Rectangular battery, slightly rounded on one end and seven slit-type contacts on end. 10.8 Volt NiMH Laptop Battery. Fits models; Toshiba Satellite 1600 series, Toshiba Satellite 1605CDS, Toshiba Satellite 1620CDS, Toshiba Satellite 1625CDT, Toshiba Satellite 1640CDT, Toshiba Satellite 1650CDS, Toshiba Satellite 1670CDS, Toshiba Satellite 1675CDS, Toshiba Satellite 1690CDT, Toshiba S