This wireless charging shell is not (or very rarely) recognized by my 2 chargers that I use with my otherwise DAILY NEXUS-5 ...
Also the only time the shell has decided to please recharge the battery, it was very slow (about 15% in 1 hour).
My Nexus 5 is much faster recharge (about 100% in 1 hour).
Very very disappointed with the quality SAMSUNG nickname ... (pro camera, no choice ...)
GRRRR