Yes, I have them, and they are heatshrinked with the thickest heat shrink I know of...They fit a little loosly in mine, but that may be because I dremeled some areas out of the tray and filed down the sides of the posts. I had trouble with my 2400's fitting when I first got the kit.
You may want to try filing down the sides of the battery posts a little. If that still doesn't work, do what I did and on the two end slots, dremel the ends out a little bit so they are square instead of rounded.
Good Luck,
Speedo