While out of the office or on the road, increase your productivity by powering your notebook for longer periods with the HP 12-Cell Ultra-Capacity Battery. The HP 12-Cell Ultra-Capacity Battery features a unique integrated power connector.
Compatible with: HP Compaq 6530b, 6720t Mobile Thin Client, 6730b, 6735b, 6910p, 8510p, 8710p, 8710w, nc6320, nc6400, tc4400 Tablet PC and HP EliteBook 6930p, 8440p, 8530w, 8540p, 8540w, 8730w, 8740w, 6440b, 6450b Notebook PC and HP ProBook 6540b, 6545b, 6550b, 6555b.