This lithium-ion battery is compatible with the following Samsung models : SGH-t219 / t219 SGH-t239 / t239 SGH-t249 / t249 SGH-t259 / t259 Specifications : Rechargeable lithium-ion battery. Capacity : 700 mAH, 3.7V Talk time : up to 110 mins. Standby time : up to 55 hrs. Gives your phone the power to keep on fulfilling your communication needs. Perfect as a handy extra or replacement battery.