Rohit Sharma became the top run-scorer in worldwide T20s.
From 50/4, New Zealand were revived by de Grandomme who opened his shoulders to strike Yuzvendra Chahal for a four and two sixes in three balls, each shot dripping with the force of a man on a mission.
The second India vs New Zealand T20I is being telecast on Star Sports Network.
In between, Krunal also got a controversial wicket, that of Daryl Mitchell (1), who fell prey to an umpiring howler, when "Hotspot" showed a clear inside edge onto the pads.
Both sides are unchanged from Wellington, meaning Kuldeep Yadav continued to sit out with India fielding three allrounders in the Pandya brothers - Hardik and Krunal - and Vijay Shankar.
The young Vijay Shankar was dismissed by Mitchell for 14 and then Rishabh Pant 40 (28)* and MS Dhoni 20 (17)* scored valuable cameo knocks staying firm without losing further wickets, and their unbeaten knocks lead India to 162/3, and a victory by 7 wickets with 7 balls to spare.After losing the first T20, India leveled the T20 series 1-1 with this victory.
The short boundaries notwithstanding, New Zealand persisted with two spinners - allrounder Mitchell Santner and legspinner Ish Sodhi. India chased down the target in 18.5 overs.
The third and final match of the T20I series will be played in Hamilton on Sunday.
Such a result wasn't a surprise - India had not lost back-to-back twenty20 clashes in a series since 2015, and it was always going to be hard for the Black Caps to back up their record win in the series opener.
Dhoni, who last captained India in a T20I against West Indies at Lauderhill in 2016, was once again seen taking on-field decisions.
INDIA BOWLING: Bhuvneshwar 4-0-29-1, Khaleel 4-0-27-2, Hardik 4-0-36-1, Krunal 4-0-28-3, Chahal 4-0-37-0. They came into this game to win and that's what they ended the game with. Kane Williamson would want his batsman to show more composure on the pitch.
Probable playing XI for New Zealand: Tim Seifert (WK), Colin Munro, Kane Williamson (C), Daryl Mitchell, Ross Taylor, Colin de Grandhomme, Mitchell Santner, Doug Bracewell, Tim Southee, Scott Kuggeleijn and Ish Sodhi.