This lithium Ion battery is compatible with the following Samsung models: SCH-r500 / Hue SGH-t519 / t519. SGH-t729 / Blast. SPH-m520 / m520.Specifications : Rechargeable Lithium-Ion battery. Capacity : 650 mAH, 3.7V. Talk Time up to : 110 mins. Standby Time up to: 55 hrs.