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.

Jordan qualifies for the FIFA Arab Cup final
Sharjah Warriorz make it two in two with 11-run win over Gulf Giants
Bournemouth rescue draw with Man United in eight-goal thriller
Morocco beat UAE to reach FIFA Arab Cup final
Mid East Falcons win inaugural United Series Championship in Dubai
