Samsung Original Genuine OEM Spare 2600 mAh Replacement Battery for Samsung Galaxy S4 - Non-Retail Packaging - Silver (Discontinued by Manufacturer) Guaranteed brand new product when purchased from Amazon.com (ships and sold by amazon.com) See description for all compatible models Battery Specs. Capacity: 2600mAh. Battery type: Lithium Ion, Voltage: 3.8V Li-ion. This battery is equipped with an NFC antenna, allowing your handset to communicate with other devices and accessories equipped with NFC technology. Guaranteed brand new product when purchased from Amazon.com (ships and sold by amazon.com) ^See description for all compatible models ^Battery Specs. Capacity: 2600mAh. Battery type: Lithium Ion, Voltage: 3.8V Li-ion. ^This battery is equipped with an NFC antenna, allowing your handset to communicate with other devices and accessories equipped with NFC technology.