Xiaomi scooters have become an integral part of urban mobility, but many owners are faced with the question: how long does it take to charge the battery to not reduce its life? The answer depends on the model, the type of battery and even the ambient temperature. In this article, we will analyze the real-life data on charging times for popular models (M365, Pro 2, 4, Essential) with their technical features, and also reveal the secrets of how to extend the life of lithium-ion batteries by 30-50%.
You might be surprised to learn that even Xiaomi’s official instructions often show averages, without taking into account nuances: for example, charging times can increase by 40% at temperatures below +5°C, and charging times can increase by 60% when using a non-original charger, and we tested charging in practice and collected data to help avoid typical errors, from battery overheating to the “memory effect”, which reduces capacity by 20% after 100 cycles.
Why charging times are different for different Xiaomi models
All Xiaomi scooters are equipped with lithium-ion batteries, but their capacity, voltage and supported charging currents vary. For example, the Xiaomi Mi M365 has a 7800 mAh battery with a voltage of 36 V, while the Xiaomi Pro 2 is 12800 mAh at the same voltage. This means that even with the same charger (for example, 42 V / 1.5 A), the full charge time will be different.
Key factors affecting speed:
- 🔋 Battery capacity: The larger the mAh, the longer the charge (e.g., Essential with 7650 mAh charges faster than Pro 2 with 12800 mAh).
- ⚡ Charger power: Xiaomi’s original RAMs deliver 1.5–2 A, but some models (like the Pro 4) support 3 A for accelerated charging.
- 🌡️ Ambient temperature: Optimal range — +10°C…+30°C. At 0°C time increases by 30-50% and when +40°C charging automatically shuts down.
- 🔌 Battery condition: A worn-out battery (more than 500 cycles) charges more slowly due to increased internal resistance.
Fun fact: Xiaomi Mi 4 Pro is equipped with a two-stage charging system, the first 80% of the capacity is restored in 3.5 hours, and the last 20% - in 1.5 hours (total 5 hours), this is done to protect the battery from overheating.
Table: charging time according to Xiaomi models (original RAM, 20°C)
| Model | Battery capacity | Charging current | Time 0→100% | 20.→80% |
|---|---|---|---|---|
| Xiaomi Mi M365 | 7800 mAh | 1.5 AA | 5.5 hours | 3 hours |
| Xiaomi Pro 2 | 12,800 mAh | 1.7 A | 7-8 hours | 4.5 hours |
| Xiaomi Essential | 7650 mAh | 1.5 AA | 5 hours | 2.8 hours |
| Xiaomi Pro 4 | 12,800 mAh | 3 A (fast charging) | 5 hours | 3 hours |
Note that the values in the table are relevant for new batteries and original chargers. If you use third-party RAM (for example, with 2 A current for the M365), the time can be reduced by 1-1.5 hours, but this reduces battery life by 15-20% per year.
⚠️ Attention: If your scooter charges 30% or more more than the specified time, this is a sign of battery degradation or a malfunction of the controller.
How to charge correctly: 5 rules for extending the service life
The average life of Xiaomi’s lithium-ion battery is 500-800 cycles (about 3-5 years with heavy use), but if you charge it incorrectly, this figure can be reduced to 300 cycles.
Store the battery at a charge level of 40-60% (for long-term storage)
Charge at +10°C...+30°C
Use only original RAM or certified analogues
Do not leave on charging for more than 12 hours (risk of overheating)
Avoid full discharge (charge at 10-20% of the remainder)-->
Many people mistakenly believe that the battery should be completely discharged before charging - a myth that is relevant to nickel-cadmium batteries 20 years ago. Xiaomi's modern lithium-ion batteries do not have a "memory effect", but are extremely sensitive to:
- 🔥 Overheating: If the battery case is hot (more than that) +45°C), turn off the charging immediately.
- ❄️ Storage in discharged state: If you leave the scooter for the winter with 0%, the battery can fail.
- ⚡ Use of "fast" charges: RMS with current > 2 And M365/Pro 2 reduce the resource 30%.
The manufacturer recommends charging the scooter after each trip, even if the battery is only 30% dead, because frequent small recharges (for example, from 50% to 80%) are less harmful than deep cycles (0→100%).
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If you don’t plan to use a scooter for more than a month, charge the battery to 60% and store it in a cool place (+10...+15°C).
What to do if the scooter is not charging or charging for too long
If the charging indicator is not lit or the process takes more than 10 hours, the reasons may be as follows:
| Problem. | Possible cause | Decision |
|---|---|---|
| Charging doesn't start. | Faulty zoo or socket | Check the voltage in the socket, try another ZU |
| The indicator flashes red. | Short circuit in the battery | Contact the service (self-repair is dangerous!) |
| Charging takes more than 12 hours. | Battery degradation or BMS failure | Calibrate or replace the battery |
| The scooter is turned off at 30% charge | Incorrect calibration of the controller | Discharge to 0%, then charge to 100% without interruptions |
One of the most common failures is that the BMS (battery management system) is not working properly, for example, if the scooter is 100%, but after 5 minutes of driving it is abruptly switched off, it means that the BMS is not measuring the voltage on the cells correctly.
- Completely discharge the scooter until it is automatically shut down.
- Connect to charging and wait 100% (don’t interrupt the process!).
- Repeat the cycle 2-3 times for recalibration.
⚠️ Warning: If after calibration the problem persists, don't try to disassemble the battery yourself! Xiaomi Lithium-ion batteries contain cells with a voltage of 3.6V, and short circuit can lead to a fire.
What if the scooter does not turn on after charging?
Can I use non-original chargers?
Xiaomi’s original RAM costs 1,500–2,500 ₽, So many owners are looking for analogues, but cheap charging (for example, for 500). ₽) Often do not meet the requirements:
- 🔌 Unstable voltage: Instead of 42 V can give 45 V, which destroys the battery.
- 🔥 Lack of protection: No temperature or current control, risk of overheating.
- ⚡ Poor quality of components: Capacitors swell after 3-6 months.
If you decide to save money, choose certified analogues with parameters:
- 📌 Voltage: 42 V ± 0.5 V.
- 📌 Current: no more 2 And M365/Pro 2 and 3 And for the Pro. 4.
- 📌 Certificates: CE, RoHS, UL.
Examples of reliable brands: Baseus, Aukey, Anker (42V models). Check reviews before buying - some Chinese ZUs forge certificates.
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Using a non-original RAM will void the warranty on Xiaomi's battery. If the battery fails, the service center will refuse repairs.
How to speed up charging without harming the battery
If you need to charge the scooter quickly before traveling, follow these tips:
- ⚡ Use 2A RAM (for Pro 4 – 3A), but no more than 1 time a week.
- 🔋 Charge up to 80% – the last 20% takes 40% of the time.
- 🌡️ Place the scooter in a warm place (such as near the heating battery) if the temperature is lower. +15°C.
- 📵 Turn off Bluetooth and backlighting – this reduces time by 5-10 minutes.
Important: Do not use "fast charging" (e.g. 65W laptop RAM), even if the connector fits! 19–20V voltage is critical for Xiaomi battery and can cause:
- 🔥 Cell fire.
- ⚡ Battery bloating.
- 🚫 Controller breakdown.
For emergency cases, you can use a powerbank with a output of 42 V (for example, Xiaomi Mi Power Bank Pro 42V), but its capacity (12,000 mAh) will only last for 30-40% of the charge of the scooter.