Apple's Smart Battery Case for iPhone XS and XS Max: Review in progress - CNET
Exclusive: First look at unreleased Apple Smart Battery Case for iPhone XS, three models and 2018 release possible - 9to5Mac
The Best Battery Cases For iPhone X and iPhone XS in 2020
Amazon.com: MAXBEAR Battery Case for iPhone Xs Max, Upgraded 10000mAh Slim Portable Protective Charging Case Compatible with iPhone Xs Max (6.5 inch) Rechargeable Battery Pack Charger Case (Blue) : Cell Phones &
Amazon.com: Feob Battery Case for iPhone Xs/X, Rechargeable 6500mAh Portable Charging Case Extended Battery Pack Cover Power Bank Charger Case for iPhone Xs/X[5.8 inch]-Black : Cell Phones & Accessories