Apple launched Smart Battery Cases designed for the iPhone XS, XS Max and iPhone XR. It’s designed to give extra battery life for its new iPhones 2018. Priced at $129, it comes in either black or white and it’s same material as Apple’s silicone cases. You might notice extra bump on the back which contains battery pack inside. There’s a lightning connector built into the case connects to the lightning port which is easy for customers to charge it. Each of the Smart Battery Cases features two 1,369mAh battery cells inside run at a higher voltage offering 10.1Wh of energy. It might be worth for iPhone XS customers to have extra battery however iPhone XS Max has plenty of power that might not need one. Let’s take look at the review video with closed caption via YouTube and you can share your opinion about it.