BULL 2F8K3 Replacement New Laptop Battery for Dell Alienware 17 18 18x M17X R5 M18X R3 02F8K3 KJ2PX 0KJ2PX G33TT 0G33TT -18 Months Warranty Battery type: Li-ion; Capacity: 5200mAh/ 77Wh; Voltage: 14.8V Replace for:DELL Alienware 17 18 18x M17X R5 M18X R3 2F8K3 02F8K3 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery.CE FCC Certified for safety,100% OEM compatible Warranty: 18 Months Warranty,30 days money return guarantee!