Buttler stars with the bat for England in Twenty20
England's cricketer Jos Buttler plays a shot during the second T20 match between England and West Indies at the Kensington Oval in Bridgetown on March 11, 2014 - by Jewel Samad
The West Indies can win the three match series if they beat England having won the first game on Sunday.
Buttler's highest T20 International score was the feature for England, but the tourists were unable to post a more intimidating target because of a fine piece of bowling by Krishmar Santokie, who took four wickets.
Needing victory to keep the series alive ahead of the final fixture at the same venue on Thursday, the tourists were indebted to the belligerent wicketkeeper-batsman.
He followed up his 99 in the last One-Day International in Antigua a week earlier with another pugnacious effort, his innings occupying 43 deliveries and including five fours and three sixes.
Buttler put on 76 for the fourth wicket with Alex Hales, the opening batsman living a charmed life in getting to 40 off 36 balls.
They had come together with England labouring at 26 for three in the fifth over, Santokie claiming two wickets with his clever medium-pacers and proving to be good value to the home team as replacement for the injured spinner Sunil Narine.
The Jamaican left-armer returned to stem England's pursuit of quick runs with the wickets of both Buttler and Ravi Bopara in the 19th over before Dwayne Bravo, who had broken the partnership between Hales and Buttler just before a break for rain, added the scalp of Tim Bresnan off the final ball of the innings.