Egoway 7800mAh Laptop Battery for Dell Precision M6400 M6500, fits 8M039 C565C DW554 F678F G102C J012F KR854 P267P 5K145 03M190 WG337 312-0212 312-0868 312-0873 Battery type: Li-Polymer battery; Voltage: 11.1V; Capacity: 7800mAh; 9Cell. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery; CE-/FCC-/RoHS-Certified for safety. Operation time for standard batteries(eg, 4400mah): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. Warranty: 18 - month warranty; 30 days money return guarantee; 24 x 7 email support.