ZTHY Laptop Battery FV993 (97Whr 11.1V 9-Cell) Compatible for Dell Precision M4600 M4700 M4800 M6600 M6700 M6800 Series Notebook FJJ4W PG6RC V7M28 KJ321 Battery typeLi-ion. Color: Black. Voltage: 11.1V. Capacity: 97Wh /9cell.100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Replace Part Number312-1176 312-1177 312-1178 331-1465 3DJH7 97KRM PG6RC R7PND 0TN1K5 FV993 Compatible ModelsDell Precision M4600 M4700 M4800 M6600 M6700 M6800 WorkStation Series SecurityAll ZTHY products are Certified by CE, FCC for safety. Strict guidelines for compatibility, and standards compliance for environment safety. ZTHY Laptop Battery Return PolicyRest assured with 30 days Refund and 12 months Replacement,also get our friendly customer service.