Mugen Power - Compatible for Samsung Galaxy S5 Active (G870A) Double Juice Power Replacement 5900mAh Extended Battery | Support NFC | with Non Slippery Back Case Included (Black) Mugen Power Capacity: 5900mAh (Original Battery Capacity: 2800mAh) NFC supported (Android Pay / Google Wallet) Non-Slip Better Hand Grip 12 Months Warranty