I wouldn't buy one...
Purchased mine end of July, worked great for like 5 weeks. Getting the triple red lights, trip down to 24amps and 6kw per hour charging time. I've seen MANY people with the same issue, works fine for a month or so and craps out.
I emailed charger support on Tuesday, still haven't been contacted.
Regret not going with the cheaper 14-50 option. Less of headache.