Yes
1. Make a fist with both hands
2. Extend your index finger, on both hands
3. Place your index fingers, one under each wing...
4 Lift the plane up, only supported by your two index fingers, on the by the manual suggested CG point...balance...
5. Shift existing weight, such as the battery around until you find the CG, if needed add additional weight


Methods to fasten battery:
-Wrap in foam and clamp it tight in the fuselage
-Glue velcro on the battery and another piece in the plane
-Drill two small holes in the fuse and zip-tie the battery

...Remember to keep the battery and reciver padded and keep in mind that the battery is heavy and WILL shift forward in a nose-down crash, possibly crushing things (like an expencive reciver) in it's way!

Godspeed StoneDeaf