Toshiba - Primary Battery Pack - Laptop battery - 1 x Lithium Ion 6-cell 4000 mAh (PA3534U1BRS) - Battery, Manufacturer: Toshiba, PN: PA3534U1BRS, UPC: 5055291455782, Technical Details: Removable, Panasonic, weight and dimensions: 206 x 21 x 53 Millimeter, 320 Gram, Energy management: 6 rooms, 10.8V x 4000mAh milliampere hour *, Li-Ion, Color: black