England bowled West Indies out for 45 - the second lowest total in international Twenty20 history - to win by 137 runs in St Kitts.
Joe Root's 55 runs and Sam Billings' brilliant knock of 87 off 47 balls helped to win with ease, taking an unassailable 2-0 lead in the series.
This is England's biggest margin of victory by runs in T20s and the fourth biggest of all time.
The final T20 will be played in St Kitts at 20:00 GMT on Sunday.

Real Madrid handed shock home loss as Celta Vigo spring surprise
Dubai Capitals overpower Abu Dhabi Knight Riders by 83 runs
Mid East finished strong with victory against Arabia
Norris takes F1 title as Verstappen wins Abu Dhabi race
Neser fires Australia to eight-wicket win in second Ashes test
