7kw vs 11kw charger

[arichakra]

Hello,
I am planning to buy an electric car soon. I never had any type of car in Norway so very little experience. Most likely I am not going to get a garage space with option for charging. So I'll depend entirely on road side charging facilities provided by kommune or on fast charger stations.
I have noticed that some cars comes with onboard 7kw charger and we can buy an 11kw charger for extra cost of around 3000NOK.
My question is that is it wise to buy 11kw charger? Will there be any advantage in terms of charging time and cost if I charge at the public charging points?
Any suggestions would be much appreciated

Rgds

[elektrolux]

You will most likely not be able to use 3 phase 11 kW charging in Norway unless you are lucky to have 3 phase 400V system.

If the 11 kW car can charge with 7,4 kW on single phase in adition to 11 kW then I would pay the extra 3000 NOK

[Orbit]

Will there be any advantage in terms of charging time and cost if I charge at the public charging points?

For most public AC charging you pay per hour, thus you get 50% more energy for the same price when the car and charging location supports 11 kW. It also reduce your charging time correspondingly, a benefit if you are waiting for AC charging to complete (which is normally not that often).

[Marius Kotsbak]

Well, most public spaces charging 1kr/min for AC it is probably not worth it instead of DC fast charging.

If you chose between 7 and 11 kW it is a dilemma, as you would end up with 3,6kW with 11kW charge point on single phase. There are a lot or 3,6/7kW charge points, even though most of them are 11/22kW. At home you will probably be stuck at 3,6 kW with the upgrade.

[arichakra]

Thanks a lot to you all for your valuable suggestions  
Here are two of the nearest charging points from my home, what I understand is that those are only 3.6kw and 7.4kw. So if I depend on these charging points only, then there will be almost no advantage of an 11kw, 3 phase charger over a 7kw. Is that correct? 

Du kan ikke vise dette vedlegget.
Du kan ikke vise dette vedlegget.

[arichakra]

 Du kan ikke vise dette vedlegget.

[RJK]

Most likely, you'll be able to get 7,2 kW on the same charger if you go with the 11 kW charger option, as they will work on 3-phase TN grid, and still support 7,2 om a single phase or combined phase.

BUT, you should get it verified with the reseller how it would work for that car om 230V 3-phase IT grid connection.


Consider also that other publically available 11 and 22 kW chargers is priced both on kWh and time, so going slow on these, eould possibly give high rate on slow charging.

[Orbit]

I suggest you use the "Fortum Charge and Drive" app to validate the capabilities of the nearby charging points. That is the most up to date source.

Oslo is also replacing some of the older 3.6 kW setups with 7.4 or 22 kW (where only the latter can deliver 11 kW). Thus 11 kW might become a nearby option in the future, even if it's not there right now (...or if you move).

Personally, I think the that you are likely to reclaim the extra 3000 kr when you eventually are going to sell the car in the second hand market.