Would a Dell Inspiron 1521 battery fit within a Dell Inspiron 1545?

Doesnt fit.
The informations shows that Dingle inspiron 1521 battery fits for inspiron 1520, 1720, 1721, Vostro 1700 , 1500

To see the informations present http://www.shopbatteries.co.uk/laptop-batteries/dell-inspiron-1521.htm
or http://www.my-batteries.com/laptop-batteries/dell-inspiron-1521.htm Report Ill-treat