Replacement 4400mAh Dell Inspiron 1420 Batteries - LI-ION Laptop Battery Pack for Inspiron 1420
Voltage : 11.1V
Capacity : 4400mAh
http://www.power-batteries.net/notebook/dell/inspiron-1420.html
http://www.laptop-battery-inc.co.uk/laptop-batteries/dell-inspiron-1420.htm