This one has bullets...
http://www.amainhobbies.com/product_...ducts_id/14578
This one has a Tamiya plug...
http://www.amainhobbies.com/product_...oducts_id/6414
You can use these connectors if you want to make your own adapter. Just be sure to either switch the plug on the pack with one of those, or trim the tab off the side of the plug that's on there.
http://www.amainhobbies.com/product_...ducts_id/17874