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

Iwalk Portable Charger Small Power Bank 20w 4 500mah Fast

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Description

⚡ Power in Your Pocket: Fast, Compact, and Always Ready

SAFE COOL CHARGING TECH - Built-in overheat and short circuit protection keeps your devices safe and your mind at ease.
ULTRA COMPACT LIPSTICK SIZE - Slip it effortlessly into your pocket or purse for on-the-go power without the bulk.
BROAD COMPATIBILITY SPECTRUM - Seamlessly powers iPhone 15-17 series, Samsung Galaxy S20-S25, and more—one charger for all your essentials.
CHARGE UP TO 50 IN 30 MINUTES - Experience rapid power boosts with 20W fast charging—never miss a beat during your busy day.
DUAL USB C PORTS WITH PASS THROUGH - Simultaneously charge your devices and the power bank itself—efficiency redefined.

The iWALK Portable Charger is a sleek, lipstick-sized 4500mAh power bank delivering 20W fast charging via dual USB-C ports. Compatible with the latest iPhone 15-17 series and major Android devices, it offers quick, safe, and convenient on-the-go charging with built-in protections and pass-through technology.

Specifications

ASIN	B0CH829X5R
Antenna Location	Phone
Battery Capacity	4500 Milliamp Hours
Battery Cell Type	Lithium Ion
Battery Weight	1 Pounds
Best Sellers Rank	#287 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #23 in Cell Phone Portable Power Banks
Brand	iWALK
Color	White
Compatible Devices	Apple Watch, iPad Pro/Air Serice, Google Pixel 6/ 5, Nexus 6/ 5, LG, Moto, OnePlus 9/ 9 pro, Xiaomi, Samsung Galaxy S24/S23/S22/S21/S20/S10/S9 Series , Samsung Note20/Note20 Ultra, Galaxy Z Flip5/ 4, Z Fold5/ 4, iPhone 16/15 series ( iPhone 16,16 Plus,16Pro,16 Pro Max,15Plus,15Pro), iPhone 17 series ( iPhone 17,17 Plus,17 Pro,17 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 out of 5 stars 12,930 Reviews
Is Electric	Yes
Is Product Cordless	Yes
Item Dimensions	3.1 x 1 x 1.5 inches
Item Dimensions L x W x Thickness	3.1"L x 1"W x 1.5"Th
Item Weight	6.07 ounces
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 Ports	1
Other Special Features of the Product	Fast Charging, LED Indicator Lights, Lightweight, Pocket Size, Short Circuit Protection
Portable	Yes
Power Source	AC
Reusability	Rechargeable
Special Feature	Fast Charging, LED Indicator Lights, Lightweight, Pocket Size, Short Circuit Protection
Unit Count	1.0 Count
Voltage	3.6 Volts (AC)

Reviews

F**A

28.04.2026

J**N

27.03.2026

A**R

22.04.2026

P**G

22.02.2026

M**E

26.03.2026

A**S

18.04.2026

A**R

30.04.2026

K**R

19.03.2026

M**S

13.01.2025

L**A

18.09.2025

I**A

18.12.2022

R**O

16.01.2023

C**N

22.01.2026

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TrustScore 4.5 | 7,300+ reviews

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Fantastic experience overall. Will recommend to friends and family.

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iWALK Portable Charger Small Power Bank 20W 4,500mAh Fast Charging Battery Pack

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