Owners of popular electric vehicles often think about how to make the most of their device. The standard speed limits of 25 km/h set by the manufacturer to comply with European standards may not seem enough for experienced riders. The desire to accelerate is quite natural, especially when the technical potential of the engine allows you to achieve significantly higher speeds.
However, before you start any manipulation of software or hardware, you need to understand the risks: Interfering with the controller or changing the firmware can lead to loss of warranty, overheating of components and even emergency situations. Removing speed limits on Xiaomi Mi Scooter 1S, Pro 2 and Essential electric scooters requires disabling BMS (Battery Management System) at the software level, which is an irreversible process for stock firmware.
In this article, we will look at legal and technical ways to improve productivity, and we will look at both software methods, such as changing regions and installing custom firmware, and physical improvements. Security remains a priority, so every step will be accompanied by the necessary warnings.
Software limitations and security standards
Xiaomi makes devices with different regional settings. In the European Union, speeds are limited to 25 km/h, while in the US or China, limits can be higher. This limitation is sewn into the controller's algorithms and checked every time the system is started, and understanding this mechanism is the first step to bypassing it.
Stock firmware constantly monitors battery status, engine temperature and current speed. If you try to simply change the setting in the application, the controller will ignore the command because it failed to verify the digital signature, which is why simple hacks through Bluetooth emulators often stop working after the software update.
There's a myth that overclocking only hurts the battery, and in fact, when you run faster than normal, the brake system gets a lot of stress that it wasn't designed to do, and increasing kinetic energy requires earlier and stronger braking.
โ ๏ธ Note: Operating an electric scooter that exceeds the manufacturer's stated speed characteristics on public roads may entail administrative liability.
In addition, the motor-wheel, when operating at higher speeds, generates more heat. General cooling, which is passive (due to air movement), may not cope with heat removal during prolonged driving at maximum speed, leading to degradation of magnets and windings.
Changing the region through the Mi Home app
The safest and easiest way for every user to do this is to change the region in the Mi Home app, where some regions, like the United States or China, have less stringent speed limits or allow for higher power to be developed at the start, and this method doesn't require a computer connection or sophisticated software.
To implement this method, you will need to reset the region in the application, re-title the scooter and choose a country with less stringent limits. However, it is worth considering that the manufacturer in the latest versions of firmware has begun to block this method. If the scooter is updated to the latest version, changing the region may not give effect or require a preliminary rollback of the version of the software.
The process is as follows:
- ๐ฑ Open the Mi Home app and go to profile.
- ๐ Click on the region settings and select, for example, "United States" or "China".
- ๐ Disconnect the scooter from your account and add it again, following the instructions.
- ๐ Check the maximum speed in the app or on the display.
If the speed is the same after the region change, then your firmware version is forced to set limits regardless of geolocation, in which case only deeper intervention methods will help, and it is worth noting that if you change the region, the application interface can partially switch to English or Chinese.
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Before changing the region, be sure to write down the current settings of the scooter (connection password, firmware version) to be able to return to the original state in case of problems.
Installation of custom firmware (Custom Firmware)
The most effective way to overclock the Xiaomi Mi Scooter is to install modified firmware. Enthusiasts around the world create versions of software that remove speed limits, change the logic of recovery and improve overclocking dynamics. Popular builds are often based on the original code, but with modified BMS parameters.
To install custom firmware, you will need a computer (Windows, macOS or Linux), USB-The process requires care, as a mistake in the flashing stage can turn your transport into a brick. It is important to use only proven sources, such as the official repository of Xiaomi-Dashcam-Tools or a forum. 4PDA.
The main stages of firmware:
- Download the latest custom firmware for your model (1S, Pro 2, Essential).
- Connect the scooter to the PC through a special adapter or disassembling the deck, finding contacts TX/RX.
- Launch the sewer tool and follow the instructions on the screen.
- After successful installation, check the operation of all systems.
โ ๏ธ Warning: Installing third-party firmware automatically voids the manufacturer's warranty. In case of a failure of the controller or battery, the service center will refuse free repairs.
Once you install custom software, you'll have access to hidden menus where you can fine-tune your top speed, your recovery power, even your audio signals, and some firmware also allows you to display a more accurate percentage of your battery charge.
โ๏ธ Firmware readiness
Hardware modifications and replacement of components
Software isn't the only way to affect speed; hardware changes can produce more stable results, especially if software methods are blocked by the manufacturer, but this path requires technical skills and an understanding of electrical engineering.
One common modification is to replace the controller with a more powerful one. The stock controller is often limited in current, which prevents the motor from reaching full power. Installing a powerful controller (for example, from Kelly or other third-party manufacturers) allows you to significantly increase the dynamics of acceleration and maximum speed.
The battery voltage also affects the speed, and standard scooters run on 36V. Switching to a 48V battery (assuming the motor and controller can withstand the increased voltage) will increase the speed in proportion to the increase in voltage, but it is a complex and expensive procedure that requires replacing many components.
Comparison of modification methods:
| Method | Cost | Risk of breakdown | Speed increase |
|---|---|---|---|
| Change of region | 0 rub. | Low. | 0-5 km/h |
| Custom firmware | 0-500 rubles. | Medium. | 5-10 km/h |
| Replacement of the controller | Tall. | High-pitched | 10-15 km/h |
| Increased voltage | Very high. | critical | 15-20 km/h |
Keep in mind the mechanical part: Installing tires with a smaller tread or a harder rubber composition can reduce rolling resistance, which indirectly affects maximum speed and range.
Effect of Rider Weight and Tire Pressure
Often, users forget that speed is not just about the power of the motor, but also the resistance it overcomes. Tire pressure is critical. Under-inflated wheels increase contact spot and drag, which can eat up to 10-15% of the top speed and significantly reduce the range.
The recommended pressure for most Xiaomi models is 50 PSI (about 3.5 bar). Using a pump with a pressure gauge is mandatory, since it is impossible to determine the desired pressure by eye. Pumping tires is also dangerous - this worsens traction and increases the risk of puncture.
The weight of the rider is another factor. The electric motors are designed to handle a certain load. If the user's weight is close to the limit (usually 100-120 kg), the scooter will not be able to reach the maximum speed, especially on the climbs, in which case no firmware will help unless you switch to a more powerful battery and controller.
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Maintaining the correct tire pressure is the easiest and safest way to return the scooter to factory dynamics without interference with electronics.
It's also worth checking the wheel bearings. If the scooter was in dirty conditions or rain, the bearings could rust or get dirty, creating additional friction, and if they were greased or replaced in a timely manner, they would make it easier to ride.
Braking system maintenance after acceleration
Increased speed requires the appropriate upgrades of the braking system. the standard brakes on Xiaomi Mi Scooter (electronic + disc or drum) are designed to quench energy at a speed of 25 km / h. When accelerating to 35-40 km / h, their efficiency decreases, and wear increases exponentially.
First, look at the brake pads. You'll have to change them more often after tuning. You'll have to use the pads with a higher friction ratio, but you'll have to make sure they don't overheat the disc. Overheating the brakes can cause the brake handle to fail and you'll lose all of your efficiency.
It is also recommended to check the tension of the mechanical brake cables. A weakened cable increases the stroke of the handle, which is critical in an emergency at high speed. Adjustment takes a couple of minutes, but significantly improves safety.
โ ๏ธ Warning: Never rely on electronic recovery alone at high speeds. Electronics may fail, and the only way out is mechanical brakes.
If you are actively using a scooter at high speeds, consider installing a larger brake disc (if the design of the fork allows) or switching to hydraulic brakes, which provide more stable and powerful braking.