I only recommend sine wave to run motors or microwave ovens. MSW can damage some electronic controls on coffee makers and electric blankets/pads.
1 bar lost at 21,451 miles, 16 months.
2 bar lost at 35,339 miles, 25 months.
LEAF traded at 45,400 miles for a RAV4-EV
I-Pace on order for end of 2018 delivery