Mugen Power LG G4 Double Juice with Wireless Charge NFC Android Pay Fast Charge 6200mAh Extended Battery Non-Slip Better Hand Grip Back Cover [H815, H812, H810, H811] (Drak Grey) Original Battery Capacity: 3000mAh ,Mugen Power Extended Capacity: 6200mAh NFC & QI Wireless Charging supported [Do not support fpr PMA AT&T wireless charging] Back cover kickstand embedded Premium Urethane Coating: Prevent discoloration 12 Months Warranty