OK, so I think that i've decided on this;
http://www3.towerhobbies.com/cgi-bin...?&I=LXTCF4&P=7
AND
http://www3.towerhobbies.com/cgi-bin...?&I=LXPZT6&P=7
Now the question is how do I wire this into the gun? And do both leads need to be plugged into the charger or can I hard wire the longer battery lead directly to the gun and charge off of the other one?