Disassembly of the mop Xiaomi Deerma: a complete guide with photos and tips

Xiaomi Deerma mops have become popular for their convenience, power and durability. But even the most reliable equipment requires maintenance: cleaning the internal mechanisms, replacing brushes or batteries. Disassembling the mop yourself is a simple task if you know the sequence of actions and have the right tools at hand. In this article, we will discuss in detail how to properly dismantle the case, remove the battery and get to the engine without risking damage to the device.

Many users are afraid to disassemble the equipment for fear of breaking fragile plastic latches or breaking the tightness. However, Deerma is designed with repairability in mind: most models (for example, Deerma). CM600 or Deerma T300) They're modular, and the key is to be careful and follow the instructions, and if you've never disassembled a machine, start by learning the mounting circuitry and getting the workspace ready.

In the article you will find:

• 🔧 Step-by-step with photos and videos (for popular models)
• 🔋 How to safely remove the battery and check its condition
• ⚙️ Diagnostics of malfunctions: when disassembly is really necessary
• 🛠️ List of tools and their analogues for home repair

Preparation for disassembly: tools and security measures

Before you start disassembling, make sure the mop is completely discharged, which minimizes the risk of short circuit when working with the battery.

• 🔨 Plastic blades (or mediators) - to disconnect latches without scratches.
• ⚒️ Cross screwdriver (usually) PH0 or PH1) — hull-rotor.
• 🧲 Magnetic mat or container – to avoid losing small details.
• 📸 Smartphone – take pictures of each stage, this will help with the reverse assembly.

If you don't have a specialised blade, you can replace it with a plastic card or even a guitar mediator, and the main thing is to avoid metal objects that can scratch the body or close contacts.

⚠️ Warning: Don't use a knife or screwdriver to separate the latches! Deerma's body plastic is fragile enough that metal can split it.

Work on a flat, well-lit surface. If you're taking a mop apart in the kitchen or in the bathroom, close the drain, small screws or springs fall and fall easily. IPX7 (Water protection) after disassembly may require replacement of sealing rubber bands - they can be ordered together with spare parts.

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If the screws are "stiff" and do not unscrew, drop on them a little WD-40 Give the liquid 5-10 minutes to absorb, then try again.

Disassembly of the body: remove the upper and lower covers

Most Deerma mop designs involve two-step disassembly: first, the top cover (where the power button is located), then the bottom with the motor and battery, starting with the top panel:

1. Turn the mop upside down. Carefully inspect the body for hidden screws under stickers or rubber plugs. CM600 and T300 Usually 2-3 screws are hidden under a decorative panel near the button.
2. Carefully place the plastic blade in the gap between the top and bottom of the body (usually closer to the back wall where the brushes are attached). Smoothly drive the blade along the seam, disengaging the latches. You will hear characteristic clicks.
3. Once all the latches are disconnected, lift the top cover. Be careful, it may have wires attached to the power button or charging indicator. Don't pull too hard to keep the contacts from tearing off!

If the lid fails, check if all screws are twisted. In some modifications (e.g. Deerma) DJ65) an additional screw can hide under a rubber leg - it must be carefully removed.

Once the top cover is removed, you'll see a control board with a button and an LED, which you can gently put aside, pre-disconnect the plume (if any), and then move to the bottom of the case, where the motor and battery are.

Disconnect the brushes from the body|

Check for hidden screws|

Prepare a container for small parts|

Take a picture of the location of the wires-->

Removal of the battery: safety rules

The battery is the most vulnerable part of the mop, and over time it loses capacity, it swells up, it stops holding charge, and replacing the battery is one of the most common reasons for disassembling the Deerma, but before you take the battery out, you need to:

• 🔌 Completely discharge the mop (before switching off).
• 🕒 Waiting 10-15 minutes after discharge will reduce the risk of residual stress.
• 🧤 Wear gloves (if possible) – Lithium batteries can be dangerous if damaged.

In most models, the battery is attached to the body by:

• Double-sided Scotch (e.g. in Deerma) CM600).
• Plastic latches (in Deerma) T300).
• Screws (rarely, but found in older versions).

To remove the battery:

1. Disconnect the power connector from the board (usually white or black) and do this carefully by pulling the plastic part of the connector, not the wires!
2. If the battery is glued, put a plastic blade on the side and slowly lift it. Don't bend the battery, it can damage the internals.
3. Check the battery case for bloating or damage. If the battery is swelling, you can't puncture or bend it, it can cause fire!

⚠️ Warning: If the battery is swollen or has signs of corrosion, do not try to charge it! Dispose of the battery at special reception points and replace it with a new one.

Replacement batteries with similar characteristics, such as Deerma, will be suitable. CM600 This is a 2200 mAh, 7.4V battery, and T300 — 2600 mAh, 7.2V. When buying, pay attention to the size and location of the contacts - they must match the original.

Diagnostics of motor and mechanical parts

If the mop doesn't rotate the brushes, it doesn't suck water up, or it makes extraneous sounds, the problem may be in the motor or the mechanical gears, and once you've removed the battery, you'll have access to:

• 🔄 Reductor - transfers rotation from the motor to the brushes.
• 💨 Fan - creates a vacuum for water absorption.
• ⚙️ Brush node - can be clogged with hair or debris.

To check the engine:

1. Disconnect the motor power connector (usually red or yellow).
2. Blow into the water suction hole - if you hear a whistle or a grin, most likely, garbage got into the fan.
3. Scroll the motor shaft with your hand. If it doesn't rotate or it's rotating with difficulty, you'll need to clean or replace it.

A common problem is wedging brushes from coiled hair or threads to clean them:

• Remove the brush block by pressing the locks on the sides.
• Wash your brushes under warm water by removing debris with a toothpick or tweezers.
• Lubricate the brush axis with silicone lubricant (do not use it) WD-40 or oil-based!).

If the motor does not show signs of life even after cleaning, check it with a tester. the resistance of the winding should be in the range of 10–50 Ohms. Lack of resistance or its too high value indicates a malfunction.

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In 80 percent of cases, the mop's death is not caused by a motor failure, but by a clogged gearbox or a worn-out battery. Always start your diagnosis with cleaning and checking the battery!

Assembly of mop after repair: step-by-step instructions

Getting the mop back together is often harder than disassembling, and the rule is to go backwards and see if you can:

• 🔌 The correct connection of connectors (they must click when connecting).
• 🔧 Tighten the screws - do not pull, so as not to tear the thread.
• 🔒 Fixing latches - they all must click when closing the case.

Step-by-step build algorithm:

1. Put the battery back in place, tape it or latch it, plug it in.
2. Secure the motor and gearbox, making sure that all wires are laid neatly and not clamped.
3. Set the top cover, starting at the button side. Press until the characteristic snap of the latches.
4. Twisting all screws, including those hidden under stickers or legs.
5. Attach the brushes and check their rotation manually - they should spin freely, without backlash.

Don't turn on the mop right away after assembly.

• Make sure that all the details are in their place.
• Make sure the case has no slits (this is important for models with protection). IPX7).
• Charge the mop for 10-15 minutes, then turn on and test at minimum power.

⚠️ Warning: If the mop doesn't turn on after assembly, check: Correct connection of the battery connector. Integrity of the fuse (if it is in your model) No short circuit (check multimeter).

If done correctly, the mop should work like new, and if problems persist, it may require more advanced diagnostics or replacement of components.

Frequent mistakes in disassembly and how to avoid them

Even experienced users sometimes make mistakes that lead to a mop breakage, and here are the most common ones and ways to prevent them:

Another common problem is the loss of screws or springs during disassembly.

• Use a magnetic mat or a section-divided part container.
• Sort screws by size – in Deerma, screws of different lengths can occur.
• If the screw fell and got lost, don't replace it with the first one you got!

If you are in doubt, it is better to contact the service center, but most users manage to successfully disassemble and repair the mop on their own, saving on repairs.

Where to buy spare parts for the Xiaomi Deerma mop

If after diagnosis it turned out that the mop requires replacement of parts, they can be purchased:

• 🌍 Xiaomi official stores (e.g. mi.com or mi-store.ru) – original spare parts, but more expensive.
• 🛒 AliExpress – big choice, low prices, but long wait for delivery.
• 🏬 Local service centers – sometimes sell used parts with a guarantee.
• 🔧 Electronics stores (for example, "Chip and Deep") - for universal components (screws, connectors).

When buying spare parts, pay attention to:

• Model mop - details from Deerma CM600 not fit for T300.
• Article – original parts are labeled, for example, DJ-CM600-001 brush-brush.
• Customer reviews – often indicate compatibility with specific models.

Average prices for popular parts (2026):

• Battery - 1200-2500 ₽.
• Brushes (set) - 500-1200 ₽.
• Motor - 2000-3500 ₽.
• Management fee - 1500–2800 ₽.

If you buy a battery, pay attention to the capacity and voltage. CM600 battery 7.4V 2200mAh, for DJ65 — 7.2V 2600mAh. Inconsistency of parameters can lead to rapid wear and tear or even fire!

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When buying brushes, choose models with silicone inserts - they better collect animal hair and hair than conventional rubber ones.

When the disassembly will not help: signs of serious breakdowns

Not all Deerma mop failures can be repaired on their own, but there are a number of symptoms that indicate serious malfunctions that require professional repair or replacement of the device:

• 🔥 The smell of burning during operation is a sign of a burned motor winding or board.
• 💧 Water leakage into the body - can cause corrosion of contacts.
• ⚡ Sparkling when charging – often associated with a power controller malfunction.
• 🔊 Heavy noise or vibration – wear of motor bearings is possible.

If you see any of these signs, don't disassemble the mop yourself, but you should go to a service center where you can have a full diagnosis, and in some cases, such as a burnt engine, it can cost more to repair than to buy a new mop.

Also, it is worth considering that Deerma models older than 3-4 years often suffer from wear of plastic gears in the gearbox. These parts are hardly sold separately, and their replacement requires soldering or turning work.

⚠️ Warning: If the mop is in the rain or is flooded with water, do not turn it on until it is completely dry (minimum 48 hours). Use silica gel or dryer in cold mode. Pattempting to turn on a wet device can cause a short circuit! FAQ: Answers to frequent questions: Can you disassemble a Deerma mop without special tools? Yes, but with reservations. Instead of plastic blades, you can use a guitar mediator or a plastic card. But you can't do without a cross screwdriver, because the screws in Deerma have a standard cruciform head, and you can also be prepared for the fact that without the blades, the risk of damage to the latches increases. How often do you clean the mop from the inside? It is recommended to carry out preventive cleaning every 3-6 months, depending on the intensity of use. If the mop is used daily to clean animal hair or in conditions of heavy dust, it is worth cleaning more often. Signs that it is time to disassemble the device: Decrease in suction power. Extraneous noise when working. Unpleasant smell (indicates mold inside). What to do if after the mop assembly does not turn on? First check: Correct connection of the battery connector. Integrity of the fuse (if you have one in your model). No short circuit (call the chain with a multimeter). If all is fine, but the mop is not rare, the manufacturer will need to find the device for the device to disassemble the device. But you can find them: YouTube (search for "Deerma [model] disassembly"), VKontakte or Telegram (e.g., "Repair Xiaomi"), forums like this. 4pda.ru If there is no circuit, take step-by-step photos during disassembly — this will help with the reverse assembly. Can I replace the battery with a more capacious one? Theoretically yes, but with the reservation: The new battery must have the same voltage (for example, a new battery must have the same voltage, 7.4V). The size of the battery must be the same, otherwise it will not fit into the case. 2200mAh before 3000mAh) You may need to modify the charging controller, otherwise the battery will not fully charge or overheat.If you are not sure about your skills, it is better to buy a battery with original parameters.