Apple has its own smart battery cases for iPhone XS and XR

Engadget ---------- Yes, the rumors and leaks were true -- Apple has a new battery case after a lengthy absence, and it appears to have learned a few lessons in the process. The Smart Battery Case for iPhone XS, XS Max and XR extends your handset's battery to as much as 39 hours of talk time (on the XR), but avoids the ungainly lump from the iPhone 6/6s case that launched in 2015. Instead, there's a more graceful (if still bulky) slope. It supports wireless charging, too, so you don't have to plug in just because you want extra runtime. To learn more click on the picture below to read the article.