Just read this article this morning
http://www.theinquirer.net/?article=28406
...why the badger fixation???
This is Dell's webpage on the matter.
https://www.dellbatteryprogram.com/Default.aspx
says some Dell laptop batteries are defective with these model numbers
3K590
C5340
X5308
F5132
U5882
U5867
6P922
C5446
C2603