Xiaomi chargers are some of the most counterfeited accessories on the market. According to Counterpoint Research, up to 40% of charges sold under the Mi or Redmi brand are counterfeit. Using low-quality copies can not only slow charging, but also overheat the battery, short circuit or even fire. In this article, we will examine how to distinguish the original Xiaomi charger from a fake by 7 key features – from visual inspection to checking electrical parameters.
The thing about counterfeits is that they copy little things like packaging, fonts on the case, and sometimes serial numbers. But there are parts that counterfeiters miss or play back with errors. We tested 12 chargers (including the Mi Charge Turbo 33W, Redmi Note 11 Pro 67W and the standard 18W) and found universal authenticity markers. You don't need special devices — most of the checks can be done with a smartphone and a magnifier.
1. Packaging check: what should alert
Xiaomi's original chargers come in dense cardboard boxes with matte or slightly glossy surfaces. Counterfeits often have dull colors, blurry fonts or inaccurate logo shades.
- 📦 The Mi or Redmi logo: it's sharp, flat edges, no blurs on the original. Counterfeiting often has a color shift (e.g., orange instead of pure yellow on Redmi).
- 🔍 Barcode and serial number: the original box has a laser-printed barcode that doesn't wear off when rubbed.
- 📏 Box sizes: original packages have strictly standard dimensions. 33W comes in a box-size 95×55×28 mm. Deviation more than by 2 Mmm, reason to doubt.
Another key point is that it has multiple language inscriptions: Xiaomi’s original global chargers have text in 5-7 languages (English, Chinese, Russian, Spanish, etc.) and counterfeits are often limited to 2-3 languages or contain grammatical errors, such as “Fast Charging” or “Quick Charge” (which is not true for Xiaomi devices).
⚠️ Note: Some fakes even copy holograms on the package, and you can check their authenticity using the Xiaomi Authenticity Check app (available for Android), scanning them. QR-The original code will redirect you to the official website, the fake code will redirect you to the phishing page or will give you an error.
2. Visual inspection of the case: 5 details that give a fake
Even if the packaging looks perfect, check out the charger itself. Xiaomi's original models have a number of distinctive features:
- Case material: The originals are made of matte plastic with a rough (slightly rough) texture. The fakes are often smooth, slippery or, conversely, too rough to the touch.
- Weight: The original charging Mi 33W weighs 48-50 g, and Redmi 18W – 32-34 g counterfeiting is usually lighter by 10-20% due to the use of cheap components.
- Color and shade: The original chargers are uniformly white (for most models) without yellow.
Note the markings on the case. The original charger has laser-engraved text that doesn't wear off when rubbed with alcohol. For fakes, text can be convex (as if pasted) or easily erased. For example, the original Mi 67W charger has "MDY-12-ED" engraved clearly, and for fakes, the letters can be blurry or uneven.
| Sign. | Original | Fake. |
|---|---|---|
| Texture of the case | Matte, slightly rough. | Smooth or too rough |
| Weight (e.g. Mi 33W) | 48-50 g | 35-40 g |
| USB-C color plug | Metallic with matte finish | Brilliant or scratched |
| Shaking sound | No extraneous sounds. | Heard rattle (bad assembly) |
💡
To test build quality, lightly squeeze the charger body from the sides. The original won't bend or creak. Counterfeits often have a backlash between the halves of the case.
3. Checking the USB plug: why it's critical
The USB-C or USB-A plug is one of the most vulnerable parts of the charger, and counterfeits often use cheap connectors that quickly squirm or overheat.
- 🔌 Metal quality: the original plug has a matte metal finish without scratches.Fakes often shine like chrome, or have traces of corrosion already "out of the box".
- 🔍 Contact soldering: the original has contacts inside the connector USB-C They're symmetrical and have no solder infusions, and fakes often show tin drops or rough edges.
- 📏 Wire thickness: If charging is complete with cable, the original wire has a diameter of 3.5-4 mm (for models) 30W+). Counterfeiters use thin wires (2-2.5 mm) that warm up when charged.
Critical test: connect the charger to your smartphone and sway the plug slightly to the sides. The original connector will not "backlash" and cause charging interruptions. Counterfeits often lose contact with the slightest movement.
⚠️ WARNING: If a smartphone gives a “Slow Charging” or “Unknown Charger” notification when connecting a charger, this is a sure sign of a fake. Xiaomi’s original charging supports Quick Charge protocols 3.0/4+, PD 3.0 and MI FCP, which are automatically recognized by the phone.
4. Multimeter Test: How to Measure Real Power
If you have access to a multimeter or USB-tester (e.g. tester, USB Doctor or ChargerLab Power-Z KM002C), You can measure the actual electrical parameters of the charger, and that's the most reliable way to detect a fake, because counterfeit devices rarely give out the declared power.
To verify:
- Connect the multimeter in voltage measurement mode (DC 20V) to the +5V and GND contacts on the USB plug (you can use a disassembled cable or adapter for this).
- Turn the charger on the network. The original device should show 5.0-5.2 V without load and 4.75-5.0 V under load (when connecting the phone).
- To check the current, connect the phone and measure the current in DC 2A mode. For example, charging the Mi 33W should give 3.0-3.3 A at a voltage of 10–11 V in fast charging mode.
For example, instead of the 18W (9V/2A) they claim, they give 10W (5V/2A), which is 2 times slower. Also note the voltage pulsations: original charges have minimal (<50 mV), and for counterfeits can reach 200-300 mV, which is harmful to the battery.
How to measure the pulsation of voltage without an oscilloscope?
5. Checking through applications: what programs will help
If you don't have a multimeter, you can use specialized Android apps that won't give you the accuracy of hardware tests, but they can help you spot rough fakes.
- 📱 AccuBattery: Shows real-world charging speed in mA and voltage.Original charging Xiaomi 33W Must deliver 2,500-3300 mA on compatible models (e.g. Redmi) K40).
- 🔌 USB Meter: displays voltage, current and power in real time. Counterfeiting often shows understated values (for example, for example, 5V/1.5A instead 9V/2A).
- 🔍 Xiaomi Authenticity Check: Scanning QR-code on the charger body and checks it in the Xiaomi database. Works only with new models (2020 and later).
Important: Apps may show inaccurate data if the phone is limited by charging current due to overheating or battery wear. For objectivity, test on a cold smartphone (battery temperature <30°C) and with fast charging on.
Charging connected to the original cable|Battery temperature below 30°C|Quick charging mode is enabled in the settings|The charging speed is the stated (for example, 25W Mi 11)-->
Serial number and online verification: Does this method work?
Each original Xiaomi charger has a unique serial number that can be checked on the official website.
- 🔢 Where to look for the serial number: on the charger case (usually on the underside) or on the box. Format: 12-16 characters (letters and numbers).
- 🌐 How to check: Go to the site mi.com/global/verify. Type in the serial number and the CAPTCHA. If the device is original, the system will show the model and the date of production.
Limitations of the method:
- Xiaomi does not support checking chargers older than 2019.
- Some fakes copy real serial numbers, so a positive result does not guarantee authenticity.
- Chargers purchased in China (local market versions) may not be checked through the global service.