Lipo can only be used with an ESC that excepts Lipos.... So for now with the stock ESC i would get this Battery
http://maxamps.com/proddetail.php?pr...ll-Odd&cat=144 Its a 7 cell so 8.4v more power
, as for a charger a great charger are the Tritons Ive got 3 of em and love them, here is a link to towers for the Triton Jr works just as good as the big Triton
http://www3.towerhobbies.com/cgi-bin...?&I=LXMAH9&P=7