Xiaomi’s Poco series smartphones have long proven to be reliable devices with excellent autonomy, and the Poco M5 is no exception. However, many users face a situation where their gadget charges much slower than the manufacturer’s stated values, often due not to a battery malfunction, but to banal settings or inappropriate accessories.
In this article, we will take a closer look at how to force the accelerated power up mode, what system constraints exist in the MIUI shell, and why your phone might ignore a powerful power supply. You will learn about the hidden battery optimization features that can interfere with normal operation.
Before we get to the complex manipulations, we need to understand the basic principle of the Quick Charge technology in this device: the system itself determines the state of the battery and the temperature of the case, adjusting the current supplied for maximum safety and durability.
It is worth noting that the Poco M5 supports fast charging technology with a power of up to 18 watts, but its implementation requires several conditions at the same time. If at least one component of the circuit does not meet the requirements, the smartphone will automatically go to standard charging mode 5V/2A.
Checking the compatibility of the charger and cable
The most common reason for slow charging is the use of unoriginal or damaged cables: fast charging protocols require data to be transferred between the power supply and the controller in the phone, which is impossible through cheap "charging-only" cables.
Make sure your power adapter supports QC 3.0 or PD (Power Delivery) standards.Regular power supplies from older phones or cheap Chinese counterparts often give off unstable voltage, which the Poco M5 system perceives as dangerous.
⚠️ Attention: Using damaged cables with inflections or bloated power supplies can cause the power controller to overheat and the smartphone to fail.
Note the state of the USB Type-C connector in the smartphone itself. Dust, pocket pile or contact oxidation can prevent the tight connection, which makes it impossible for the phone to “agree” with the charger to increase current.
☑️ Diagnostics of accessories
Configure the battery parameters in MIUI
Android’s MIUI-enabled operating system doesn’t have a separate “Enable Fast Charging” button, as it’s a hardware-controlled process, but there are software limiters that can block top speeds.
First, go to Settings → Battery, where you need to check whether the power saving or ultra-energy saving mode is activated, which artificially restrict background activity and can reduce charging speed to reduce heat generation.
And you should also pay attention to Charging Optimization, which is learning your habits and can slow down if your phone realizes you're leaving it on charge all night.
If you use your phone frequently while charging, the system can reduce current to compensate for heat from the running screen and processor.Close heavy apps and games to let the device charge faster.
What is night charging optimization?
Effect of temperature on charging speed
Temperature is a critical factor for the lithium polymer batteries installed in the Poco M5.The power controller tightly limits the input current if the sensors detect overheating or, conversely, too low a temperature.
If you charge your phone in a hot room, in direct sunlight, or in a case with poor heat transfer, the rate of replenishment can drop significantly, in which case a high temperature warning may appear on the screen.
- 🌡️ Remove a thick protective case during intensive charging.
- ❄️ Do not place your phone on soft surfaces (sofa, bed) that prevent cooling.
- ☀️ Avoid direct sunlight on the device body.
The optimal temperature for fast charging is between +15 and +25 degrees Celsius, and when it goes beyond that, safety algorithms prioritize battery safety over speed.
💡
If the phone gets hot during use, let it cool for 5-10 minutes before connecting to the network, which will allow you to immediately start the maximum current without thermal restrictions.
Comparison of charging modes and characteristics
Understanding the differences between modes of operation helps diagnose the problem, and the table below shows the main characteristics that Poco M5 owners should focus on.
| Parameter | Standard charging. | Fast Charging (QC 3.0) | Conditions of lockdown |
|---|---|---|---|
| Power | 10W | 18W | Low temperature |
| Tension. | 5 volts. | 9-12 volts | The port is polluted |
| Time to 100% | ~3 hours | ~1.5 hours | Screenworking |
| Heat generation | Minimum | Medium/High | Direct sunlight |
As you can see from the table, the difference in charging time is significant, so if your phone is charging for about three hours, then the fast charging mode is not activated.
The lock can also occur due to software failures, sometimes helping a simple reboot of the device, which resets the errors of the power controller and allows you to re-initiate the fast charging protocol.
Programmatic failure and calibration
Sometimes the problem is that the charge level is not displayed correctly or the power management drivers fail, in which case you may need to calibrate the battery or reset the settings.
To calibrate, discharge the phone to zero. Then plug it into the original charger and charge it to 100%, not turning on the screen. After reaching 100%, hold on charging for another 30-60 minutes.
If the software failure is severe, you can try resetting your network and connections, although it rarely affects charging directly. A more radical method is to reset all settings to factory settings, but this requires prior data backup.
⚠️ Warning: Full Hard Reset will delete all your data, photos and contacts. be sure to back up before starting the procedure.
Also check for system updates. Xiaomi engineers regularly release patches that improve charging algorithms and fix accessories-defining bugs.
💡
Regular firmware updates to MIUI often contain fixes for the power controller, which can solve the problem of slow charging without replacing hardware.