If you are paying, I would look at the Pro-level Husqvarna, with 3 of their high-end batteries, and a quick charger.
The field changes rapidly, so next week there could be a different answer!
As far as vehicle charging, most batteries can charge using their 120V charger and an inverter. Some manufacturers recommend a ‘sine wave inverter’, which, apparently, provides cleaner power.
Philbert