DELL 312-0028, Laptop battery Dell replacement 312-0028 battery pack, this quality power pack is 14.8 volts and 4400 milliamps and will prove a suitabel rplacement for your Dell portable computer, a very versatile pack that is used in many notebooks including Inspiron 8000 R650, Inspiron 8000 R700, Inspiron 8000 R800, Inspiron 8000 R850, Inspiron 8000 R900, Inspiron 8100, Inspiron 8100  to name just a few, you may find this listed elswhere on our site for other laptops as its used quite a lot We quite clearly supply a very large range of batteries we cannot always have stocks of the slower moving lines as batteries have a shelf life and we insist on quality control for our customers, which may mean slightly delayed shipment date, where this is necessary you will be advised by email. Cemistry of battery Li-ion Voltage  14.8 volts Capacity  4400ah Colour Dark Grey Dimensions: 139mm x 89.70 mm x 23.30 mm