Price: $39.99 - $31.44
(as of Dec 04, 2025 08:20:10 UTC – Details)
Product description
1 Charge
2 Recharge
1 Built to Last
2 Cable Storage Slot
3 Battery Indicator
4
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
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Customer Reviews
4.5 out of 5 stars 1,187
4.5 out of 5 stars 2,903
4.6 out of 5 stars 633
4.6 out of 5 stars 1,645
4.5 out of 5 stars 70,807
Price
$31.44$31.44
$29.99$29.99
$26.99$26.99
$22.99$22.99
$21.99$21.99
Size / Weight
4.5 x 2.9 x 1.1in / 11.5oz
4.1 x 2.8 x 1.2in / 11.1oz
4.4 x 2.7 x 0.7in / 6.4oz
4.3 x 2.7 x 0.7in / 6.3oz
4.3 x 2.7 x 0.7in / 6.4oz
Cable Included
Built-in USB-C Cable
Detachable USB-C Cable
Built-in USB-C Cable
Built-in USB-C Cable
Detachable USB-C Cable
Battery Level Display
Digital Display
Digital Display
Digital Display
PawPower 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
1.7h
2h
2h
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.
45W Full-Speed Charging for iPhone 16 & Samsung S25: Delivering up to 45W output, this power bank supports PD, QC, and other fast-charging protocols. Charge your iPhone 16 to 70% in just 25 minutes, or your Samsung S25 Ultra to 80%.
New-Gen Ultra-Compact 20,000mAh: Powered by the industry-first high-density TinyCell battery, this compact power bank defies size limits. Enjoy high capacity without the bulk, perfect for on-the-go convenience.
Built-In USB-C Cable, Grab & Go: Never forget your cable again with the built-in USB-C cable—charge with ultimate convenience.
Recharge Once, Power for a Week: Ideal for travelers and outdoor enthusiasts, the 20,000mAh charges your iPhone 16 up to 4 times. Recharge once and power through the week!
Charge 3 Devices at Once: Low on battery? Charge up to 3 devices simultaneously—your phone, tablet, and more—all at once.
Customers say
Customers find the power bank charges devices quickly, with one noting it went from 51% to full, and appreciate its compact size and built-in USB-C cable. Moreover, the product receives positive feedback for its portability, functionality, and power capacity, with one customer mentioning it can charge multiple phones simultaneously. However, several customers find it quite heavy.
