Battery type: Li-ion;Voltage: 7.4V;Large capacity: 52Wh VFV59, W57CV, 0W57CV, WD52H, GVD76, PT1 X01 For DELL Latitude E7240 E7250. Protects functions against incorrect voltages, short circuits and internal overheating.Category A cells ensure fast charging and low energy consumption. All products are CE / RoHS certified by reputable, qualified and accredited testing laboratories.100% compatible with the original battery.