[MorTech]

EZGO Elite Lithium has 3 models - 2.0(60ah*50v=3kw), 3.0(90ah*50v=4.5kw), 4.0(120ah*50v=6kw)

The EZGO AC motor is pretty efficient at about 100w per mile.
An EZGO Elite 4.0 has an approx range of 60 miles (6kw/100w) at 80F.
I am guessing it comes with a standard 1000w battery charger so charging rate of approx 10 miles per hour.

The lithium pack has a built-in battery management system that prevents over-charging and also protects from over-discharging. Plugging in every night will not shorten the life. I don't know how many charge cycles the lithium pack has but you should easily get 10 years from it. Leaving a lithium battery in a partial state of charge won't damage them like lead-acid batteries.