How to add soap to a disposable Xiaomi cartridge: instructions with photos and tips

Disposable cartridges for Xiaomi automatic dispensers (for example, Mijia Smart Soap Dispenser or Viomi) V3 Pro) designed to 300-500 It's a ml of liquid, but often it runs out before you can buy the original consumable, and instead of buying a new cartridge, many users prefer to refill it, which saves them up to a few years. 70% However, the manufacturer does not provide such a possibility: the covers are sealed tightly, and improper filling can lead to leaks or breakage of the dispenser.

In this guide, we will break down 3 proven ways to add soap to Xiaomi disposable cartridges (including models with a chip). RFID), We'll tell you which fluids are compatible with the system, and we'll give you safety tips, and we'll tell you how to bypass reuse protection and avoid errors. E02 (cartridge failure) on the display of the device.

What Xiaomi cartridges can be refilled?

Not all Xiaomi consumables are upholstered, but here are the key compatibility criteria:

• ✅ Models without RFID-The Mijia Soap Dispenser (1st Gen), Viomi V1 — They can be refilled without restrictions.
• ⚠️ Models with RFID: Mijia Smart Soap Dispenser 2, Viomi V3 Pro – require circumvention of protection (see section below).
• ❌ Cartridges marked "Bio" or "Eco" - their inner coating decomposes upon contact with non-original liquids.

To determine the type of cartridge you have, examine the bottom of it:

• 🔍 If there is a circular plastic disc with a metal ring, it is RFID-chip.
• 📦 If the bottom is smooth with the inscription MIJIA or VIOMI — chipless.

What liquid can be poured into the cartridge?

Manufacturer recommends using only original Xiaomi liquids (articles: DJC01ZM, DJC02ZM), But in practice, analogues are also suitable. The main thing is to follow the 4 rules:

1. Viscosity: The liquid should be gel-like (like the original) or slightly thinner. Watery solutions flow through the valve.
2. Temperature: not above 30°C when refueling - hot liquid deforms plastic.

Here are the proven analogues of the original soap:

⚠️ Note: Do not use liquids with chlorine (such as Domestos) or hydrogen peroxide – they destroy the plastic cartridge for a long time. 2-3 filling-up.

Method 1: Filling the cartridge without RFID (simple)

This method is suitable for Mijia Soap Dispenser models (1st Gen) and Viomi V1. You'll need it:

• 🔪 Sharp knife or scalpel
• 🧴 Syringe on 20-50 squirt
• 🧼 Refilling fluid (see table above)
• 🔥 Lighter or soldering iron (for sealing)

Step-by-step:

1. Cut the lid: Carefully cut the top of the cartridge at the seam with a knife. Don't puncture - this will damage the inner membrane.
2. Removal of residues: Wash the cartridge with warm water (no higher) 40°C) and dry with a hair dryer 2-3 minute.
3. Gasing: Put the liquid in the syringe, remove the needle and pour through the hole. Fill up to 80% - leave room for air.
4. Seal: Warm up the edges of the lid with a lighter (don't melt!) and press them against each other. Wrap them with tape for safety.

Critical: If after refueling the dispenser issues an error E01 (low fluid level, so you pressed the valve when you pressed it.

Method 2: Bypass RFID-chips (for smart dispensers)

Mijia Smart Soap Dispenser 2 and Viomi V3 Pro equipped RFID-There are 2 working methods to get around the protection:

Method A: Cloning a chip (for advanced users)

It will require:

• 📱 Smartphone with NFC (For example, Xiaomi 13 Pro)
• 💳 Annex NFC Tools (Android) or NFC TagReader (iOS)
• 🪪 Empty. RFID-sticker (buy on AliExpress, article: 1005004964321458)

Algorithm of action:

1. Count the original chip through the app (save the dump).
2. Write the data down on an empty sticker.
3. Stick the sticker to the bottom of the tucked cartridge.

Method B: Software deception (without soldering iron)

If it's hard to clone a chip, you can turn off the check. RFID smack-drive:

1. Download the patch for Mi Home (version 6.0.100)+).
2. Connect the dispenser to the Mi Home app.
3. In the device menu, select Settings → Developer mode → Turn off the cartridge check.

⚠️ Attention: After disconnection RFID The dispenser will issue a warning "Non-original cartridge" at each use, but will work normally).

Method 3: Alternative valve refueling (without opening)

This is a method that works for all models, but it requires care, and the idea is to pour the liquid through a return valve, which is located at the bottom of the cartridge.

Tools:

• 💉 Syringe with a thin needle (diameter) 0.5-0.7 mm)
• 🧴 Liquid with a viscosity not higher than 1500 cPz (for example, Ecover Zero)
• 🧲 Magnet (for valve fixation)

Step-by-step:

1. Remove the cartridge from the dispenser and rinse it under warm water (holding the hole down).
2. Find a small recess at the bottom with a rubber plug - this is a return valve.
3. Apply the magnet to the valve to lock it in the open position.
4. Slowly inject the liquid with a syringe, speed is no more than 5 ml per minute, otherwise bubbles form.
5. After refueling, hold the cartridge vertically for 10 minutes so that the liquid is distributed.

💡

If the liquid does not enter the syringe, heat it to 35.°C is going to reduce the viscosity. But don't overheat: at 40.°C+ soap may curl up.

Frequent Mistakes and How to Avoid Them

Even with the right fueling, users are facing problems. TOP-5 mistakes and their solutions:

If after filling the dispenser starts to hum or vibrate, it means that the liquid has entered the pump mechanism.

1. Remove the cartridge.
2. Turn the dispenser over and shake it.
3. Wipe the contacts with a cotton swab soaked in alcohol.

💡

90% of the problems with refilled cartridges are due to two factors: improper viscosity of the liquid or leakproofness. Always test the soap for compatibility before filling it up!

How to prolong the life of the cartridge: 5 life hacks

Average service life of the original cartridge — 3-4 But with these tips, you'll be able to increase it to 8-10 cycle:

• 🧼 Valve cleaning: Once a month, wash the return valve with vinegar solution (1:10 with water.
• 🌡️ Storage: Do not leave the cartridge in direct sunlight – UV radiation makes plastic brittle.
• 🔄 Alternating fluids: After each 3rd use, fill the cartridge with citric acid water (1 tsp per 200 ml) for disinfection.
• 🛠️ Seal: Instead of scotch, use heat-glue (for example, UHU Hot Melt – it keeps the leaks longer.
• 📱 Firmware update: Devices on firmware 1.3.7 and below are less sensitive to "unoriginal" cartridges. Do not update the dispenser unless necessary.

If the cartridge is still in disrepair, do not rush to throw it away. The plastic case can be used as a dispenser for shampoo in the bathroom - just drill a hole in the lid and insert a pump from the old bottle.

FAQ: Answers to Frequent Questions