Tech Specs & 100% New ProductsModel: 7WNW1 Voltage: 11.4V Capacity: 51Wh/ 4342mAh 6-cell Battery type: Li-ion (We only use grade A battery cells that provide up to 500 recharge cycles over the life of the battery.) Compatible Part Number7WNW1 GK3D3 DMF8C DMF0C DMF8C 6NNCF DP3KF 0DMF8C 0GK3D3 451-BCHV Replacement For LaptopFor Dell Latitude 5424 Rugged Extreme;Latitude 5420 Rugged Extreme;Latitude 7424 Rugged Extreme Series;Dell P85G P86G P85G001 P86G001 SecurityAll Mobik products are certified by UL / CE / FCC / RoHS for safety. Were so confident in the performance of our replacement laptop batteries, strict guidelines for compatibility, strict quality control standards and standards compliance for safety. (including short circuit, overheat, and overload protections.)