Rectangular battery with fuel gauge and 7 slit-type contacts on one end. 14.8 Volt Li-Ion Laptop Battery. Fits models; Dell Inspiron 2500, Dell Inspiron 3700, Dell Inspiron 3800, Dell Inspiron 4000, Dell Inspiron 4100, Dell Inspiron 4150, Dell Inspiron 8000, Dell Inspiron 8100, Dell Inspiron 8200, Dell Latitude C500, Dell Latitude C510, Dell Latitude C600, Dell Latitude C6