Designed by Apple to complement your iPhone, the form of the silicone case fits snugly over the volume buttons, side button and curves of your device without adding bulk. A soft microfiber lining on the inside helps protect your iPhone. On the outside, the silky, soft-touch finish of the silicone exterior feels great in your hand. And you can keep it on all the time, even when you're charging wirelessly.
Alpatronix Battery Case for iPhone 12 Pro & iPhone 12 (6.1 inch), Strong Slim Portable Protective Extended Charging Cover Compatible with Wireless Charging, Apple Pay, CarPlay - BX12 - Black : Cell Phones & Accessories
Smart Battery Case for iPhone 11 review [Video] - 9to5Mac
References in iOS 13.1 point to Smart Battery Cases for iPhone 11, Pro - iPhone Discussions on AppleInsider Forums
LanLuk Battery Case for iPhone 11, 6800mAh Portable Protective Charging Case Compatible with Apple iPhone 11 (6.1inch) Rechargeable Extended Battery Charger Case Backup Power Bank Cover(Black) : Cell Phones & Accessories
This BELTRON Belt Clip Holster is designed and engineered to be compatible with the Apple Smart Battery Case for iPhone 11 6.1 (Smart Battery Case is not included). Quick release latch allows you to easily and securely insert and remove you device single-handedly. Heavy duty 180° rotating belt clip with soft finish is designed to easily adjust for either right and/or left handed use.
Belt Clip Holster Compatible with Apple Smart Battery Case for iPhone 11 - Smart Case Not Included
Apple iPhone 11 Pro Smart Battery Case - Black
Apple Smart Battery Case for iPhone 11 Pro - Black
Does NOT include any accessories of any kind.
Black Apple Smart Battery Case for iPhone 11 Pro 5.8 MWVL2LLA with WEAR & TEAR
Hands-On With Apple's New Smart Battery Case for iPhone 11 Pro Max - MacRumors
Apple Smart Battery Case for iPhone 11 Pro Max - White