I also bought the adapter "RavPower receiver unit for charging S5" that installs in 10 seconds on the back of your battery through the holding sticker. A slight bulge is noted but the hood closes properly anyway.
Full charge in 4/5 h for original battery. This charger is 1.5 A.
Sometimes the signal is lost during charging, but this is often because the mobile phone has moved.
Attention all use or movement of gsm during charging interrupts it!