Specifications: Battery type: Li-ion. Color: Black. Voltage: 7.6V. Capacity: 60Wh/4-Cell. New from Manufacturer Compatible Part Number: K5XWW 6CYH6 71TG4 725KY N18GG 451-BBZC Compatible Models: Replacement for Dell Latitude 13 7389 Series; Replacement for Dell Latitude L3180 Series; Replacement for Dell Latitude 5289 2-in-1 Series; Replacement for Dell N003L7390-C-D1606FTCN N012L7390-C-D1706FTCN; Replacement for Dell Latitude 7390 2-in-1 Series("Not fit for Dell Latitude 7390" ) Security: All ZTHY products are Certified by CE, and UL for safety. Strict guidelines for compatibility, and standards compliance for environmental safety Note: If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10-20% (not 0%), then charge and cycle 3-4 times to wake up the new battery