Tesla Motors Club
I live in an area of the Northeast that can be prone to power outages on occasion due to thunderstorms and hurricanes (pretty area, lots of trees.... lots... of... trees...), and I'm wondering what backup methods people have used/recommend in these situations? I have a couple superchargers near me on main highways so I'm sure those would still be functional, but given how 2020 is going I'd rather be prepared. 
I've ready about charging off a generator as long as it's providing current with a pure sine wave (and Teslas won't charge if that is not the case to protect the car, or so I've read), so I figure this is an option for emergencies. A coworker suggested using a marine battery kept charged throughout the year with a trickle charger, but I can't find any instances where charging off a marine battery would work so I'm inclined to think it doesn't/might ruin the Tesla.
Powerwall/solar is not an option as I live in a condo.
Any suggestions?
I've ready about charging off a generator as long as it's providing current with a pure sine wave (and Teslas won't charge if that is not the case to protect the car, or so I've read), so I figure this is an option for emergencies. A coworker suggested using a marine battery kept charged throughout the year with a trickle charger, but I can't find any instances where charging off a marine battery would work so I'm inclined to think it doesn't/might ruin the Tesla.
Powerwall/solar is not an option as I live in a condo.
Any suggestions?