Apple Smart Battery Case Review: iPhone XS/Max & XR design, wireless charging, still bulky [Video] - 9to5Mac
Apple's new Smart Battery Case fits an iPhone X, but charging requires iOS 12.1.3
iPhone XS Smart Battery Case - Really...$129? - YouTube
Amazon.com: BELTRON Belt Clip Holster Compatible with Apple Smart Battery Case for iPhone Xs - (Belt Clip ONLY, Smart Battery Case NOT Included) : Cell Phones & Accessories