Xiaomi electric scooter M365 It's one of the most popular vehicles in the city, but over time, even the most reliable vehicles require maintenance. M365, How to test it and replace it if necessary. In this article, we will examine all the nuances: from the factory characteristics of the battery to compatible analogues and step-by-step instructions for replacing it.
Standard battery in Xiaomi M365 — This is a lithium-ion battery with a capacity of 7800 mAh (280 Wh) with a voltage of 36 V. However, after 2-3 years of active operation, its capacity can decrease by 30-50%, which affects the power reserve. We will tell you how to determine wear, which original and non-original options are suitable for replacement, as well as give tips on extending the service life.
Important: Information is relevant for all modifications M365, including Pro versions, 1S and Essential, unless otherwise indicated. M365 Pro 2 and newer (e.g, M365 Pro 3: Battery characteristics are different – we’ll look at them separately.
The original Xiaomi battery M365: technical characteristics
Factory battery in Xiaomi M365 has the following parameters:
- 🔋 Battery type: Li-ion (lithium-ion), assembly from Samsung cells or LG (party-wise).
- 📊 Capacity: 7800 mAh (280 Wh) - this is enough for 25-30 km of run at an average load.
- ⚡ Voltage: 36 V (nominal), maximum - 42 V when fully charged.
- 🔌 Discharge current: up to 15 A (peak - 20 A at a sharp acceleration).
- 📅 Lifespan: 500–800 full charge cycles (when used correctly).
The original battery has a built-in BMS-Battery Management System, which protects against overcharging, deep discharge and short circuit:
- 🏷️ Serial number (starting with MS01 or MS02).
- 📅 Date of production (format) YYYY-MM-DD).
- 🔢 Shar-code (to verify authenticity through the official Xiaomi website).
Importantly, Xiaomi’s original batteries come only in black with the brand logo, and if you’re offered the “original” in white or gray, it’s a fake.
How to check the status of Xiaomi battery M365
Before replacing a battery, you should evaluate its current state.
- Using the mobile app: Install the official Mi Home or Xiaomi Scooter app (for the first time) M365 3.5.6 and above is the right version. → The battery is displayed: 📉 Current charge level (B %). 🔋 Number of complete charging cycles. ⚠️ Error messages (e.g., Battery Error 21).
Multimeter
Measure the voltage at the battery terminals when the scooter is turned off:
- 🔌 36-42V - Battery normal.
- 🔌 30–35 V – Charging is required.
- 🔌 Below 29V – deep discharge, urgent charging or replacement is required.
- If the scooter travels less than 15 km on one charge (under normal conditions), and the battery is swollen or warmed - these are clear signs of wear.
Critical warning: if the battery voltage has dropped below 25 V, it cannot be charged with standard RAM, which can lead to fire, in which case it requires "resuscitation" through a laboratory power supply or replacement.
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Before checking with a multimeter, disconnect the battery from the scooter controller to avoid false readings.
Compatible batteries for Xiaomi M365: original vs analogue
If the original battery fails, you have three replacement options:
| Type of battery | Capacity | Price (2026) | Pluses | Cons |
|---|---|---|---|---|
| The original Xiaomi | 7800 mAh | 12 000–15 000 ₽ | ✅ Full compatibility✅ Warranty 1 year✅ Built-in BMS | ❌ High price.❌ Hard to find. |
| Baseus, Ninebot (license) | 7,800-10,000 mAh | 8 000–11 000 ₽ | ✅ Quality close to the original✅ Easier to find. | ❌ 6 months warranty❌ Possible problems with BMS |
| Unoriginal (Chinese) | 7,800-15,000 mAh | 5 000–9 000 ₽ | ✅ Low price✅ Options with increased capacity | ❌ Risk of bloating/fire❌ No certification |
When choosing an analogue, pay attention to:
- 🔌 The connector: must match the original (10-pin connector).
- 📏 Dimensions: 360×90×70 mm (permissible deviation) ±5 mm).
- 🔋 Cell Type: Samsung is preferred 35E, LG MJ1 Panasonic NCR18650B.
⚠️ Warning: Batteries over 10,000 mAh may not display the charge level correctly in the Mi Home app.
Step-by-step instructions for replacing the battery
Replace the battery in Xiaomi M365 You can do it yourself, but you will need tools:
- ⚒️ The screwdriver (PH2).
- 🔧 Plastic mediator (to open the body).
- 🔌 Multimeter (to check the voltage).
Sequence of action:
- Disconnect the scooter from the network and remove the battery from the socket (click on the lock at the bottom of the case).
- Remove the bottom cover: Unscrew the 4 screws on the bottom and gently tuck the cover with a mediator, starting at the back.
- Disconnect the connectors: Turn off 10-pin Battery connector from the controller (do not pull the wires!).
- Remove the old battery: Unscrew the 2 screws locking the battery and take it out of the case.
- Install a new battery: Place the battery in the socket, connect the connector and lock with screws.
- Check performance: Turn on the scooter and check the charge display in the application. If the indicator flashes red, check the density of contacts.
Charging to 100% error-free|Correct level display in the annex|No overheating of the battery|Stable operation of the motor-->
If the scooter is not switched on after replacement:
- 🔌 Check the polarity of the connector connection.
- 📱 Reset the settings in the application (Settings) → Data resetting).
- 🔧 Update the controller firmware (instructions in the next section).
Update of the controller firmware after battery replacement
If you have a different battery capacity (e.g. 10,000 mAh instead of 7800 mAh), the scooter controller may not be able to calculate the charge level correctly. DRV-controller (battery control module).
Refreshment methods:
- 📱 Through the app: In Mi Home go to Settings → If you have a version that supports a new battery, install it.
- 💻 Through PC: Use the Xiaoflasher utility (you can download it on the official website). Connect the scooter via Bluetooth and select the firmware for your battery model.
Important: Do not use the firmware from M365 Pro for the standard model - this can lead to a failure in the operation of the engine.
How do you get into firmware mode?
Frequent problems with Xiaomi battery M365 and their decisions
Even a new battery can be unstable, and consider the typical malfunctions and how to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| Scooter not switched on | Battery discharged or defective BMS | Check the voltage with a multimeter. < 25V – Use a laboratory power supply to “wake up". |
| Fast discharge (less than 10 km) | Cell wear or high current consumption | Check the capacity with a tester. < 50% of the value – replace the battery. |
| Battery's warming up. | Short circuit or overload | Disable the scooter immediately, check the integrity of the wire insulation. |
| Battery Error 21 Error | Incompatibility BMS controller | Update the firmware or replace the battery with a compatible model. |
If the battery is swelling:
⚠️ Warning: Do not try to charge or operate a bloated battery! This can lead to fire. Dispose of it at special reception points (in Moscow - Ecosystem).
How to extend the battery life of Xiaomi M365
Compliance with simple rules will help to save the battery capacity for 2-3 years longer:
- 🔌 Charge at a temperature of 10–25°C. Avoid charging in the cold or in the heat.
- 📉 Don't discharge below 20%. Deep discharge reduces cell life.
- 🔋 Store 40-60% charge. If you don't use a scooter in the winter, charge the battery to half and turn it off.
- ⚡ Use the original RAM. Chargers from other models may be giving the wrong voltage.
To check the status of the battery every 3 months:
- Fully charge the scooter.
- Drive 10-15 km at an average speed (20-25 km / h).
- Check the remaining charge in the app, and if it drops by more than 50 percent, the battery capacity drops critically.
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Optimal operating mode for battery durability: charging up to 80-90%, discharge up to 20-30%, storage at 15-20°C.