative sticker or a cap under which the mounts are hidden.

Using a thin plastic blade or scalpel (act carefully!), you need to tamper with the bottom cover. In some models, press the center of the bottom hard enough to squeeze out the inner platform with the valve. Once access is opened, the inner container is washed with a warm water syringe, expelling the remnants of the old soap, then a new mixture is pumped with a syringe.