New High Power 2770mAh Extended Slim Battery for Virgin Mobile ZTE Supreme SmartPhone * "Authorized AceSoft Dealer" * Battery type: Li-ion; Voltage: 3.8V; Capacity: 2770mAh * Package includes : AceSoft 2770mAh Rechargeable Li_ion Battery X 1. * Compatible with: ZTE Supreme (Virgin Mobile) * Accessory only, cell phone not included.