Sorry for the late reply. Only lateral balance with a small amount of lead on one wing tip. I think the battery (600ma flat pack) is mounted just behind the fuel tank in the normal position. Had her out about 3 weeks ago and got another 5 flights on the plane. Flys great! Don't put to much throw into your ailerons and elevator. Use recommended throws with a little expo and work your way up from there. Rudder needs more than recommended if you want to knife edge. Good flying!