EZOPower 5400mAh Replacement Extended NFC Battery with Black Door Cover + Battery Charger for Samsung Galaxy S IV / S4 GT-i9500 (AT&T, T-Mobile, Sprint, Verizon) Android Phone - NFC Enable for S BEAM AND Google Wallet Battery type: Lithium-Ion. Battery capacity: 5400mAh **NFC - Near Field Communication Enable For Google Wallet and S Beam Function No memory loss effect. Black battery door included. Integrated microchip prevents overcharging & lengthens battery life Package Includes: 1x EZOPower NFC Extended Battery with Black Door, 1x Standard Battery Charger