Hyperion Samsung Galaxy S4 S IV SIV Extended Battery + White Back Cover (Compatible With ALL Samsung Galaxy S 4 Models) NOW WITH NFC [18 Month Warranty] Extend your talk time on your Samsung Galaxy S4 with Hyperion Extended Batteries (Compatible with All US and International Versions). 5200 mAh Battery Capacity (with White Extended Back Cover). Batteries use "A" Grade Lithium Ion Cells. Now with NFC / Google Wallet Capabilities! Distributed by Hyperion Electronics Accessories. 18 Month Money Back/Replacement Guarantee. Shipping same or next business day!