https://smile.amazon.com/gp/product/B07BC356C7/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
I bought the Samsung Fast Charger and I'm happy to report that it does work to fully charge the APP. However, as others here have reported with other chargers, it turns off and then back on occasionally. I waited until I had almost 0% charge on the case, placed it on the charger and noticed the charger light turned off a few times but then came back on a few seconds later. It charged to 100% and the charger was still lit up. Maybe my Mophie charger would have turned back on after a few seconds, I was never patient enough. I'll have to pull it from the drawer and give it another chance. Someone here explained the details of how these charge and that makes sense that it fluctuates. As long as they fully charge, I am happy.