Your iPhone XS or XR battery case could be due a free replacement from Apple - The Verge
Pxwaxpy Battery Case for iPhone XR, 6800mAh Portable Protective Charging Case for iPhone XR Extended Rechargeable Charger Case B
Apple iPhone XR Smart Battery Case Refurbished White | Dressinn
Official Apple Smart Battery Case for iPhone XR - White - Walmart.com
Amazon.com: Trswyop Battery Case for iPhone XR, 6800mAh Portable Charging Case for iPhone XR Rechargeable Backup External Battery Pack Extended Battery Protective Charger Case(6.1inch)-Black : Cell Phones & Accessories
Apple iPhone XR battery Housing cover frame Black (Equipped) - iPhone XR - iPhone, Apple, Spare parts - Spare parts for everyone
Apple Smart Battery Case for iPhone review: great, but not for everyone - The Verge
Apple Smart Battery Case for iPhone XS, XS Max, XR review | Macworld
iPhone XR Waterproof Battery Case | iPhone XR Charging Case – punkcase
Hands on with Apple's new Smart Battery Case for iPhone XS, XS Max, and XR | AppleInsider
Alpatronix BXXr 5000mAh iPhone XR Qi Wireless Battery Charging Case
Best Buy: mophie Juice Pack access External Battery Case with Wireless Charging for Apple® iPhone® XR Black 401002821
NUNET Detachable Battery Case for iPhone Xs/X /XR /XS MAX Nucharger Po – Nuvending.com
Apple Smart Battery Case for iPhone XR - Black - White Parts only | eBay
Belt Clip Holster Compatible with Apple Smart Battery Case (for iPhone – Beltron.co
iPhone XS, XS Max, and XR Smart Battery Case review: Power for days | Mashable
5000 Mah For Iphone Xr Battery Case Smart Audio Output Battery Charger Cover Power Bank For Iphone Xr Battery Case - Battery Charger Cases - AliExpress
Smart Battery Case Replacement Program for iPhone XS, iPhone XS Max, and iPhone XR - Apple Support