Product Review

Lonlif iPhone XS Max Battery Case Extended Battery Protective Portable Charger Case is engineered specifically for iPhone XS Max to provide you longer battery life and more protection.

Pros:
Provides 120% extra battery life for your iPhone XS Max.
100% compatible with iOS 12, and future iOS software updates.
No excessive bulk and compact design for portability, and fits easily in your hand or pocket.
Allow you to sync the data from your iPhone XS Max to your PC and charge your phone without taking the battery case off.
This battery case supports iPhone earphones, besides, also compatibles with iPhone AirPods or any other wireless Bluetooth headphone accessories.

Note:
CarPlay is NOT supported.
Not compatible with iPhone X / XS / XR.
Our battery case is manual, not automatic.
Wireless charging is NOT supported by this battery case.
This battery case is ONLY compatible with iPhone XS Max.
Please don't put this battery case in damp environment use or near the heat source.
DOES NOT protect the screen, DOES NOT protect the screen, DOES NOT protect the screen. 
Lonlif iPhone XS Max battery case does not support Car Charger, High Voltage or Quick Charge deployed adapters, please use original iPhone charging cable and wall adapter (5V/1A ONLY) to charge the battery case.

How to use the battery case? 
1.Press the button on the back for just 1 second to check remaining power, one LED Indicator will means 25% power.
2.Press for 3 seconds to charge the phone, and press the smart switch for 3 seconds to stop charging the phone.
3.Connect the iPhone's original charging cable with the battery case, then you can charge the battery case. When charging four white LED lights flash to indicate the corresponding power of the battery.