4000mah NFC Battery for At&t Samsung Galaxy S4 Active Sgh-i537 I537

Works better tha factory. NFC appears to be g2g.

I'm not sure if I may have damage the battery by charging with too high an amperage charger or what, but it seems like it doesn't hold a full charge anymore. It worked great for about a month. Now it doesn't seem like it holds as much of a charge as a regular battery. Much like a hot girlfriend, it was great while it lasted.

Must be defective. Last less time than the the standard battery.

Good product, good price, great sale.

It has done well for me for several months now. I hardly ever even consider whether or not I will have enough battery to get through the day.