Just a quick reply - the re-cell is only for the UGOBE batteries I'm afraid...
I do a universal battery that will work with both, but you'll need a different charger (like an IMAX B6 type) to charge it as the RB charger is for Lithium only.
If you can get an old dead Ugobe battery you can actually modify that very slightly, get one of my re-cell kits, and then that will work (but again you'll need an external charger or the original Ugobe charger).
Hope that helps!