Fixes the phantom empty battery problem. I never had it, but I think it's one of those issues that was fixed during production since they are producing so many at a time. http://support.nikontech.com/cgi-bin/ni ... _topview=1
Thanks for the link. Wonder if I should use it- I have 18,600+ shots on my D300 and never a problem. ??? Mom always use to say somethin' er other 'bout if it ain't broke- don't fix it.