Xiaomi 33W Power Bank 20000mAh, 33 W, Integrated USB-C Cable

Xiaomi 33W Power Bank 20000mAh, 33 W, Integrated USB-C Cable

The Xiaomi 33W Power Bank 20000mAh is a high-capacity portable power bank with an integrated USB-C cable for charging smartphones, tablets, earphones, smart bands and other compatible USB-powered devices. In addition to the built-in cable, it provides separate USB-C and USB-A ports, while both the integrated USB-C cable and the USB-C port can be used to recharge the power bank itself. Maximum output power is 33 W, with power bank charging supported at up to 30 W.

Key specifications:
20,000 mAh cell capacity • 74 Wh rated battery energy • 12,000 mAh rated capacity at 5 V / 3 A • up to 33 W output • up to 30 W input • integrated USB-C cable

Key features

• 20,000 mAh cell capacity – two 10,000 mAh cells provide a large energy reserve for travel and repeated charging of mobile devices.
• Up to 33 W output – the integrated USB-C cable and USB-C port support output of up to 33 W when the connected device is compatible with the corresponding voltage and current mode.
• Up to 30 W power bank charging – the built-in USB-C cable or USB-C port supports input up to 12 V / 2.5 A.
• Integrated USB-C cable – reduces the need to carry a separate USB-C cable and works both as an input and an output.
• Three outputs – the integrated USB-C cable, USB-C port and USB-A port allow up to three devices to be connected simultaneously.
• Low-current charging mode – intended for low-power devices such as Bluetooth earphones and smart bands. It is activated by double-pressing the battery level check button and automatically exits after 2 hours.
• Automatic charging and discharging detection – the power bank automatically detects connected devices; the battery level check button is not the main power switch.
• Four LED indicators – provide a quick indication of remaining battery level and charging status.
• Multiple electrical protection functions – Xiaomi specifies protection against high temperature, short circuits, excessive input/output voltage and current, overcharging and excessive discharge.
• 74 Wh rated battery energy – below the 100 Wh threshold referred to by Xiaomi for air travel; airline-specific rules should still be checked before travelling.

Applications

The power bank is intended for everyday charging of mobile devices at home, at work and while travelling. It can be used with compatible smartphones, tablets, Bluetooth earphones, smart bands and other USB-powered electronics.

Its large energy reserve is particularly useful when mains power is unavailable, while the integrated USB-C cable reduces the need to carry additional accessories.

Compatibility and limitations

The power bank provides an integrated USB-C cable, a separate USB-C port and a USB-A port. Both the integrated USB-C cable and the USB-C port operate as input and output interfaces.

The maximum 33 W output depends on the voltage and current modes supported by the connected device. It should therefore not be assumed that every smartphone or other device will charge at 33 W.

When several outputs are used simultaneously, Xiaomi specifies a multi-port output of 5 V / 3 A. The 33 W maximum rating therefore does not mean that 33 W is available independently from each of the three outputs at the same time.

Xiaomi's official specification for this model does not separately state support for USB Power Delivery (PD), Quick Charge (QC) or other named fast-charging protocols; therefore such protocol support is not claimed in this description.

Technical specifications

Parameter	Specification
Model	PB2030MI
Product type	Portable power bank
Battery type	Lithium-ion battery
Cell configuration	20,000 mAh (10,000 mAh × 2)
Cell rating	7.4 V / 10,000 mAh
Rated battery energy	74 Wh
Typical battery energy	75.48 Wh
Rated output capacity	12,000 mAh at 5 V / 3 A
Inputs	Integrated USB-C cable and USB-C port
Outputs	Integrated USB-C cable, USB-C, USB-A
Maximum output power	33 W
Maximum input power	30 W
Integrated USB-C cable input (IN1)	5 V ⎓ 3 A; 9 V ⎓ 2.5 A; 12 V ⎓ 2.5 A
USB-C input (IN2)	5 V ⎓ 3 A; 9 V ⎓ 2.5 A; 12 V ⎓ 2.5 A
Integrated USB-C cable output (OUT1)	5 V ⎓ 3 A; 9 V ⎓ 3 A; 11 V ⎓ 3 A; 12 V ⎓ 2.5 A; 15 V ⎓ 2 A; 20 V ⎓ 1.5 A max.
USB-C output (OUT2)	5 V ⎓ 3 A; 9 V ⎓ 3 A; 11 V ⎓ 3 A; 12 V ⎓ 2.5 A; 15 V ⎓ 2 A; 20 V ⎓ 1.5 A max.
USB-A output (OUT3)	5 V ⎓ 3 A; 9 V ⎓ 2.23 A; 10 V ⎓ 2.25 A; 12 V ⎓ 1.67 A max.
Multi-port output	5 V ⎓ 3 A
Operating temperature	5–35 °C
Charging time	Approx. 9.5 h with a 5 V / 2 A charger; approx. 3.6 h with a 12 V / 2.5 A charger
Dimensions	127 × 70.5 × 30.5 mm
Housing materials	PC + ABS
Battery level indication	4 LED indicators
EU directives stated in the Declaration of Conformity	EMCD 2014/30/EU; RoHS 2011/65/EU
Referenced harmonised standards	EN 55032:2015+A11:2020+A1:2020; EN 55035:2017+A11:2020; EN IEC 63000:2018

Design and controls

The housing incorporates the integrated USB-C cable, a separate USB-C port, a USB-A port, a battery level check button and four LED indicators. Xiaomi specifies PC and ABS construction with rounded edges for more comfortable handling.

The battery level button is not an on/off switch. Charging and discharging are detected automatically. When the power bank itself is not being charged, double-pressing the button enables low-current discharge mode.

Important operating and safety information

• Use a charger with suitable specifications that complies with applicable local safety requirements.
• The specified operating temperature is 5–35 °C.
• Do not cover the power bank during charging or discharging; allow adequate heat dissipation.
• Protect the product from liquids, strong impacts, pressure, vibration and heat sources.
• Do not disassemble, puncture or short-circuit the battery.
• Stop using the product if it becomes swollen, deformed, leaks or shows a substantial loss of capacity.
• For long-term storage, Xiaomi recommends a cool, dry location and approximately 50% battery charge.
• When travelling by air, always follow the lithium-battery rules of the relevant airline and airport.

Package contents

• Xiaomi 33W Power Bank 20000mAh with integrated USB-C cable × 1