Why is my power bank providing fewer charges than expected ?

The capacity reduction during charging is due to a 20% to 35% energy loss in the battery cells and conversion circuitry. Therefore, a fully charged iWALK mini Portable Charger offers an estimated 2750mAh to 3500mAh to power devices.

How many times this power bank will charge my iPhone when fully recharged ?

To estimate charges,use this formula (Power Bank Capacity × 0.66) ÷ Device Battery Capacity. For example, an iPhone 15 with a 3,349mAh battery can receive about 0.88 charges from a 4,500mAh power bank (calculated as (4,500mAh × 0.66) ÷ 3,349mAh).

Getting hot when charing, is it normal ?

Our portablle chatger support 20W fast charging for your iPhone, which may cause some warmth,please feel free to use it since this power bank has built-in over-heat protection.

Why does the device become hot when used ?

When the power of the mobile phone or power bank is less than 30%, the power will reach the maximum value and the temperature of the product will rise rapidly and significantly. This is normal.

Which iPhone models this will be compatible with

iPhone 15, iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max, iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max, iPhone 17, iPhone 17 Plus, iPhone 17 Pro, iPhone 17 Pro Max

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iWALK Portable Charger for iPhone 17/16/15 USB-C Small Power Bank 20W 4,500mAh Fast Charging Battery Pack Compatible with iPhone 15/16/17 Plus/17 Pro/17 Pro Max, Samsung Galaxy S25/S24/S23 Android

iWALK Portable Charger for iPhone 17/16/15 USB-C Small Power Bank 20W 4,500mAh Fast Charging Battery Pack Compatible with iPhone 15/16/17 Plus/17 Pro/17 Pro Max, Samsung Galaxy S25/S24/S23 Android

Product ID: 558999108

Details

Battery Capacity
4500 Milliamp
Brand
iWALK
Color
Black
Connector Type
USB Type C
Special Feature
Fast Charging

⚡20W Fast Charge

🔋4500mAh Capacity

🔌Dual USB-C Ports

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$61.22

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power Up Anywhere, Anytime — Because Running Out Isn’t an Option

CORDLESS CONVENIENCE - Built-in USB-C connector means zero cable clutter—just plug and power up anywhere.
SAFE SMART CHARGING - Advanced heat reduction and short circuit protection keep your devices safe while powering your busy lifestyle.
LIGHTNING FAST 20 W OUTPUT - Charge your iPhone 15/16/17 from zero to 50% in just 30 minutes—stay powered without pause.
ULTRA COMPACT LIPSTICK SIZE - Slip it in your pocket or purse effortlessly—your ultimate travel and daily essential.
DUAL USB C PORTS WITH PASS THROUGH - Simultaneously charge your power bank and device with high-speed 18W input/output—no downtime.

The iWALK Portable Charger packs a punch with 20W fast charging and a 4,500mAh battery in a sleek, ultra-compact design. Compatible with the latest iPhone 15/16/17 series and top Android models, it features dual USB-C ports for simultaneous charging and pass-through technology. Lightweight and cordless, it’s engineered with smart heat management and safety protections, making it the perfect on-the-go power companion for professionals who demand speed, style, and reliability.

Specifications

ASIN	B0CH84RRF3
Amperage	1.5 Amps
Antenna Location	Phone
Battery Capacity	4500 Milliamp Hours
Battery Cell Type	Lithium Ion
Battery Weight	1 Pounds
Best Sellers Rank	#222 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #28 in Cell Phone Portable Power Banks
Brand	iWALK
Color	Black
Compatible Devices	Apple Watch, iPad Pro/Air Serice, Google Pixel 6/ 5, Nexus 6/ 5, LG, Moto, OnePlus 9/ 9 pro, Xiaomi, Samung S22/ S23/ S24 Series, Samsung Note20/ Note20 Ultra, Galaxy Z Flip5/ 4, Z Fold5/ 4, iPhone 16/15 series ( iPhone 16,16 Plus,16Pro,16 Pro Max), iPhone 17 series ( iPhone 15,15 Plus,15 Pro,15 Pro Max)
Compatible Phone Models	iPhone 15/iPhone 15 Pro/iPhone 15 Plus/iPhone 15 Pro Max
Connector Type	USB Type C
Customer Reviews	4.3 4.3 out of 5 stars (13,096)
Is Electric	Yes
Is Product Cordless	Yes
Item Dimensions	0.39 x 0.39 x 0.39 inches
Item Dimensions L x W x Thickness	3.1"L x 1"W x 2"Th
Manufacturer	U2O GLOBAL CO.,LTD
Model Name	DBL4500NC
Model Number	DBL4500NC
Number of Batteries	1 Lithium Ion batteries required. (included)
Number of Items	1
Number of Outlets	1
Number of Ports	2
Other Special Features of the Product	Fast Charging, LED Indicator Lights, Lightweight, Pocket Size, Short Circuit Protection
Portable	Yes
Power Source	AC
Reusability	Rechargeable
Voltage	3.6 Volts (AC)

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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.

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