Replacement of knives on Xiaomi electric razor: instructions with photos and tips for choosing

Why it is important to change knives on Xiaomi electric razor in time

Xiaomi electric shavers are a popular choice among users who value a balance of value and quality, but even the most reliable models, such as the Mi Electric Shaver, are popular among users who value a balance of value. S500 Or the Redmi Beard Trimmer. 1C, The main consumable is knives (blades) that eventually become blunt, covered with microcracks and no longer provide clean shaving. If you notice that the razor has started to pull hairs, leaves irritation or requires more passages to remove bristles - this is a sure signal to replace knives.

The manufacturer recommends that the blades be updated every 12 to 18 months for daily use, but the actual duration depends on the stiffness of the hairs, the frequency of shaving and the care of the device. T300 They say that if you clean and lubricate your knives properly, they last up to 2 years, and in this article, we'll look at how to change blades on popular models, what tools you'll need, and how to avoid common mistakes.

Before you start, check out your razor model, the replacement process may be different. For example, Mi Electric Shaver 2 has knives attached to the latches, and Redmi Beard Trimmer uses a threaded connection. If you are not sure about the model, check it out on the device body or in the Mi Home app (if the razor supports connection).

What knives are suitable for your Xiaomi model

Not all blades are universal - the use of inappropriate knives can damage the razor mechanism or worsen the quality of the shaving. The manufacturer produces original kits for each series, but there are also compatible counterparts from third-party brands (for example, Remington or Philips).

Check compatibility on the manufacturer’s website or product card before buying. Pay attention to the blade material: Xiaomi’s original knives are often made of Japanese titanium-coated steel, prolonging their lifespan. Cheap counterparts can quickly become dull or rust when in contact with water.

Where to buy the original knives:

• 🛒 Xiaomi Store (minimum risk of counterfeiting)
• 🌍 AliExpress (look for sellers with a rating above 98% and reviews in Russian)
• 🏬 The chain of stores "Svyaznoy" or "M. Video" (sometimes available)
• 🔧 Xiaomi Service Centers (can be ordered with delivery)

Preparing for replacement: security tools and measures

Replacing knives with a Xiaomi electric shaver is a simple procedure, but it requires care.

• 🔧 New Knives (Check Compatibility)
• 🧴 Alcohol wipes or cotton-coat discs with isopropyl alcohol (for cleaning)
• 🔍 Loop or flashlight (for inspection of small details)
• 🛠️ Plastic blade or mediator (for careful snapping of latches)
• 💧 Razor lubricant (e.g. Xiaomi Shaver Lubricant)

Warnings before commencing work:

⚠️ Warning: Never disassemble a razor that is connected to the mains. Even if it is off, there may be a charge in the capacitors).

⚠️ Warning: Do not use metal tools (screwdrivers, knives) to remove knives - this can scratch the body or damage plastic latches. If the mounting does not lend itself, do not force: you may have missed the hold.

Before replacing, it is recommended to completely discharge and charge the battery - this will reset possible engine calibration errors that may occur after installing new blades. It will also be useful to take a photo of the internal device of the razor (if you have to remove the lid) - this will help to properly collect it back.

Disconnect the razor from the network and remove the battery (if possible)

Clean the body from hairs and dust with an alcohol solution

Prepare a new blade and lubricant

Take a picture of the original position of the parts (optional)

Working on a flat surface with good lighting-->

Step-by-step: how to remove old knives

The process of dismantling the blades depends on the model of the razor. Consider the two most common types of attachment: latches (as in the Mi Electric Shaver). S500) and threaded joint (as in the Redmi Beard Trimmer).

For latched models (e.g, S500, T300):

1. Turn the razor upside down. Press the lock button (usually located on the side) and pull the razor head up and on yourself.
2. If the head is not removed, check for hidden locks, sometimes you need to press them simultaneously (for example, from both sides).
3. Once you remove the head, you'll see a metal plate with knives, and you'll gently slap it with a plastic blade on the edges and take it off.
4. There are springs or silicone shock absorbers under the plate - don't lose them!

For models with threaded mounting (for example, Redmi Beard Trimmer) 1C):

1. Hold the razor body with one hand and turn the head counterclockwise with the other (when viewed from above).
2. If the thread fails, drop a little alcohol on the connection or WD-40, Wait 5 minutes and try again.
3. After removing the head, unscrew the screw (if any) in the center of the knife unit and carefully remove the blades.

In some models (for example, the Mi Electric Shaver 2), knives are attached to magnets, in which case you just pull the blade upwards, it will separate from the base without effort, the main thing is not to lose the magnetic holders during assembly.

Installation of new knives and assembly of razors

Before installing new blades, thoroughly clean all contact surfaces of dust, hairs and lubricant residues. Use alcohol wipes or a cotton swab soaked in isopropyl alcohol.

• 🔹 Gaps and notches on the head body
• 🔹 Engine contact areas (if bare)
• 🔹 Springs or shock absorbers (they must be clean and dry)

Follow the instructions for your model:

For the latches (S500, T300):

1. Install new knives on the metal plate, combining the holes.
2. Place the plate back in the razor head, making sure the springs or shock absorbers are in their places.
3. Press the head before clicking - the latches should be fixed.

For the Redmi Beard Trimmer:

1. Place new knives in the head and fix them with a central screw (if any).
2. Apply a little lubricant (for example, silicone).
3. Press the head against the body and turn clockwise to the point.

After assembly, check:

• 🔄 The blades should rotate smoothly, without jamming.
• 🔊 When the razor is turned on, there should be no extraneous noises (squeaking, knocking).
• 💡 The charging indicator (if any) should burn stably, without blinking.

💡

If the blades are replaced and the razor vibrates more than normal, check the balance of the blades, which may be asymmetrical, remove the head and repeat the installation, making sure that all the elements fit tightly.

Frequent Mistakes and How to Avoid Them

Even with the seemingly simple process, many users make mistakes that cause the razor to break or deteriorate, and the most common ones are:

1. Use of non-original knives of poor quality

Cheap analogues often have inaccurate geometry, resulting in:

• 🔴 Increased vibration and noise during operation
• 🔴 Rapid dulling of the blades (after 2-3 months)
• 🔴 Damage to plastic parts of the head

2. Incorrect assembly after replacement

Typical consequences:

• 🔴 The head of the razor is not fixed (forgot to click the locks)
• 🔴 Blades do not rotate (plus/minus contacts are mixed up)
• 🔴 Razor not turned on (incorrectly installed battery)

3. Ignoring lubrication

Many people forget to apply the lubricant to new knives, which leads to:

• 🔴 Accelerated wear of blades and engine
• 🔴 Increased heating of the razor during operation
• 🔴 The appearance of rust (if the razor is used in wet conditions)

How to avoid mistakes:

• 📌 Buy knives only from trusted sellers (see compatibility table above).
• 📌 Follow the disassembly instructions strictly for your model.
• 📌 After assembly, turn on the razor for 10-15 seconds without loading, so that the lubricant is evenly distributed.

1. Correct installation of blades (they must be directed with a cutting edge upwards).

2. lubrication on contact surfaces.

3. The state of the grid (it may be time to replace it too).-->

Razor care after knife replacement

New blades require special care in the first weeks of use, and follow these guidelines to extend their lifespan:

1. Cleaning after each use

• 🧼 For dry models: shake off the hairs with a brush (comprised) and blow the head with compressed air (for example, a dryer in cold mode).
• 💦 For waterproof models: rinse the head under running water, then dry.

2. Lubricant

• 🛢️ Apply 1-2 drops of special lubricant (for example, Xiaomi Shaver Oil) to the blades every 5-7 uses.
• 🚫 Do not use sunflower oil or WD-40 — They leave a sticky coating.

3. Storage

• 🏠 Keep your razor in a dry place, away from direct sunlight.
• 🔋 If you don’t use a razor for longer than a week, remove the battery (if possible) or store it with a charge of 40-60%.

Sharpening (optional)

If the blades are too blunt, they can be sharpened with a spray (like the Remington Sharpener) or taken to the workshop, but for most Xiaomi models, no sharpening is provided – it is easier to buy new knives.

Compliance with these rules will help your blades last 30-50% longer. T300 With proper care, the original knives can last up to 24 months of active use.

FAQ: Answers to popular questions