Top-scorer Millie Cowan flicks the ball past Hinds wicketkeeper Natalie Dodd at the University of Otago Oval.
The Hinds were restricted to 104 for six. Hannah Darlington starred with the ball for the Sparks with three for 12.
The Sparks made a jittery start to the chase.
But an undefeated stand of 86 between Millie Cowan and Amanda-Jade Wellington saw the home team cruise to a comfortable win.
Cowan top-scored with 55 not out and Wellington added 37.
