Mobile phone battery for nokia BL-4B: 1.Capacity:750mAh 2.standard time:48hours~120hours 3.Cycle time:more than 500 times Suitable for Nokia BL-4B/6111/7370/7373/N76/7500Prism/2760/2630/2660/2505/7088/7070/S5000 1.Model NO. : BL-4C2.Brand Name:DETAKE3.Standard Voltage:3.7V4.Charging limited Voltage:4.2V5.Quality Grade:AAA standard / High6.Weight:0.02kg