Xiaomi’s electric toothbrushes are a popular oral hygiene gadget that combines technology and affordability. However, even these simple devices have nuances of operation, especially when it comes to charging. Mishandling the battery can shorten the life of the brush or cause it to break. In this article, we’ll look at how to properly charge the Mi Electric Toothbrush, Soocare, OralFresh and other models of the brand, from first charge to everyday use.
We will not only talk about the basic rules (how much time to keep charging, how to know that the battery is full), but also about hidden features, such as why some Xiaomi brushes do not turn on immediately after connecting to the network, how to reset the charging error and what to do if the indicator flashes red.
If you've just bought a brush or noticed that it's getting more discharged, this guide will help extend the life of the device, and for those of you who like numbers and technical details, we've prepared a table with the characteristics of the batteries of different models and comparing the operating time.
What Xiaomi brushes require charging: a review of models
Not all Xiaomi toothbrushes are battery-powered, such as the Mi Home series mechanical models that run on replaceable AAA batteries, but the electric ones require periodic recharging.
- 🔋 Mi Electric Toothbrush – the first mass model with a lithium-ion battery (capacity) ~800 mAh Supports wireless charging via magnetic dock.
- 🔋 Soocare X3/X5 — premium brushes with ultra-thin body and battery on 1000+ Charges from USB-Type C.
- 🔋 OralFresh T100/T300 — Budget options with charge indicator and operating time before 30 They use a proprietary connector.
- 🔋 Mi Smart Toothbrush – smart models with Bluetooth and Mi Home app, where the charge level is displayed.
Important: Even if your brush looks similar to the models listed above, check for a charging connector or docking station in the kit. Some clones (for example, from the Baseus or Haylou brands) visually copy the design of Xiaomi, but have different technical characteristics.
Most Xiaomi charging brushes have a light indicator (usually under the power button) that signals battery status, and if it is not available, you can only determine the level of charge by running time or through a mobile application (for smart models).
First charge: how to properly prepare a brush
Xiaomi's new brush often comes with a discharged battery -- which is normal, as the device could have been in storage for a long time.
- Check the package. The box should have a cable (USB-Type C or proprietary) and possibly a power adapter. If it's not available, use a smartphone charger with a 5V/1A or 5V/2A output.
- Connect the brush to the network. In models with a docking station (for example, Mi Electric Toothbrush), first install the brush in the holder, then connect the cable. In the Soocare X5, the connector is hidden under the plug - carefully remove it.
- Wait until you're fully charged. The time varies from 4 hours (OralFresh T100) to 12 hours (Soocare X3). Don't interrupt the process!
A critical nuance: when you first charge, some Xiaomi brushes (such as the Mi Electric Toothbrush T100) may not turn on until the battery is at least 20% charged. This is deep discharge protection. If the indicator does not burn in the first 30 minutes, do not panic, wait 1-2 hours.
Check the integrity of the cable and connector
Use the original adapter or smartphone power supply 5V/1-2A
Do not turn on the brush during charging (unless otherwise indicated in the instructions)
Wait for the full charge (the indicator will turn green or go out)-->
After the first charge, it is recommended to completely discharge the brush (before automatic shutdown) and recharge to 100%, which helps to calibrate the battery controller, repeat the procedure 1-2 times at the beginning of operation.
How long to charge the brush Xiaomi: table by model
Charging time depends on battery capacity, type of connector and power of the adapter. Below is a table for popular models. Note: if you use a non-original cable or an adapter with less power, the time can increase by 20-30%.
| Model | Battery capacity | Full charge time. | Working hours (with 2 cleanings / day) | Type of connector |
|---|---|---|---|---|
| Mi Electric Toothbrush T100 | 800 mAh | 4-6 hours | 18-25 days | Wireless docking station |
| Soocare X3 | 1,000 mAh | 8:10 hours | 30-40 days | USB-Type C |
| OralFresh T300 | 600 mAh | 3-4 hours | 14-20 days | Proprietary connector |
| Mi Smart Toothbrush T500 | 1200 mAh | 10-12 hours | 45-60 days | USB-Type C |
The data in the table is for the original chargers. If your brush charges longer than the specified time, check:
- 🔌 Cable and adapter – they must support current at least 1A.
- 🔋 Battery status – if the brush is more than 2 years old, the battery may have degraded.
- 📱 Ambient temperature - at a temperature below +10°C charging slows down.
Tip: If you use a brush every day, recharge it every 2-3 weeks without waiting for the full discharge.
Charging indicators: what do colors and flashes mean
Xiaomi brushes have a light indicator that is the main assistant in determining the status of the battery, and its behavior differs depending on the model, but there are general principles:
- 🟢 Green light (constant) – the battery is 100% charged, you can disconnect from the network.
- 🟡 Yellow/orange light – charging process (some models flashing).
- 🔴 Red light (constant) – low charge (less than 20%), requires a network connection.
- 🔴⚡ Red flashing – charging error (fault of cable, adapter or battery).
The Soocare X5 indicator is multicolored and displays the charge level in percentages through blinking:
- 1 blink - 25%
- 2 blinks - 50%
- 3 blinks - 75%
- 4 blinks - 100%
What to do if the indicator does not burn at all?
Smart brushes like the Mi Smart Toothbrush T500 send charge data to the Mi Home app, where you can set low battery notifications, and if the app is showing 100% charge and the brush is not working, try resetting it: hold the 10 seconds button.
Typical charging errors and how to avoid them
Even experienced users sometimes make mistakes that shorten the life of the brush.
⚠️ Warning: Never charge a Xiaomi brush from a powerful adapter (for example, from a laptop with a laptop). 20V/4.5A). This can damage the power controller and cause the battery to overheat.
- 🚫 Using unoriginal cables: Cheap cables may not provide stable voltage, leading to slow charging or overheating, especially dangerous for USB-Type C models.
- 🚫 Charging in a wet state. If the brush is wet, dry it before connecting to the network.
- 🚫 Charging storage. Constant networking reduces battery life. Turn off the brush after reaching 100%.
- 🚫 Ignoring indicator errors: If the LED flashes red, don't leave the brush on charging, which may indicate a short circuit.
Another common problem is that the brush doesn't hold a charge, and if it used to work 30 days, and now it discharges in a week, the reasons may be:
- Natural battery degradation (after 300-500 charge cycles)
- Use in high humidity conditions (for example, storage in a bath without a cover).
- Frequent temperature changes (for example, if the brush lies next to hot water).
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If the brush is slowly charging, try cleaning the dock contacts with a toothpick or a soft brush. Metal oxidation is a common cause of poor contact.
For models with removable batteries (for example, OralFresh T100) you can try to replace the battery yourself. Online, they sell repair kits with batteries with a capacity of 1000-1200 mAh, which will extend the life of the brush for another 1-2 years.
How to extend the life of the battery brush Xiaomi
The lithium-ion batteries used in Xiaomi brushes lose capacity over time, but proper care can slow this process.
- Avoid deep discharge. Recharge the brush when the indicator shows 20-30% charge. Full discharge (0%) is harmful to the battery.
- Keep it dry. Humidity accelerates contact corrosion and battery degradation. Use a case or a sealed container.
- Do not charge at extreme temperatures.The optimal range is from +10 °C to +35 °C. Charging in the cold or in direct sunlight reduces the life of the battery.
- Calibrate every 3 months. Discharge the brush completely, then charge to 100% without interruption.
For smart brushes (such as Mi Smart Toothbrush), it is useful to disable constant sync with the Mi Home app via Bluetooth. Frequent connections consume additional energy, which is especially noticeable on older batteries.
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The optimal operating mode is to keep the charge at 30-80%, which minimizes stress on the battery and prolongs its life by 20-30%.
If you're away for a long time and you don't use a brush, store it with a charge of about 50 percent, and a battery that's either completely discharged or 100 percent charged will fail faster if it's downtime.