How to remove the speed limiter on the Xiaomi electric scooter: all the ways and consequences

Xiaomi scooters are some of the most popular vehicles in the city, but factory speed limits (usually 20-25 km/h) often disappoint owners. Removing the limiter seems like an easy solution to increase the dynamics, but this process requires an understanding of the technical nuances and consequences (M365, Pro 2, 3 Lite, 4 Pro) overclocking methods differ - from firmware to hardware modifications of the controller.

It is important to consider that the manufacturer sets restrictions for a reason: it is associated with safety, legislative norms (in Russia and the EU, electric scooters are equated to bicycles at speeds up to 25 km / h) and battery life. Exceeding factory limits can lead to accelerated engine wear, overheating of the controller and reducing the mileage on one charge to 30%. In this article, we will analyze all the current ways to remove restrictions, their pros, cons and legal alternatives for those who are not ready to take risks.

Why Xiaomi is limiting speed: technical and legal reasons

The factory restrictions on Xiaomi scooters are the result of a compromise between five key factors:

• 📜 In most countries (including Russia), electric scooters with a maximum speed of over 25 km / h are equated to mopeds, which requires registration, insurance and rights of the category "M».
• 🔋 Battery resource: High speed increases the load on the battery, reducing its life. For example, when accelerating to 35 km / h, the battery capacity of the Xiaomi Pro 2 drops 20-25% faster.
• ⚙️ Component reliability: Engine, controller and brake system are designed for specific loads, exceeding speed leads to overheating of the motor windings and risk of brake failure.
• 🛡️ Safety of the user: At speeds above 25 km/h, the risk of falling injuries increases dramatically, especially on rough roads.
• 🔄 Warranty obligations: Any interference with the firmware or hardware will void the Xiaomi warranty.

Interestingly, in some countries (like the United States) the limits are higher, up to 32 km/h, but this is due to local regulations. The manufacturer could technically allow for higher speeds, but then the scooters would fall into a different category of vehicles, which would complicate their sale and operation.

⚠️ Note: In Russia according to the Government Decree №1734 from 2022, electric scooters with a maximum speed of over 25 km / h require registration in the traffic police. Exceeding this threshold can entail a fine of up to 2,500 rubles (Article 12.29 of the administrative code).

Methods of removing the speed limiter: comparison of methods

There are three main approaches to overclocking the Xiaomi electric scooter:

1. Software (firmware) - changing parameters through special applications or custom firmware.
2. Hardware (controller modification) - soldering resistors or replacing a chip.
3. Mechanical (replacement of wheels / gears) - an increase in the diameter of the wheels or a change in the gear ratio.

The most popular method among users is software, because it does not require disassembly of the scooter, but it is also the most unstable: after updating the official software, all changes can be reset, hardware modifications give a more predictable result, but require skills in working with a soldering iron and understanding of circuits.

Step-by-step: Removing the restriction through the DownG app

DownG app (available for Android) is one of the easiest ways to unlock speed on Xiaomi scooters M365, Pro, Essential and 1S. It works over Bluetooth, does not require root rights and is suitable for beginners. Important: before you start, check the firmware version of the scooter - some new versions (for example, 1.5.2).+ on Pro 2) may block such changes.

DownG Download from the official website (not from the Play Market)|

Charge the scooter at least 50%|

Connect to the Bluetooth module of the scooter|

Turn off the Internet on your phone (to avoid auto updates)|

Backup current settings in Mi Home-->

Instructions:

1. Install and open DownG. When you first start up, the app will request location access and Bluetooth — allow.
2. Turn on the scooter and wait until it appears in the list of devices in DownG. Press Connect.
3. Go to the Speed Limit section (or Speed Limit in Russian) and see the current limit (usually the limit). 20 km/h or 25 km/h).
4. Select a new value from the proposed (for example, 30 km/h For Xiaomi Pro or No Limit. 2 maximum-safety — 32 km/h.
5. Press Apply and confirm the change. The scooter will reboot.

After applying the changes, check the speed with the help of GPS-Note that the actual speed can differ from the set by 5-10% due to air resistance, rider weight and road condition.

⚠️ Attention: Scooters with firmware 1.7.0+ (For example, Xiaomi 4 Pro DownG may not work, in which case you will need to roll back the old version of the software through ScooterHacking Utility, which is risky for beginners.

Hardware modifications: soldering resistors and replacement of the controller

For those who are willing to go beyond software methods, there is a possibility of physical interference with the controller circuitry. M365, The Pro and Pro 2, but they require electronics skills, and the idea is to change the resistance on the board so that the controller thinks that the speed is lower than the real speed.

Tools required:

• 🔧 soldering iron (power 30-40 W) with a thin sting.
• 🕵️ Multimeter for testing resistance.
• 🔄 Resistors with a nominal value of 10–22 kΩ (the exact value depends on the model).
• 🧲 Screwdriver for disassembling the body.

Algorithm of action:

1. Disassemble the scooter body by unscrewing 4 screws under your feet and 2 under the steering wheel. Carefully remove the plastic cover.
2. Find the controller (usually a black box of wires attached to the frame) and disconnect the battery connectors!
3. On the controller board, find the resistor responsible for the speed limit (on the M365 It's usually R17 or R22 chipboard STM32).
4. Dry out the standard resistor and replace it with a new one with a high resistance (for example, 22 k Ohms instead of 10 k Ohms).
5. Check with a multimeter that there is no short circuit, and assemble a scooter.

This method allows you to accelerate the scooter to 35-45 km / h, but has critical drawbacks:

• 🔥 Controller overheating: without additional cooling, the board may fail after 1-2 months of intensive driving.
• 🔋 Accelerated battery discharge: at a speed of 40 km / h, the Xiaomi Pro 2 battery sits down 2 times faster.
• ⚠️ Risk of fire: poor-quality soldering or incorrect denomination of the resistor can lead to a fire.

💡

Before soldering, take a photo of the controller board from several angles, which will help connect the wires correctly when assembled. Use a heat shrink tube to isolate the contacts.

Custom firmware (CFW): maximum acceleration and risk

For experienced users willing to sacrifice stability for speed, there are custom firmware (Custom Firmware, CFW). They allow you not only to remove the speed limit, but also to change other parameters: engine power, brake sensitivity, accelerator response. CFW Xiaomi:

• 🚀 ScooterHacking CFW — supports most models, allows you to accelerate to 50 km / h.
• ⚡ DarkMatter – Optimized for Pro 2 and 4 Pro, adds Turbo and Eco modes".
• 🛠️ Xiaomi Scooter Toolbox – flexible settings, but difficult to install.

The firmware process includes several stages:

1. Download. CFW from the official website (e.g. ScooterHacking) Pay attention to the version of the controller of your model!
2. Connect the scooter to the PC through STM32-port (adapter required) USB-TTL).
3. Use the ST-Link Utility or Flash Loader Demonstrator program to record firmware.
4. After the firmware, reset the scooter settings (hold the power button). + gaseousness).

Warnings:

• 💥 Risk of "bricking": Wrong firmware can render the scooter inoperable.Recovery will require programmer and skills.
• 🔌 Incompatibility with updates: After installation CFW You can not update the official software through Mi Home.
• 📉 Loss of function: Some CFW shut down KERS (Regenerative braking) or cruise control.

💡

Custom firmware provides maximum speed, but requires deep technical knowledge. For most users, the optimal balance is software acceleration to 30-35 km / h via DownG.

Alternatives to acceleration: legal ways to increase speed

If you are not willing to risk warranty or safety, consider legal methods to improve scooter dynamics:

• 🔄 Firmware update: Sometimes official updates from Xiaomi slightly increase the top speed (for example, on Xiaomi 4 Pro after upgrading to 1.4.6 the limit increased from 25 to 27 km / h).
• 🪑 Weight optimization: Remove unnecessary accessories (such as a trunk or heavy case) Every 5 kg reduces the top speed by 1-2 km / h.
• 🛞 Wheel replacement: Install slicks with less rolling resistance (e.g. Kenda) K193 This will add 2-3 km/h without interference with electronics.
• 🔋 High-quality charger: Use 2A RAM instead of the standard 1.5A. This will speed up charging and slightly increase battery efficiency.
• 🧭 Route: Drive on flat asphalt – gravel or sand can reduce speed by 10-15%.

Also worth paying attention to the driving modes. Most Xiaomi models have three modes:

• Eco - limit of 15-18 km / h, minimum battery consumption.
• Standard - 20-25 km / h, the balance between speed and autonomy.
• Sport - maximum speed (up to 25-30 km / h depending on the model), but fast discharge.

Switch modes with a double press of the power button - this can give an increase of up to 5 km / h without any modifications.

Risks and consequences of removing the speed limiter

Before deciding on dispersal, assess the possible negative consequences:

Especially dangerous is acceleration for models with small wheels (8-8.5 inches), such as the Xiaomi Mi Electric Scooter Essential. At speeds above 30 km / h, they become extremely unstable on irregularities.

• 🛡️ Wear a helmet and protective equipment (elbows, knee pads).
• 🚦 Observe traffic rules: it is forbidden to ride on the carriageway (only bike paths or sidewalks).
• 🔧 Check brakes and tire pressure regularly (optimum 2.5-3.0 bar).

⚠️ Note: On Xiaomi scooters with modified speeds above 35 km/h, the risk of speed wobble, which is the spontaneous rocking of the steering wheel at high speed, increases significantly.

FAQ: Frequent questions about the acceleration of electric scooters Xiaomi