My rule with modified sine wave is only use it on electronics you don't care about.
I gave away or sold my modified sine waver inverters years ago.
Pure sine wave stuff has gotten so cheap, why waste good electric stuff with a modified sine.
2011 white SL leaf with 2014 batt.
Chargers: Panasonic brick moded for 240v, duosida 16a 240v and a 10kw setec portable CHAdeMO