Why might you need to disassemble Xiaomi’s electric shaver?
Xiaomi electric shavers are among the most popular on the market, thanks to a combination of price, quality and functionality. 1S, 2S or T500 They last for years, but even they require periodic maintenance, and over time, movable knives become dull, moisture or dust gets in, and the battery loses capacity, and in such cases, disassembly of the device becomes necessary, whether for deep cleaning, blade replacement or electronics repair.
But Xiaomi’s razor needs to be taken with caution: wrong actions can damage the plastic case, break wires, or even short circuit. In this article, we’ll take a closer look at the disassembly process, list the tools you need, and point out the critical points that are often overlooked, and you’ll also learn how to avoid the common mistakes that cause many users to break their devices.
Before you start, make sure that your model does require disassembly, for example, if the razor is just not shaving well, it may be enough to clean the knives of the ultrasonic bath or replace the net, and if the battery runs out in 5 minutes, you can not do without opening.
What Xiaomi models can be disassembled independently?
Not all Xiaomi electric shavers are equally easy to understand, here is a list of models for which this instruction will suit, taking into account their design features:
- 🔹 Mi Electric Shaver 1S — It's a classic model with a removable head and two movable knives, and it's mounted on 4 hidden latches.
- 🔹 Mi Electric Shaver 2/2S — It's an improved version with a stronger body, but a similar mounting system.
- 🔹 Xiaomi T500 — premium model with titanium-coated knives, the dismantling complicated by additional sealing.
- 🔹 Xiaomi T300 — It's a budget version with a simplified design, suitable for beginners.
- 🔹 Xiaomi Mijia 3D Floating Shaver is a model with floating knives. It requires care when removing the top cover.
Important: Xiaomi Soocare models (e.g. Soocare) S1) They have a different type of attachment, and they don't fit that instruction, and their body is often glued together rather than assembled on latches.
If your razor is not on this list, check its design on the official Xiaomi website or look for video demos on YouTube. 4D You will need a special key to unscrew the bottom cover.
Preparation for disassembly: tools and security measures
Before you start a screwdriver, prepare everything you need, and without the right tools, you risk damaging the body or the electronics, and here's the minimum set you'll need:
- 🔧 Plastic blades (2-3 - to separate the latches of the shell. Metal screwdrivers can leave scratches.
- 🔧 Cross screwdriver (PH0 or PH00) — screw-off.
- 🔧 Tweezers – to extract small parts, such as springs or contacts.
- 🔧 Multimeter – to check the battery voltage (optional, but useful).
- 🔧 Silicone mat – so as not to lose small details and not scratch the table.
- 🔧 Isopropyl alcohol (70%+) — Cleaning contacts and fees.
Critically, before disassembling, completely discharge the razor battery (up to 0%) and leave it for 24 hours, which minimizes the risk of short circuits in case of accidental closure of contacts.
⚠️ Note: If your Xiaomi razor has been in contact with water (for example, after washing under the tap), do not disassemble it immediately.Let the device dry for at least 48 hours in rice or silica gel - moisture inside can cause contact corrosion.
Also, prepare the place for disassembly: it should be well lit (better use a desk lamp) and without drafts, so that small details do not fly away. If you are filming the process on video, fix your smartphone on a tripod, so it is easier to fix each step.
☑️ Checklist before disassembly
Step-by-step: how to disassemble the body of the Xiaomi electric razor
Now, to the process itself, most Xiaomi models are disassembled using a similar algorithm, but there are nuances. We'll look at the universal method, and we'll show the specifics for specific models separately.
Step 1: Remove the upper head with knives
1. Press the lock button on the head (usually located on the side or bottom) and pull it up. If the head does not respond, do not apply force - it may be blocked due to the hair entering the mechanism.
2 If the head is not removed, try to sway it slightly from side to side, while pulling up. T500 and 2S You may need to press two latches at the same time.
3. After removing the head, clean it of hair and dust, you can use a soft brush or compressed air (canister). Do not use water unless you are sure of leakage!
Step 2: Separation of the hull
1. Turn the razor over and find the seam between the top and bottom of the body, insert the plastic blade into the slot, and carefully guide it along the perimeter, disengaging the latches. Start from the side opposite to the power button.
2.In the Mi Electric Shaver models 1S and T300 The body is held on 4 latches. T500 There could be 6. If the body doesn't respond, don't push harder, make sure all the latches are snapped.
3. Once you disconnect the top, you'll see an internal board with a battery. Don't pull the wires -- they can be soldered to the board!
Step 3: Removing the battery and board
1. The battery in Xiaomi models is usually glued to the body with double-sided tape. Push it with a plastic blade and carefully separate it. Do not use metal tools - risk puncture of the battery!
2. Disconnect the plume that connects the board to the power button. In some models, it is attached with a connector, in others, it is soldered. If you are not sure, take a picture of the location of the wires before disconnecting.
3. The fee is usually fixed on 1-2 Unscrew them and remove the board. Be careful with the motor contacts, they're fragile.
At this point, you'll have access to all the internal components, and if the purpose of the disassembly is to replace the battery, move on to the next section, and if you want to clean the mechanism, remove the engine and knives (more on that below).
What to do if the body does not separate?
Battery Replacement: Battery Selection and Installation
The battery is the most vulnerable part of the electric shaver. Over time, its capacity drops and the device stops holding the charge. Xiaomi models usually have lithium-ion batteries of 10440 or 10500 voltage format. 3.7V. Here's how to replace them:
How to choose a new battery?
Original batteries for Xiaomi is difficult to find, but suitable analogues with such parameters:
| Model razor | Type of battery | Capacity (mAh) | Dimensions (mm) | Example of analogue |
|---|---|---|---|---|
| Mi Electric Shaver 1S | Li-ion 10440 | 350–500 | 10×44 | UltraFire 10440 |
| Mi Electric Shaver 2/2S | Li-ion 10500 | 600–800 | 10×50 | Efest IMR10500 |
| Xiaomi T500 | Li-ion 14500 | 800–1000 | 14×50 | Nitecore NL1465 |
| Xiaomi T300 | Li-ion 10440 | 350–500 | 10×44 | TrustFire 10440 |
Before buying, check the polarity of contacts on the old battery and compare it to the new one. In some Xiaomi models, the plus and minus are arranged outside the box!
Replacement
- Unplug the old battery from the board or disconnect the connector (depending on the model).
- Clean the contacts on the board with isopropyl alcohol.
- Softer the new battery with polarity. If you use a connector, just plug it in.
- Secure the battery on double-sided tape (you can use original or new).
- Check the voltage on the contacts with a multimeter - it should be within 3.7–4.2V.
⚠️ Attention: if the board is overheated during soldering, the contact of the motor may go away or the control chip may burn. Use a soldering iron with a power of no more than 30 W and work quickly, without staying in one place longer than 2-3 seconds.
After replacing the battery, collect the razor in reverse order and charge it fully before first use. If the device does not turn on, check the soldering quality and integrity of the plumes.
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If the razor is unstable after replacing the battery (spontaneously shuts down), try calibrating the battery: discharge it to zero, then charge it to 100% without interruption. Repeat the process 2-3 times.
Cleaning and lubrication of the mechanism: how to return the razor to its former sharpness
Over time, dust, microscopic hairs and skin particles enter the razor mechanism, which causes knives to slow down, make noise and reduce the quality of the shaving, and cleansing the mechanism can return the device to its original performance.
Cleaning of moving knives
1. Remove the top head (as described above) and remove the knives. Most Xiaomi models have them mounted on small latches or screws.
2. Wash the knives and nets in warm soapy water, then dry with compressed air. Do not use aggressive detergents - they can damage the coating.
3. To remove persistent contaminants, use an ultrasonic bath with a solution of isopropyl alcohol (1 part alcohol to 3 parts water).
Lubrication of the mechanism
After cleaning, the knives and moving parts of the mechanism need to be lubricated.
- 🛢️ Silicone lubricant (e.g, WD-40 Specialist Silicone – leaves no traces or spoils plastic.
- 🛢️ Specialty oil for electric shavers (e.g. Remington Lubricating Oil).
- 🛢️ Mineral oil (in extreme cases) - but it must be applied in a very thin layer.
Apply 1-2 drops of lubrication to:
- 🔄 The axis of knives.
- 🔄 Head movable joints.
- 🔄 gear gears (if available).
Excess lubrication can lead to hair sticking, so after applying remove the excess with a napkin.
Engine cleansing
If the razor is making more noise than usual, the problem may be in the engine.
- Remove the motor from the body (it is attached to 1-2 screws).
- Remove dust from the shaft and brushes using a brush or compressed air.
- Check the integrity of the brushes – if they are erased to the base, the motor must be replaced.
- Apply a drop of engine oil to the shaft (not on the brushes!).
⚠️ Warning: Do not use silicone or vegetable oils to lubricate the engine, as they cannot withstand high temperatures and can cause jamming!
After cleaning and lubricating, collect the razor and check its operation, the knives should move smoothly, without jerking or extraneous sounds, if the problem remains, the gears of the gearbox may be worn out, in which case a replacement mechanism will be required.
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Regular cleaning and lubrication of the mechanism prolongs the life of the razor by 30-50%. It is enough to carry out the procedure every 6 months, even if the device is working normally.
Common Mistakes in Disassembly and How to Avoid Them
Even experienced users sometimes make mistakes that lead to a razor breakage, and here are the most common ones and ways to prevent them:
- The pressure on the body is too high, the plastic latches are fragile, and if you push too hard, they break, so you use plastic blades and heat the seam with a hair dryer.
- Loss of small parts. Springs, cogs and washers are easily lost. Solution: work on a silicone mat and take pictures of each stage.
- Short circuit when checking the battery, touching the plus and minus with a metal tool leads to sparking. Solution: discharge the battery before disassembling and use dielectric blades.
- Wrong assembly. If you confuse the order of the parts, the razor might not turn on. Solution: make a video or take a step-by-step photo.
- Use of inappropriate lubricant: vegetable oil or WD-40 (The solution is to only buy specialized lubricants.
Another common mistake is ignoring the tightness. T500 and 2S There are rubber seals that can't be damaged. If the razor doesn't turn on after assembly, check:
- 🔌 Integrity of plumes (especially near the switching button).
- 🔌 Battery soldering quality.
- 🔌 The correct installation of knives – they must move freely.
If the razor is running after disassembly but discharges quickly, the problem may be the charge controller, which may require replacement or repair of the board (if you have soldering skills). SMD-component).
When disassembly will not help: signs of malfunctions requiring professional repair
Not all breakdowns can be repaired on your own, but here are signs that your Xiaomi razor needs a service center:
- 🚨 The razor doesn't turn on even after the battery is replaced, possible causes: the control board burned, the plume broke, or the engine malfunctioned.
- 🚨 Knives spin in jerks or stop, which could indicate wear on gear gears or engine failure.
- 🚨 It smelled like a burn, probably the engine winding or the capacitors on the board.
- 🚨 The body is deformed or cracked. Self-repairing plastic rarely gives a good result - it is better to consult a master.
- 🚨 The razor is being electrocuted, it's a sign of a breakdown in the insulation of a motor or board, and it's dangerous to use such a device!
If you're facing one of these problems, evaluate your skills. For example, replacing gear gears requires fine fitting, and repairing the board requires experience with the soldering station. In most cases, it's cheaper and safer to give the razor to the service, especially if it's on warranties.
The cost of repairs in official Xiaomi service centers varies:
| Type of repair | Cost (rupe) | Date(s) |
|---|---|---|
| Battery replacement | 800–1500 | 1–2 |
| Replacement of the engine | 1500–2500 | 3–5 |
| Repair of fees | 2000–4000 | 5–7 |
| Replacement of gearbox | 1200–2000 | 2–3 |
Before you take the razor to the service, call and check if they work with your model. Some workshops refuse to repair Xiaomi due to the difficulty of finding parts.