Xiaomi Power Bank 20000 45W Boost (Integrated Cable) FAQ

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Frequently Asked QuestionsQ1: What to do if the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) cannot charge or discharge?A: The Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is equipped with a built-in temperature detection function. When the ambient temperature is too high, the protection mechanism is activated, and all charging and discharging functions are temporarily suspended. Q2: How to restore normal operation after the indicator of the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) flashes or an abnormal alarm appears?A: Simple recovery steps are available, and no disassembly is required: disconnect the charging/discharging devices and wait until the Xiaomi Power Bank 20000 45W Boost (Integrated Cable)’s temperature returns to the normal range. Normal operation will then resume automatically.Note:Do not cool the power bank by soaking it in water or placing it in a refrigerator. Q3: Will the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) automatically stop charging after fully charging a phone?A: The Xiaomi Power Bank 20000 45W Boost (Integrated Cable) will not automatically stop charging. The power bank intelligently adjusts charging based on the phone’s requirements, following the phone’s own charging logic. Q4: How is the charging power distributed when the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) outputs through multiple ports simultaneously?A: The actual output power of the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is intelligently distributed according to the connected devices, and it dynamically adjusts based on the remaining battery level of the devices being charged. In most cases, priority is given to the Type-C port output. Q5: How to use the low-current mode of the Xiaomi Power Bank 20000 45W Boost (Integrated Cable)?A: The low-current mode of the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is specially intended for charging devices such as Bluetooth headphones, bands, and watches. The actual output current depends on the load drawn by the connected charging device.To use the low-current mode of the power bank, please refer to the following information:1. All ports on the product automatically detect low-current devices upon connection, requiring no manual operation.2. The power bank will automatically turn off the USB-A port when the output current remains at or below 15 mA for 25 seconds. Q6: How to turn on/off the Xiaomi Power Bank 20000 45W Boost (Integrated Cable)?A: The Xiaomi Power Bank 20000 45W Boost (Integrated Cable) does not support manual power on/off. When connected to a device such as a phone, the power bank automatically begins charging without manual intervention. The power bank's built-in button is only for checking the battery level and does not power it on or off.If no device is connected, the power bank's charging port will not output power. Therefore, there is no need to worry about power consumption. After approximately 25 seconds without a device connected, the power bank will automatically shut down, and the indicator will stop flashing. Q7: How many times can the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) charge a device?A: Since energy conversion loss occurs during the charging process, and different power banks have slightly different energy conversion efficiencies, the number of charges will vary. Therefore, an exact charging count cannot be provided. Q8: What should be considered when using an E-mark chip cable with the USB-A port of the Xiaomi Power Bank 20000 45W Boost (Integrated Cable)?A: When using a 5-pin USB-A to USB-C or USB-A to Lightning cable with an E-mark chip to charge a phone, after the phone is disconnected and the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) enters sleep mode, the power bank may be unable to charge the phone when charging is attempted again. In this case, reconnect the cable to the power bank’s USB-A port. Q9: Why is charging through the USB-A port slow when the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is charging and discharging simultaneously?A: When the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is charging and discharging simultaneously, USB-C input with USB-C output supports 5 V/9 V, while USB-C input with USB-A output supports 5 V/9 V. When USB-C input and both USB-C and USB-A outputs are used simultaneously, only 5 V is supported.The current depends on the power adapter's capability. The power bank draws a maximum of 1 A for charging, while the remaining power is passed through to the connected phone. Q12: Why does the USB-A port of the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) stop and restart when the USB-C device is disconnected?A: When the USB-A and USB-C ports switch from dual-output mode to single-output mode, the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) needs to briefly interrupt charging to renegotiate the charging protocol. Q13: Is it normal for the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) to become warm during normal use?A: Yes, this is normal. Some electrical energy is lost and converted into a small amount of heat during the charging and discharging process, causing the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) to become slightly warm. In high ambient temperatures or high-power usage scenarios, the power bank can become warmer than usual. It is recommended to charge the power bank with an original Xiaomi charger in a well-ventilated area and avoid direct sunlight whenever possible. Q14: Can the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) be taken on a plane?A: Please follow the regulations of the local civil aviation authority. TroubleshootingQ1: Why does the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) only charge an iPhone up to 80%, or sometimes fail to charge?A: The Xiaomi Power Bank 20000 45W Boost (Integrated Cable) can only charge an iPhone to 80% or not charge at all for the following reasons:1. The iPhone has enabled the “Optimized Battery Charging” feature, which slows charging after 80% by switching to trickle input. Path to toggle: [Settings] >> [Battery] >> [Charging] (iPhone 15 models and later) / [Battery Health & Charging] (iPhone 14 models and earlier) >> [Optimized Battery Charging]. You can turn it off and try again.2. Running intensive tasks such as gaming, long video recording, or calls during charging can cause the iPhone to heat up. When the device temperature is high, the iPhone’s protection mechanism activates, slowing or even stopping charging. Q2: Why does the charging indicator keep flashing after the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is fully charged and plugged in again?A: After the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is fully charged and powered on again, it rechecks the battery level. The LED will turn solid to indicate a full charge within about 10 minutes. This is normal. Q3: Is it normal for all four indicators to flash when the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is charging a device?A: Yes. When the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) has 75%-100% battery remaining and is charging a device, all four indicators flashing at the same time is normal. If no external device is connected and all four indicators flash while the power bank itself is charging, this is abnormal. Please contact after-sales service. Q4: Why does the indicator on the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) keep flashing when an Apple data cable is connected, but not when the phone is connected?A: This is normal. Since the Apple data cable contains a chip, it consumes a small amount of current when plugged into the Xiaomi Power Bank 20000 45W Boost (Integrated Cable). If the other end of the cable is not connected to a device, the power bank will intelligently recognize the cable as a "low-current device," causing the indicator to keep flashing. Q5: Why does the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) seem to lose power quickly when charging a phone?A: The Xiaomi Power Bank 20000 45W Boost (Integrated Cable) supports fast charging; it can appear to discharge quickly due to its high output speed. Because of the high output power, fast charging can create the perception of faster battery drain. This is normal. Q6: Why is there a current noise when the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) is charging a phone?A: Different phones have varying current fluctuations during charging. For example, iPhones can experience current fluctuations of several hundred mA. When the fluctuation frequency falls within the human audible range, current noise could be heard. This is normal and does not indicate any risk to the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) or phone. It is safe to use. Q7: Why does a mobile phone fail to reach its advertised charging power when being charged by the Xiaomi Power Bank 20000 45W Boost (Integrated Cable)?A: In some situations, the phone may charge at a lower power or more slowly for the following reasons:1. Different ports on the power bank support different maximum power levels. Use the port with the highest supported power to charge the phone and achieve the maximum charging power.2. As the phone’s temperature or battery level changes, the phone may reduce the voltage and current supplied by the power bank, resulting in lower charging power.3. Fast-charging protocols vary between device brands. The maximum power advertised by some phone models may use a proprietary protocol that is not publicly supported. In this case, the power bank can only support the maximum power available under the compatible open protocol, resulting in lower actual charging power.4. If the power bank itself becomes too hot, it may reduce both charging and discharging power to ensure safe operation. Charging and discharging power will return to normal once the temperature returns to the normal range. Q8: Why doesn’t the charging power reach the Xiaomi Power Bank 20000 45W Boost (Integrated Cable)’s advertised charging power?A: In some situations, the Xiaomi Power Bank 20000 45W Boost (Integrated Cable) could charge at a lower power or more slowly for the following reasons:1. The adapter may have a lower maximum power output, or its charging protocol may not be compatible with the power bank. Use an adapter with a higher power output and a compatible charging protocol.2. Different ports on the power bank support different maximum power levels. Use the port with the highest supported power.3. Different cables support different maximum charging currents. Some lower-spec cables cannot support high-power charging and discharging. Try using a different charging cable.4. If the power bank itself becomes too hot, it may reduce both charging and discharging power to ensure safe operation.