Galaxy Note 4 Edge Battery Case, 2015 Newest 5200mAh Ultra Slim Rechargeable Extended Battery Case for Samsung Galaxy Note 4 Edge, Backup External Battery Charger Case, Portable Backup Power Bank Case with Kickstand and Faux Leather Flip Cover (Black)

Case charges significantly slower than casual use drains battery. Added an hour to daily usage. Can not charge phone and case simultaneously, unless you count taking the phone out and using two chargers. Regret purchase.

Basically does the job and the only flip cover charging case I found to fit the Galaxy Note (4) Edge. However, it has a couple quirks. One reviewer of one model (there's a regular and a high capacity version) said it sometimes randomly stops charging the phone, but can be revived by connecting a charger briefly to the micro USB charging port. I've experienced this a few times, but as I always carry around an extra external mobile charger, this doesn't bother me much. The more challenging issue is that you can either charge the case or the phone, but not both, even serially. So overnight charging is a bit of a challenge (as I want both fully charged when I leave home in the morning). I've found that if I charge the phone in the evening, charge the case overnight, and top off the phone charge after I wake up in the morning, I can come pretty close.

It'll either charge the case or the telephone but never both. If I forget to push the button on the case to charge the phone, the phone battery is almost dead in the morning. Also the leather on the flap is separating on both to and bottom.