In 2007 total beat the 260 set by Srilanka against Kenya.
Australia have set a new record score in Twenty20 international cricket, hitting 263-3 against Srilanka in Pallekele.
All-rounder Glenn Maxwell hit 145 not out from just 65 balls.
Srilanka – who had won the toss and elected to bowl first – could only manage 178-9 in reply as Australia won the first game of the two-match series by 85 runs.
Maxwell, who opened the batting, hit nine sixes and 14 fours in his innings – the second-highest in international T20 cricket.
“At the top of the order you have a little bit more freedom to get yourself into the game and play pretty normal shots without taking too many risks,” Maxwell said.
Australia team-mate Aaron Finch holds the individual record score of 156, which came against England in 2013.
However, 27-year-old Maxwell was only playing as an opener after Finch broke a finger during the recent one-day series against Sri Lanka.
“Batting at the top is somewhere I would love to bat, but most of the teams I play in the opportunities just aren’t there,” Maxwell said.
