High-Capacity Gaming Battery for Dell Alienware M15/M17 R1 and G5/G7 Gaming Laptops Power your Dell Alienware M15 R1, M17 R1, or Dell G5/G7 gaming laptop with this premium 90Wh Li-Polymer replacement battery. Specifically engineered for high-performance gaming systems, this XRGXX compatible battery delivers extended gaming sessions and reliable power for demanding applications. Features robust 11.4V output and high-capacity 7500mAh in an advanced 6-cell design.