Stanton said:
You can L2 charge every Leaf every made; in fact, there isn't a L2 EVSE made that charges at a rate less than 3.6 kW/h.
I didn't even realize they still made 3.6 kW Leafs (S or otherwise).
The 3.6kw charger is standard, the 6.6kw is optional, with quick charge port.
3.6kw = 3,600 watts. 3,600 watts / 120 volts = 30 amps. 30 amps is the most current that your Leaf will allow to be charged with at 120 volts. If you use an EVSE that provides less than this, such as the included trickle charger cable, I think it limits the current to 12 amps. 12 x 120 = 1,400 watts, or 1.4kw.
At 240 volts circuit the limit is: 3600 watts / 240 volts = 15 amps. Any EVSE with greater than 15 amps capacity will give you the full load of 3.6kw.
Another way to look at it is, range added to battery per hour of being attached, up to about 90% capacity, assuming 4.0 miles / kwhr:
3.6kw 6.6kw
L1 (120v trickle charge cable) will give you: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5 5
L2 (240v EVSE at 12 amps) will give you - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12 12
L2 (240v EVSE at 15 amps) will give you - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15 15
L2 (240v EVSE at 20 amps) will give you - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15 20
L2 (240v EVSE at 30 amps) will give you - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15 25
L2 (240v EVSE at 50 amps) will give you - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15 25
These numbers are just approximate so as to give you some perspective. The thing to remember is that you want to "Future Proof" any installation that is done by a hired electrician. If a Tesla or other faster rate of charge EV is in your future you may want to go with a 50 amps circuit and EVSE. If not, then what you have will work.
Hope this helps.