How to insert batteries into the Xiaomi Mijia dispenser

Xiaomi’s modern smart home gadgets are pleasing with their design and functionality, but even the most technologically advanced devices require periodic replacement of power sources. A smart liquid soap dispenser like Xiaomi Mijia Automatic Induction Soap Dispenser runs on batteries, and their discharge is a regular situation that every owner faces. Many users wonder how to extract waste elements and install new ones so as not to damage fragile latches of the case.

The replacement process seems simple, but the design of the device has its own characteristics, ignoring which can lead to breakage of the mounts or leakage. In this article, we will discuss in detail the algorithm of actions, the necessary tool and nuances that will ensure the long service of your dispenser. Proper installation of the power cells ensures stable operation of the sensor and pump.

To begin with, it is worth clarifying that most models of Xiaomi smart dispensers, including popular versions of the 1S and earlier modifications, use standard AA batteries. However, the way they are placed and the mechanism of fixing the lid may vary depending on the year of release and the specific modification of the device.

Preparation for replacement of the elements of power

Before you start servicing the device, you need to prepare the workplace and make sure that there are proper batteries. It is critical to use only high-quality batteries from proven manufacturers, as cheap analogues can leak and spoil contacts inside the dispenser. It is recommended to purchase a set of four alkaline (alkaline) AA batteries in advance.

Make sure you have a dry cloth or paper towel on hand to wipe the case in case it gets soap or water.Wet hands or a slippery case can make it difficult to open the latches, so it is better to wipe your palms and the device beforehand. It is also worth checking whether the dispenser mechanism is blocked by a transport locker if the device is used for the first time.

⚠️ Warning: Never try to open the battery compartment while there is water or soap foam on the device's body. moisture can penetrate through microslits when the lid is opened and cause a short circuit.

If you're planning to replace batteries for the first time, it's also worth checking which parts are installed in the device now. Sometimes low-quality batteries come with a package, and replacing them with more energy-intensive ones immediately after purchase can significantly extend the battery life of the gadget, which is especially true for models with active use of a Bluetooth module.

Dismantling of the lower dispenser cover

The process of opening the battery compartment in the Xiaomi Mijia dispensers is implemented through the rotary mechanism of the bottom cover. You need to take the device with one hand by the top of the body, and the other firmly hold the lower part where the compartment is located, and you need to rotate the bottom cover counterclockwise, focusing on special pointer arrows, squeezed out on the plastic.

Usually, to fully open, you need to turn about 90 degrees or a little more until you feel the characteristic click or release of the lock. Don't make excessive efforts: if the lid does not turn, you may be twisting in the wrong direction or getting in the way of dried soap that has got into the thread. In such cases, you can slightly warm the plastic with a hairdryer (not hot air) or gently wash the thread with warm water, making sure that the electronics are protected.

Once the locks are unlocked, the bottom of the body is loosely removed downwards, allowing access to the battery compartment, and inside you'll see four compartments, vertically or horizontally, depending on the model, and it's important not to pull the sharply removed cover, because it can be connected to the sensor cable in some modifications, although in most cases the communication is purely mechanical.

It's worth noting that the dispenser is designed to minimize the risk of moisture getting inside when you replace the batteries, but it's not completely tight at this point. So try to do all the operations quickly and in a dry room. Avoid getting dust into the open compartment.

Proper installation of batteries in the compartment

Once you get access to the battery compartment, you need to remove the old power cells. Notice the polarity of the installation: inside each socket there are markings "+" and "-." The polarity must be strictly observed, otherwise the device will not turn on or, in the worst case, may fail electronics. Usually in Xiaomi dispensers, the plus contact is directed upwards (to the neck of the bottle), and the minus contact is downwards.

Insert new batteries in sequence, making sure they sit tight in their nests. If the contacts inside are oxidized or contaminated, they can be gently wiped with a dry cotton swab or a blower. Do not use liquids to clean the contacts inside the device, as residues of chemistry can damage the board.

• 🔋 Use only alkaline batteries as they provide a stable voltage for a long time.
• 🚫 Do not mix old and new batteries, as well as elements of different types (for example, salt and alkaline).
• 🔄 Make sure all four elements are installed correctly and have the same charge level.

After all four batteries are installed, the device usually gives a light signal or a sound indicating successful switching on. The indicator on the front panel may flash blue or green. If this does not happen, check again the correct polarity setting and the density of the batteries.

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The main rule of installation is strict adherence to polarity (+/-) and the use of only the same type of alkaline batteries for stable operation of the engine.

Assembly of the device and check of performance

The final step is to put the bottom cover in place, combine the guides on the lid with the grooves on the dispenser body, make sure that the rubber seal (if designed by your model) is in its groove and is not pinched anywhere, which is important for maintaining the device's moisture protection.

Turn the bottom of the case clockwise until the pointer arrow matches the closed lock mark. You should feel the stress. Don't pull the lid over too much, but don't leave it untwisted, or it may open when you fall or sloppy handle it, causing batteries to splash out.

After assembly, turn on the dispenser if it has a mechanical mode switch (usually located on the back wall).Put your palm to the sensor: the device should automatically squeeze out a portion of soap. If the dispenser is in Bluetooth mode, check the connection to the smartphone through the Mijia app to make sure that the charge level is displayed correctly.

Set up through the Mi Home app

For owners of the Xiaomi ecosystem, it will be useful to know that after replacing the batteries, you may need to re-synchronize the device with the application. Go to the Profile section or select a specific device in the list, here you can not only check the charge level, but also adjust the volume of the squeezed portion and the sensitivity of the sensor.

If the dispenser is no longer displayed on the network or the battery status is not updated, try removing the device from the application and adding it again. To do this, press the reset button (if any) or follow the on/off sequence described in the instructions for a particular model.

You can also activate child protection mode in the app, which blocks the sensor from working when you press a particular combination or through the interface. This is a useful feature if there are young children in the house who like to play with foam. → Protection regime.

⚠️ Note: When pairing again, make sure the phone is near the dispenser (no further). 1-2 Bluetooth is on, and the range of the signal at the time of setting is critical.

Regularly update the dispenser firmware through the app if the manufacturer releases new versions. Updates often include power optimization, which allows the batteries to last longer. Check for updates is done in the device card in the General Information section.

Typical problems and ways to solve them

Even with the batteries installed correctly, you can have situations where the dispenser refuses to work. One of the common causes is oxidation of the contacts. If you see white plaque on the springs or plates inside the compartment, clean them carefully. Use dry cloth or cotton swab dipped in alcohol, but be sure to let the contacts dry completely before installing new batteries.

Another problem is the use of inappropriate batteries: Some AA lithium batteries have 1.5V voltages with a built-in converter, but they may not be correctly detected by a charge controller that expects a smooth reduction in alkaline cell voltage, which can result in the indicator showing a discharge immediately after installation.

• 🧼 Pump clogging: if the motor hums but the soap doesn't go, the tube may have dried up.
• 📉 Low voltage: cheap batteries may not produce the required current at the start of the engine.
• ❄️ Temperature: in the cold, the capacity of the batteries falls, and the dispenser may stop working at a temperature below +5°C.

If none of these things worked, and the device is showing signs of life (flashing the indicator) but not pumping the soap, it might be the pump itself or the control board, and it makes sense to go to a service center or replace the pump module, if you have the right skills.

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To extend the life of the batteries, turn off the dispenser (switch at the back) if you go on vacation for a long time, this will prevent self-discharge and possible leakage of the electrolyte.