Owners of popular electric vehicles from the Chinese giant often face the question of how to remove the speed limit on the Xiaomi electric scooter. Factory firmware artificially strangles the potential of the engine in order to comply with safety regulations and laws of different countries. However, enthusiasts are always looking for a way to squeeze the maximum out of their equipment, wanting to increase the dynamics of acceleration and maximum speed.
There are many myths and misconceptions that it is enough to download an app or click a secret combination of buttons. The reality is that unlocking speed requires tampering with the controller's software code or replacing hardware components. Before you start any manipulation, you need to be clear that you are acting at your own risk.
In this article, we will look at the actual technical methods available today and explain why popular Internet life hacks don’t work. You will learn about the BMS and controller flashing procedure, and the consequences of removing software limits. Security is the first thing to think about before modifying a device.
Myths about applications and software loopholes
The Internet is full of tips offering to increase speed with third-party apps for Android or iOS. Users are in droves looking for a miracle program that will change the controller parameters with one click.
Apps like Xiaomi Home or Mi Home are solely used to monitor battery health, view travel statistics, and update firmware, and do not have administrative access to the speed limit registry, and attempts to use modified versions of apps often result in a locking of an account or inability to connect to a scooter.
⚠️ Attention: Downloading untested APK-files with promises of “overclocking” the scooter can lead to infection of your smartphone with malware.
Some users believe in the myth of the “regional version” that can be changed in the profile settings. Indeed, the European versions (EU) have a limit of 25 km / h, and the Chinese (CN) – up to 30 km / h. However, simply changing the region in the Mi Account profile is not enough, since the controller “remembered” its regional affiliation at the first activation.
Hardware method: Replacement of the controller
The most reliable, but also the most expensive, way to increase speed is to physically replace the controller(s) of the scooter. Standard boards installed in the factory have rigid software limits that cannot be circumvented without losing warranty.
For the Mi Electric Scooter Pro 2 and 1S series, there are third-party controllers from manufacturers such as Nfine or Flux. These components are often free of regional restrictions and allow speeds of up to 35-40 km / h. However, such an upgrade requires soldering and disassembling deck skills.
The replacement process includes the following steps:
- 🔋 Completely shutting off the battery and removing the deck to access the insides.
- 🔌 Dismantling the old controller and neatly disconnecting all plumes.
- ⚙️ Installation of a new board and connection of wires according to color marking.
- 🔧 Assembly of the body and testing of the engine on the stand.
It is important to understand that installing a third-party controller automatically voids the warranty, and that poor-quality assembly can lead to short circuits or fires. If you do not have experience with electronics, you should contact a specialized service.
Compatibility of controllers
Controller firmware: technical aspect
A more advanced method is to flash the full-time controller, which requires special hardware like an ST-Link or J-Link programmer and soldering iron skills, so you have to open the controller, find the contact areas on the board, and connect to them to write new code.
There are custom firmware, for example, from the Custom Firmware community, that removes the speed limit and allows you to adjust the recovery and start settings. However, the controller firmware risks bricking the device. If the process is interrupted or the wrong file is downloaded, the scooter will stop responding to commands.
To connect to the controller board, you usually need to disassemble the deck, remove the protective cover from the electronics unit and gently solder to the test points. This requires high accuracy, since the tracks on the board are very thin and easily damaged.
☑️ Ready to flash
Once you've done this, you'll have access to the advanced settings through software on your computer, so you can adjust the motor current, change the acceleration curve, and turn off the sound signals, but remember, overheating is the main enemy of the modified scooter.
Comparison of acceleration methods
The choice of upgrade method depends on your technical skills, budget and willingness to risk the guarantee. Below is a comparative table of basic methods to help you make an informed decision.
| Method | Cost | Difficulty | Risk of breakdown | Preservation of the guarantee |
|---|---|---|---|---|
| Annexes (Myth) | 0 rub. | Low. | Absent. | Yes. |
| Replacement of the controller | Tall. | Medium | Medium. | No. |
| Flip-flashing | Medium | Tall. | High-pitched | No. |
| Relocation of region (Of) | 0 rub. | Low. | Absent. | Yes (partially) |
As you can see from the table, free methods either don't work or they do minimal work. Real speed increases require financial investment and technical knowledge. The safest way is to change the region through a service center, but it's not available in all countries.
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If you decide to change the controller, buy a more powerful power supply right away. A regular charge can charge the overclocked battery for too long or incorrectly determine the end of charge.
Impact of acceleration on battery and safety
Speed increases have a direct impact on energy consumption: when driving at 35 km/h instead of 25 km/h, battery consumption increases exponentially due to air resistance, which means that the manufacturer's stated range of 30 km can be reduced to 15-18 km.
In addition, the standard cooling system and the Battery Management System (BMS) are designed for certain currents. When driving aggressively, the batteries can overheat, which reduces their lifespan, and in the worst case, thermal runaway and lithium cells can ignite.
⚠️ Attention: Operation of the modified scooter at low temperatures (below) +5°C) strongly discouraged: a cold battery under high load can fail instantly.
The brake system also suffers. Xiaomi's standard brakes are designed for a top speed of 25 km / h. With an increase in the weight of the scooter (if the driver is large) and the speed of the braking distance increases significantly, which increases the risk of accidents.
Legal aspects and responsibility
Removing the speed limit puts your vehicle in another category from the point of view of the law. In many countries, including the Russian Federation and the EU, scooters with a power above 250 watts or speeds above 25 km / h are equated with mopeds.
This entails having category M rights, vehicle registration and license plate installation, and in the event of a modified scooter accident, the examination will easily reveal the interference with the design, which can shift all responsibility to the driver.
Insurance companies can refuse payment if it is proved that the scooter did not meet the declared specifications at the time of the insured event, so before the modification, it is worth weighing all the pros and cons.
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Acceleration of the scooter is not just “became faster”, it is a complex change in the characteristics of safety, range and legal status of the device.