Smart EV charger linked to solar and powerwall

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BigNige

3 posts

Wannabe Geek

#272036 6-Jun-2020 14:50

Doing a new house build that will have a 6kw solar array and powerwall also. I want to get an EV charger (for Tesla model 3 but potentially others) that is smart and able to use excess power when powerwall and house usage is in excess supply. Any ideas on what charger to get?

I have installed the Tesla charger at work so want a charger at home also.

morrisk

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#2499724 6-Jun-2020 16:54

No personal experience with this charger but I have seen it reviewed and written about a lot over last few years and I think might fit what you are looking for.

Zappi smart EV charger.

https://myenergi.com/product/zappi/

I think I have seen somewhere that there are NZ distributers.

robbo1

2 posts

Wannabe Geek

#2504477 14-Jun-2020 14:23

I have a powerwall but when I got it I didnt have an EV. If I had I would have got this inverter https://www.solaredge.com/products/ev-charger#/

Jase2985

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#2504550 14-Jun-2020 16:48

you do know you would be limited by the output of the inverter on the solar system

snnet

1413 posts

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#2504588 14-Jun-2020 19:05

Teslas can charge at 32A single, 2 phase or 3 phase. When I've had them on powerwalls or any inverter I've dialled the charger down as 32A will make the inverter max out and probably go into a protection reboot loop. You can have it set to charge at a lower amperage, at least with the Tesla charger.

SomeoneSomewhere

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#2504658 14-Jun-2020 21:01

robbo1:

I have a powerwall but when I got it I didnt have an EV. If I had I would have got this inverter https://www.solaredge.com/products/ev-charger#/

Looks like a great way to have a useless brick of power electronics in 5 years, given it has to connect to their servers before starting to do anything.

Obraik

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#2504997 15-Jun-2020 12:46

snnet:

Teslas can charge at 32A single, 2 phase or 3 phase. When I've had them on powerwalls or any inverter I've dialled the charger down as 32A will make the inverter max out and probably go into a protection reboot loop. You can have it set to charge at a lower amperage, at least with the Tesla charger.

Unfortunately, modern Tesla's are limited to 16a on 3 phase AC (max of 11kW). Older Model S that have the dual charger upgrade can do 32a 3 phase though.

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