I have a Toshiba Satellite L500D 174 and I've been looking for a new CMOS battery for this specific model but I wasn't able to find one.
It is a 3V battery and it looks similar to this one.
http://www.ebay.co.uk/itm/NEW-CMOS-RTC-Battery-ML1220-for-Toshiba-Satellite-L455-L455D-L505-L505D-L555-/251312271645?pt=US_Motherboard_Components&hash=item3a8360f11d
It is a 3V battery and it looks similar to this one.
http://www.ebay.co.uk/itm/NEW-CMOS-RTC-Battery-ML1220-for-Toshiba-Satellite-L455-L455D-L505-L505D-L555-/251312271645?pt=US_Motherboard_Components&hash=item3a8360f11d