Yes I have the battery in there, no mods no nothing, the battery I have fits beter than the 8.4v 1100 mah one i have, here is the link to an amazing battery site.
http://www.onlybatterypacks.com/show...temID=11069.26 that is the battery i have no mods no nothing, I taped the two sticks together so it is easier to work with but nothing else.