BTYAVG1 Battery for Dell Alienware M18X R1 R2 X7YGK 14.8V 96Wh -  Compatible Part Numbers: BTYAVG1, X7YGK, Compatible Model Numbers: Dell Alienware M18x, Alienware M18x R1, Alienware M18x R2 - Battery Type: Li-ion, Battery Volt: 14.8V, Capacity: 14.8V 96W