When you use the mophie juice pack Galaxy S9+ Battery Case, you don’t have to worry about running out of battery. This juice pack battery case will give you more power whenever you need it. Whether you charge with the case or power up wirelessly, you have flexibility. This battery case works with Qi wireless systems, including those commonly found in cafes and airports. So you don’t have to search around for the perfect compatible charging pad. Because this battery case has a 2,070 mAh battery, it can extend your phone’s life for up to 35 hours. That allows you to get a solid weekend of playtime in before needing to recharge. Plus, even though this power bank case gives you on-demand power, it still feels like a slim Galaxy S9+ case.