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:

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.

Unit Count	1.0 Count
Item Dimensions L x W x Thickness	3.1"L x 1"W x 1.5"Th
Item Weight	6.07 ounces
Battery Cell Type	Lithium Ion
Color	White
Recommended Uses For Product	Travel, Phone, Tablet
Is Product Cordless	Yes
Compatible Devices	Apple Watch, iPad Pro/Air Serice, iPhone 15 series ( iPhone 15,15 Plus,15 Pro,15 Pro Max), Google Pixel 6/ 5, Nexus 6/ 5, LG, Moto, OnePlus 9/ 9 pro, Xiaomi, iPhone 16 series ( iPhone 16,16 Plus,16Pro,16 Pro Max), Samsung Galaxy S24/S23/S22/S21/S20/S10/S9 Series , Samsung Note20/Note20 Ultra, Galaxy Z Flip5/ 4, Z Fold5/ 4
Is Electric	Yes
Portable	Yes
Voltage	3.6 Volts (AC)
Power Source	AC
Number of Ports	1
Connector Type Used on Cable	USB Type C
Battery Capacity	4500 Milliamp Hours
Additional Features	LED Indicator Lights, Short Circuit Protection, Lightweight, Pocket Size, Fast Charging

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

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