Type: Battery Compatibility: Compatible Models: Dell Studio 15, Studio 1535, Studio 1536, Studio 1537, Studio 1555, Studio 1557, Studio 1558 Compatible OEM IDs: 3120701, 3120702, A2990667, KM958, KM965, MT264, WU946 Battery Type: 9 Cell Lithium-Ion Battery Voltage: 11.1V Battery Capacity: 7800 mAh Features: Premium grade Japanese or Korean cells High impact ABS and Polycarbonate casing for durability and ruggedness State-of-the-Art printed circuit board (PCB) design to provide accuracy and safety Resistance welded metal plated contacts for maximum performance Optimally rated charge and discharge characteristics for performance and safety Industry leading component and pack testing that includes mechanical, charge/discharge, overcharge protection, short circuit, thermal runaway, vibration, and more...