How to turn off Xiaomi 20000 mAh: all the ways and nuances

Xiaomi's 20,000 mAh superbanks are some of the most popular external batteries due to their capacity and reliability. However, many users are faced with the question: how to turn off the device correctly if it does not have an explicit power button? Unlike smartphones or laptops, where the shutdown is intuitive, there is often confusion with superbanks. Wrong actions can lead to a battery discharge to zero, shortened life or even damaged the controller.

In this article, we will discuss all possible ways to disable Xiaomi Mi Power Bank 20000 mAh (including models). PLM05ZM, PLM06ZM, PLM12ZM And other modifications, explain why the device can not turn off automatically, and give recommendations for safe storage, and you will learn what to do if the superbank "hangs" or stops responding to buttons.

Important: the shutdown procedure depends on the firmware version and hardware revision, and if your superbank is released after 2021, it may change the power management algorithm, and we have taken into account all the nuances in the instructions below.

Why does Xiaomi’s 20000 mAh superbank not turn off automatically?

Many users mistakenly believe that the external battery should shut down itself immediately after the device is disconnected. In practice, Xiaomi Power Bank 20000 mAh behaves differently - for good reason:

• 🔋 Energy-saving mode: The device goes into hibernation 30 to 60 seconds after the load is turned off, but it doesn't turn off completely. This is for convenience: when you plug it in, charging will start instantly, without pressing the buttons.
• 🔄 Controller, a microcontroller inside the power bank, which monitors the charge level and temperature continuously, and a complete power outage can reset the power.
• ⚡ Even when the lithium-ion batteries are turned off, they lose ~2 to 5 percent charge per month, and the manufacturer minimizes this effect by keeping the device in low-power mode.

If your superbank discharges too quickly in "sleeping" mode (more than 10% in a month), it may indicate a malfunction. PLM05ZM and PLM06ZM Up to 2019, the firmware had a bug that led to increased self-discharge - it was eliminated in later revisions.

⚠️ Warning: Do not store the overbank in a discharged state (below 20%) for more than 2 weeks.This can lead to deep discharge and battery failure.

Method 1: Standard button-off (for most models)

The basic disabling method is suitable for all versions of Xiaomi Mi Power Bank 20000 mAh, except for the earliest (2016-2017).

1. Disconnect all cables from USB-port.
2. Find the on/off button (usually located on the end of the case next to the indicators).
3. Press and hold the button for 5-8 seconds until all LEDs go out.

If the indicators flash or light up in a different sequence, it could mean:

• 🔴 One long signal. + blinking – low charge (less than 10%).
• 🟢 Two blinks – the device is overheated (let it cool for 10-15 minutes).
• 🟡 Three blinks - Controller error (reset required).

In some models (for example, PLM12ZM) The button can be touch-sensitive, in which case a short press (1-2 seconds) is enough to put the device in standby mode, and a full shutdown occurs automatically after 1-2 minutes.

⚠️ Warning: Do not use metal objects to press a button, this can damage the sensor or body. If the button falls, carefully clean it with a soft brush.

Method 2: Forced shutdown when “hanging”

If the overbank does not respond to the hold of the button, flashes chaotically or does not turn off at all, this may be due to:

• 🔌 Short-circuit in USB-port (check for debris or moisture).
• 🔄 Controller firmware failure (often after deep discharge).
• 🔋 Battery malfunction (blown or critical 0% charge).

To force shutdown, follow the following steps:

1. Turn off all cables.


2 Hold the power button for 15-20 seconds (until completely reset).




3. If the indicators are not turned off, connect the overbank to the charger (5V/2A) for 10 minutes, then repeat the hold of the button.




4.For models with Quick Charge (e.g. PLM09ZM), use the original Xiaomi cable - some rod cables block reset.

If these actions didn't help, there may have been a failure in the controller's nonvolatile memory, in which case only a full discharge would help. + charging:

• 🔋 Discharge the overbank to 0% (plug the load, for example, the lamp on the 5W).
• ⚡ Charge up to 100% with the original adapter (at least 10 hours).
• 🔄 Repeat the shutdown attempt.

Method 3: Turn off via mobile app (for smart models)

New versions of Xiaomi superbanks (for example, Mi Smart Power Bank 20000 mAh with Bluetooth support) can be controlled through the official Mi Home app.

1. Connect the verbank to the application (instructions in the section "Add device").
2. Go to the Devices. → Yours is a verbank. → Settings.
3. Select the option to turn off or sleep mode.

Advantages of this method:

• 📱 Remote control (no need to physically press buttons).
• 📊 Monitoring of the charge level and temperature in real time.
• 🔄 The ability to set up automatic shutdown on schedule.

Note that the overbank must have a charge of at least 15% to function, and that at a low level, the application may not display the device on the network.

💡

If your superbank doesn’t connect to the Mi Home, try resetting it to factory settings: hold the power button for 10 seconds, then plug in to charge and try again to sync.

Frequent Shutdown Errors and Their Consequences

Mishandling a superbank can shorten its lifespan or even render it inoperable, and here are the most common mistakes and their consequences:

• 🔌 Disconnection during charging/discharge: A sudden interruption of the process can damage the controller or battery.
• ❄️ Storage in the cold or heat. Optimal temperature - 10-25°C. At 0°C capacity drops by 30%, with +40°C the risk of bloating increases by 3 times.
• 🔋 Long-term storage at 0%. Deep discharge kills lithium-ion batteries. If the overbank has not been used for more than a month, charge it to 40-60%.
• 🔄 Use of non-original cables: Cheap cables can cause the controller to overheat or crash.

If after improperly turning off the overbank stopped turning on, try the following:

1. Connect to the charger for 1-2 hours (even if the indicators do not burn).
2. Try “waking up” the device by plugging in a load (like a smartphone) and holding the power button for 10 seconds.
3. If nothing helps, contact the service center - there may be a failure in the protection chain.

💡

Never disassemble the overbank yourself - there is a lithium-ion battery inside, which can ignite if damaged. Even if the warranty is over, contact Xiaomi's authorized service centers.

How to properly store the turned off superbank?

If you plan to not use the verbank for more than a week, follow these recommendations:

1. Charge or discharge the device to 40-60% (optimum level for long-term storage).
2. Turn it off according to the instructions above.
3. Place in a dry place with a temperature of 15-25°C (for example, in the closet, not on the balcony or window sill).
4. Check the charge level every 3-6 months and recharge if necessary.

For storage for more than 6 months:

• 📦 Use the original packaging or antistatic package.
• 🌡️ Avoid areas with high humidity (bathroom, kitchen).
• 🔋 Do not store near metal objects or other batteries.

If the overbank was stored for more than a year, calibrate the battery before use:

1. Completely discharge it through the load (before automatic shutdown).
2. Charge up to 100% with the original adapter (at least 8 hours).
3. Repeat the cycle 2-3 times.

⚠️ Warning: If after long storage, the overbank does not turn on or discharges quickly, do not use it - this is a sign of battery degradation.

Comparison with other brands: how do the superbanks turn off?

For comparison, consider how the shutdown of Xiaomi competitors is implemented:

As you can see, Xiaomi offers one of the most flexible controls, especially in newer Bluetooth models, but some competitors (such as Anker) have more reliable automatic shutdowns.

FAQ: Frequent questions about turning off Xiaomi's superbank 20000 mAh