INIU 20000mAh Power Bank, Small 45W PD Fast Charging Portable Charger with Built-in USB C Cable, Flight-Safe Travel External Phone Battery Pack for iPhone 17 16 Pro Max Samsung S25 S26 Google iPad etc

$42.00 USD

~~$42.00 USD~~ $42.00 USD

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Why my power bank provide fewer charges than expect?

Usually an external battery could supply 60%-70% power to other devices. About 30-40% of the battery capacity is lost in circuit heat and voltage conversions.So a fully charged INIU 20000mAh power bank can offer 12000-14000 mAh to your devices.
How to calculate the possible number of charges?

Industry-standard formula: (Power bank capacity × 65%) ÷ Device battery capacity ≈ Number of Charges.

eg. (20,000mAh Powerbank × 0.65) ÷ 3279mAh iPhone14 battery ≈ 4.0 charges
How long does it take to 100% recharge?

It depends on the power of the wall charger used:

27W charger - 3.9 hrs, 15W fast charger - 6.8 hrs.

Note: Please recharge via the USB-C port.
Why doesn’t it charge at max power all the time?

INIU power banks feature a Smart Temperature Monitoring System that adjusts output to prevent overheating. It delivers max power when your device is low, then reduces power to protect your battery and improve efficiency.
Is it allowed on airplanes?

Yes, our 20000mAh power bank meets the regulations of TSA(Transportation Security Administration) for carring board(≤100wh≈27,027mAh).

Comparison

	Smallest 20000mAh 45W	Smallest 20000mAh 22.5W	Slimmest 10000mAh 45W	Slimmest 10000mAh 45W	Slimmest 10000mAh 45W
Customer Reviews	27,806	1,112	21,526	27,806	3,226
Price	$43.99	$51.12	$32.99	$36.99	$36.99
Size / Weight	4.5 x 2.9 x 1.1in / 11.5oz	4.1 x 2.8 x 1.2in / 11.1oz	4.3 x 2.7 x 0.7in / 6.4oz	4.4 x 2.7 x 0.7in / 6.4oz	4.3 x 2.7 x 0.7in / 6.3oz
Cable Included	Built-in USB-C Cable	Detachable USB-C Cable	Detachable USB-C Cable	Built-in USB-C Cable	Built-in USB-C Cable
Battery Level Display	Digital Display	Digital Display	PawPower Display	Digital Display	PawPower Display
For Phone	≈4 Charges	≈4 Charges	≈2 Charges	≈2 Charges	≈2 Charges
For Tablet	≈2 Charges	≈2 Charges	≈1 Charge	≈1 Charge	≈1 Charge
Airline Approved	✔	✔	✔	✔	✔
Recharge Time	3.9h	5.4h	2h	1.7h	2h

30% Smaller, Effortlessly Portable: Leveraging industry-first TinyCell high-density battery technology, we’ve shrunk 20,000mAh into a frame 30% smaller than other power banks of the same capacity. At just 326.1g—the weight of a 330ml can of cola—it slides effortlessly into your crossbody bag.
15 mins Faster with 45W Charging: Stop waiting and start exploring. Our 45W output is 15 minutes faster than traditional 22.5W power banks, boosting an iPhone 17 Pro from 20% to 76% in just 30 minutes—exactly the time it takes to finish an espresso.
2-Day Power, Zero Battery Anxiety: With a massive airline-approved 20,000mAh capacity, this power bank fuels your journey with about 4 full charges for phones or 2 full charges for tablets. From morning commutes to weekend getaways, stay powered and connected without ever being tethered to a wall.
Simplify Your Carry: Never forget your cable again with the built-in braided USB-C cable. Tested for 10,000+ bends, it eliminates tangled wires in your bag. Plus, a built-in flashlight adds extra peace of mind for emergencies.
Charge 3 Devices at Once: Low on battery? Charge up to 3 devices simultaneously—your phone, tablet, and more.
From INIU-the SAFE Fast Charge Pro: Experience the safest charging with over 38 million global users. At INIU, we use only the highest-grade materials, so we do have the confidence to provide an industry-leading 3-Year INIU Care.
WHAT YOU GET: INIU 20000mAh power bank x 1, user manual x 1, and Industry-Leading 3-Year INIU Care, plus Lifetime Technical Support.

› See more product details

Connector type	USB Type A, USB Type C
Brand	INIU
Battery capacity	20000 Milliamp Hours
Colour	Black
Special feature	Built In Cable, Digital Display, Fast Charging, Flashlight, Mini Size, Pocket-size, Ultra Small, Compact Design See more