(Removes incorrect reference to Chevy Volt in 24th paragraph. The error first appeared in update 2) * U.S. team includes FAA, NTSB and Boeing experts * Japanese battery maker also helping in investigation * Damaged battery to be sent to Tokyo for further checks * ANA cancels more than 60 flights * U.S. official: No timetable to return to flight By Antoni Slodkowski TAKAMATSU, Japan, Jan 18 (Reuters) - U.S. and Japanese aviation safety officials wrapped up their initi