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 20W charger - 5.4 hrs, 15W fast charger - 6.6 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).

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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INIU 20000mAh Power Bank, Smallest Fast Charging 22.5W Portable Charger, USB C In&Out Mini Powerbank, Phone Battery Pack for iPhone 17 16 15 Pro Samsung S25 S24 Airpods iPad etc Travel & Camping

INIU 20000mAh Power Bank, Smallest Fast Charging 22.5W Portable Charger, USB C In&Out Mini Powerbank, Phone Battery Pack for iPhone 17 16 15 Pro Samsung S25 S24 Airpods iPad etc Travel & Camping

Product ID: 654333333

Details

Battery capacity
20000
Brand
INIU
Colour
Black
Connector type
Output:
Special feature
Digital Fast

⚡22.5W fast charge

👜ultra-compact pocket size

🔋20000mAh mega capacity

Description

🔌 Power that fits your fast-paced life—anywhere, anytime.

POWER UP IN A FLASH - Charge up to 75% in just 25 minutes with blazing 22.5W fast charging—because your time is money.
POCKET SIZED POWERHOUSE - The smallest 20,000mAh power bank on the market, designed to slip effortlessly into your daily carry.
TRIPLE PORT VERSATILITY - Dual USB-C in/out plus USB-A ports let you power multiple devices simultaneously—stay connected everywhere.
TRAVEL READY TSA APPROVED - Compact and lightweight, perfect for flights, camping, and on-the-go hustle without the bulk.
SMART DIGITAL DISPLAY DURABLE DESIGN - Real-time battery status at a glance plus a clever cable clip handle for ultimate convenience and style.

The INIU 20000mAh Power Bank is the market’s smallest high-capacity portable charger, delivering rapid 22.5W fast charging through dual USB-C and USB-A ports. Compact and lightweight at just 320 grams, it easily fits in pockets or bags, making it ideal for travel and outdoor use. With a smart digital display and a 3-year warranty, it’s engineered for professionals who demand reliable, on-the-go power for multiple devices including the latest iPhones, Samsung Galaxy models, AirPods, and more.

Specifications

ASIN	B0DCNC4N6F
Antenna Location	For ALL 【iPhone】iPhone 17, 17 Plus, 17 Pro, 17 Pro Max, iPhone 16, 16 Plus, 16 Pro, 16 Pro Max, iPhone 15, 15 Plus, 15 Pro, 15 Pro Max, iPhone 14, 14 Plus, 14 Pro, 14 Pro Max, iPhone13 Pro, iPhone 13 Pro Max, iPhone 13 mini, iPhone 13, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 12 mini, iPhone 12, iPhone 11 Pro, iPhone 11 Pro Max, iPhone 11, iPhone SE (2nd generation), iPhone XS, iPhone XS Max, iPho…
Battery Capacity	20000 milliamp_hours
Battery Cell Type	Lithium Polymer
Battery Weight	320 Grams
Best Sellers Rank	453 in Mobile Phone Portable Power Banks
Brand Name	INIU
Colour	Black
Compatible Devices	For ALL 【iPhone】iPhone 17, 17 Plus, 17 Pro, 17 Pro Max, iPhone 16, 16 Plus, 16 Pro, 16 Pro Max, 15, 15 Plus, 15 Pro, 15 Pro Max, iPhone 14, 14 Plus, 14 Pro, 14 Pro Max, iPhone13 Pro, iPhone 13 Pro Max, iPhone 13 mini, iPhone 13, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 12 mini, iPhone 12, iPhone 11 Pro, iPhone 11 Pro Max, iPhone 11, iPhone SE (2nd generation), iPhone XS, iPhone XS Max, iPhone XR, …
Connector Type	Output: USB-C2+USB-A1
Customer Reviews	4.6 4.6 out of 5 stars (368)
Included Components	INIU Power Bank * 1, USB C Cable * 1, User Manual * 1
Item Dimensions	10.4 x 7 x 2.9 centimetres
Item Dimensions L x W x Thickness	10.4L x 7W x 2.9Th centimetres
Item Weight	313.5 Grams
Manufacturer	Shenzhen Topstar Industry Co.,Ltd.
Manufacturer Part Number	P51
Model Number	P51-E2
Number of Batteries	1 Lithium Polymer batteries required. (included)
Number of Items	1
Number of Ports	3
Other Special Features of the Product	Digital Display, Fast Charging, Flashlight, Lightweight, Pocket Size
Output Wattage	22.5 Watts
Portable	Yes
Power Source	Corded Electric
Product Warranty	3 Years Warranty
Reusability	Rechargeable
Unit Count	48.0 count
Warranty Type	Limited

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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