The replacement for clevo nv40bat-4-49 battery is specially designed for the original clevo nv40bat-4-49 battery. Warranty 12 months Capacity 49Wh Volts 15.2V Color Black 15.2V, 49Wh Extended Life battery for clevo nv40bat-4-49. The quality of this for clevo nv40bat-4-49 battery is certified as well by RoHS and the CE to name a few.