How to increase the power of the electric scooter Xiaomi: from firmware to upgrade iron

Xiaomi scooters are some of the most popular vehicles in the city, but factory settings often limit their real potential. 25 km/h speed, low acceleration on the rises and a fast-setting battery are familiar problems (M365, Pro 2, 1S, 4 Pros) have a power reserve that can be disclosed without compromising safety.In this article, 7 working ways to increase power, from software to hardware, with detailed instructions and warnings about the risks.

It's important to understand that any tuning affects the life of the equipment. Acceleration to 35-40 km / h reduces the battery life by 20-30%, and modification of the controller can lead to overheating. We will tell you how to minimize risks and choose the best method for your tasks, whether it is increasing speed, improving acceleration or extending battery life.

1. Controller firmware: the most affordable way to overclock

Xiaomi's factory firmware limits speeds to 25 km/h (in some countries up to 20 km/h) due to local laws, which can be removed by flashing the controller through special utilities.

• 🔧 DownG is a Windows utility that supports most Xiaomi models, including M365, Pro, 1S). Allows you to change speed limits, current strength and even adjust regenerative braking.
• 📱 ScooterHacking Utility – mobile application for Android (requires) OTG-Suitable for quick on-the-go configuration, but has fewer options than desktop solutions.
• 💻 Custom Firmware (CFW) — custom firmware from the community (for example, Xiaomi) M365 CFW). Give maximum freedom, but require experience and can cancel the warranty.

The firmware process through DownG:

1. Download the utility from the official Downg website (version not lower than 3.2).
2. Connect the scooter to the PC through USB-C port (under the lid next to the steering wheel).
3. Select the scooter model from the utility menu and click Read Flash to back up the current firmware.
4. In the Speed Limit section, set a new value (for example, 35 km/h) and save the changes (Write Flash).

⚠️ Attention: Incorrect firmware can brick the controller. Always back up the original firmware and use stable versions of the software. If the scooter stopped responding to the on button, try resetting by slamming the Power. + Torch for 10 seconds.

After firmware, it is recommended to check the work of regenerative braking (it can turn off). To do this, accelerate to 20 km / h and sharply release the gas - if the scooter does not brake the engine, turn on the option in the utility settings.

Battery modification: more capacity = power

Xiaomi standard batteries (e.g. 7800 mAh in) M365 Or 12800 mAh in the Pro 2, which is often a bottleneck when tuning, increasing capacity or replacing it with more powerful elements allows you to have a more powerful system:

• ⚡ Extend the operating time by 30-50% (from 30 km to 45-50 km on a single charge).
• 🔋 Improve acceleration due to increased discharge current (especially important for climbs).
• 🔄 Reduce voltage drawdown at high loads (e.g. speeds above 30 km/h).

Upgrade options:

The replacement cells will require:

1. Disassemble the body of the scooter (unscrew 9 bolts under the lid and 4 bolts on the bottom).
2. Unplug BMS (Battery control board) and remove old items.
3. Install new cells (e.g. Samsung) 50E 5000mAh), respecting polarity and sequence of compounds.
4. Sealing the balancing wires to BMS and check the voltage multimeter (must be 42–43V for 10S configuration).

Stolen iron (power 60–100W)|Multimeter for voltage testing|Thermal shrink tubes for insulation|New cells (e.g. Samsung) 50E or LG MJ1)|Sticking glue for battery pack-->

⚠️ Warning: When working with lithium-ion batteries, use safety glasses and gloves. Short circuits can lead to fire! If you are not sure about your soldering skills, consult a specialist. Also note that the modification of the battery cancels the warranty and can cause a denial of service.

3. Motor replacement: more power and torque

Xiaomi's Standard Engine M365 power 250W, a in the Pro models — 350W. For a serious increase in dynamics, you can install a motor from other scooters, for example:

• 🔄 Motor 500W from Ninebot Max G30 — Increases speed to 40 km/h and improves acceleration on climbs (up to 20.
• ⚡ Motor 800W (For example, from Dualtron Mini - for extreme tuning, but consumes a lot of energy and reduces battery life.
• 🔋 Motor 350W with improved magnets - "soft" upgrade without replacing the controller, gives +10-15% power.

Engine replacement process:

1. Remove the rear wheel by unscrewing 4 bolts on the axle and disconnecting the power connector.
2. Remove the old motor and install a new one, combining the gears with the drive.
3. Connect the connector to the controller (if the motor is more powerful) 500W, You will need to install the controller under new parameters).
4. Calibrate the speed sensor (in some cases, a magnetic ring may need to be replaced).

After the replacement of the engine, check:

• 🔧 Wheel balance (imbalance leads to vibrations at high speed).
• 🔥 Engine temperature after 10 minutes drive (normal - up to 60)°C).
• 📉 Energy consumption (powerful motor can drain the battery in 15-20 km).

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If the scooter twitches when accelerating after the engine is replaced, check the controller's compatibility with the new engine. PWM (pulse-width modulation up to 90-95%.

4.Improving the cooling system: why it matters

As the power increases, the controller and motor begin to warm up more, and overheating leads to:

• 🛑 Automatic disabling of the scooter (protection works at 80-90)°C).
• ⚡ Reduced maximum speed due to trottling (artificial power limitation).
• 🔥 Risk of insulation melting and short circuit.

Ways to improve cooling:

For the installation of the radiator:

1. Remove the controller cover (unscrew 4 screws).
2. Clean the surface with cleaning alcohol and apply a thin layer of thermopaste.
3. Attach the radiator to heat-glue or screws (such as an aluminum radiator). 20×30×10 mm).
4. For active cooling, connect the fan to 5V or 12V from BMS (through the resistor, if you need to lower the voltage).

⚠️ Warning: Do not use metal radiators without insulation - they can close contacts on the board! The best option is aluminum radiators with heat pads. Also avoid dragging screws when mounting, so as not to damage the board.

5. Optimization of gear ratio: gears and belt

Factory gear in Xiaomi is designed to balance speed and torque. By changing the gear ratio, you can:

• 🐢 Increase torque (improving acceleration and uphill climb) by reducing maximum speed.
• 🏎️ Increase the maximum speed (up to 40-45 km / h) due to deterioration of acceleration.

Modification methods:

• 🔧 Replacement of the gear of the motor with a different number of teeth (for example, with a different number of teeth) 12T on 10T speed up).
• 🔄 Installation of the Gates Carbon Drive belt instead of the standard one - reduces friction losses and increases efficiency by 5-7%.
• 🛠️ Modification of the leading star (requires turning works).

Example of calculation of gear ratio:

Standard configuration of Xiaomi M365:

Engine gear: 12 teeth




Wheel gear: 40 teeth




Transmission ratio = 40 / 12 ≈ 3.33

If you set the gear of the motor on 10 teeth, the gear ratio will be 4.0, which will increase the speed by 20%, but reduce torque.

6. suspension and wheel tuning: the effect on power

The quality of the suspension and wheels indirectly affects the power of the scooter:

• 🔄 Hard suspension reduces energy loss on depreciation, but reduces comfort.
• 🛞 Wide wheels (e.g. 10" instead of 8.5") improve traction but increase resistance.
• 🔥 Cameraless tires reduce the risk of puncture and improve coasting.

Upgrade recommendations:

• 🔧 Install hydraulic shock absorbers (e.g. from Ninebot Max) for better control at high speed.
• 🛠️ Replace standard wheels with 10-inch treads (e.g. Kenda) K1030) — This will increase clearance and improve passability.
• ⚡ Pump the tires to 40-45 pressure PSI (standard PSI) rolling resistance.

To replace the wheels:

1. Remove the old wheel by unscrewing 4 bolts on the axle.
2. Install a new wheel by combining the holes under the spokes.
3. Adjust the brake disc (if the wheel is wider, you may need to replace the caliper).

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Wide wheels increase the battery load, so after installing them, it is recommended to check the discharge current in the application (for example, ScooterHacking Utility). 20A, consider the possibility of upgrade BMS.

7. Additional accessories for safety and comfort

Increasing the power of the scooter requires improved safety.

• 🚲 Disc brakes (e.g. Shimano) MT200) — reduce the stopping distance from 5 m to 2-3 m at a speed of 30 km / h.
• 🔦 LED-The lights are the lights of the day, and the lights are the lights of the day.
• 🛡️ Protective bumper for controller – prevents damage from falls.
• 📱 Smartphone holder with steering wheel mount for navigation and speed monitoring.

It is also recommended that:

• Install rearview mirrors (e.g. Xiaomi Mi Electric Scooter Mirror).
• Use a bicycle helmet with certification EN 1078.
• Apply retroreflective stickers to the frame and wheels.

For the installation of disc brakes:

1. Remove the old wheel and brake mechanism.
2. Install a new rotor (diameter 140-160 mm) and caliper.
3. Adjust the position of the caliper so that the gap between the pads and the disc is 0.3-0.5 mm.
4. Pump the brake system (if hydraulics are used).

⚠️ Warning: After the disc brakes are installed, check their operation at a low speed (10 km/h).Sharp braking at high speed can lead to wheel locking and falling!

FAQ: Frequent questions about tuning electric scooters Xiaomi