Total Micro: This high quality 6 Cell, 10.8V, 5200mAh Li-Ion Battery is built with premium quality components specifically for use with HP / Compaq 6440b, 6450b, 6930b, 6530b, 6535b, 6550b, 6730b, 6735b, 6500b, 6700b, 8440p, 8440w