Rblackley
Posts: 2
Joined: Sun Oct 13, 2019 5:15 pm
Delivery Date: 14 Oct 2019

2 nissan leafs connected to grid v2h

Mon Oct 14, 2019 3:05 pm

I have 2- 2013 Nissan Leaf S models. They have j1772 ports for charging . I would like to use the Leafs big batteries with a grid tie inverter to offset some of our home's peak energy cost. Is my only option 12v 1000w max inverter? I still drive the vehicles and I am aware of the options repurposing the batteries

I have considered using each 12 vlt battery, car in aux mode, and backfeeding 120 v to an outlet with 15 amp breaker 1000 w gridtie invertor on a timer. Since I have 2 cars available is there a way to combine (in Series possibly), with out damaging the leaf 12vlt system.

I anyone retrofitting CHAdeMO ports on these early models? If so are they bi directional?

Thanks for your help,

Ryan

PrairieLEAF
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Location: Weld County, Colorado

Re: 2 nissan leafs connected to grid v2h

Mon Oct 14, 2019 7:33 pm

It's my understanding that previous generation LEAFs cannot feed power from the J1772, but the current generation can.

I don't know what it would take to modify an earlier LEAF to feed power from the J1772, but every example I've seen uses an inverter connected to the 12v system, as you described.

Remember to place the car in ready mode, not acc. mode, when drawing from the 12v system.

It is an interesting idea, but I doubt it would work out in your favor, considering the losses and the lack of smart energy flow control to and from the cars.

I'm interested in seeing other replies.
2016 LEAF S-30 w/QC "Lexie"

cwerdna
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Re: 2 nissan leafs connected to grid v2h

Mon Oct 14, 2019 7:54 pm

PrairieLEAF wrote:
Mon Oct 14, 2019 7:33 pm
It's my understanding that previous generation LEAFs cannot feed power from the J1772, but the current generation can.

I don't know what it would take to modify an earlier LEAF to feed power from the J1772, but every example I've seen uses an inverter connected to the 12v system, as you described.
I've not heard of any official support be it in a vehicle or via the SAE standard for J1772 for a car to output power from its inlet. It's for charging only. Years ago at CES, it might've been at the Yazaki building outside CES, they had a proposal to get power from an EV via J1772. I might've taken a picture but I did ask about the standard not supporting it. I think the answer was that it was just a concept.

CHAdeMO support V2H and V2G but the vehicle needs to support it, as well. JDM Leafs have had support for it probably since the beginning. See below.

https://www.nichicon.co.jp/english/prod ... ew124.html
https://www.greencarcongress.com/2012/0 ... 20530.html

Unsure which years or revisions of US market Leafs can do it. I've personally seen Nissan-supplied gen 2 Leafs (supposedly) powering a V2H box via CHAdeMO at EVents (e.g. Cupertino EVent years ago before '18 Leafs were shipping in the US) and at Nissan's booth at CES in Vegas. Unclear if the cars were modified/special.

'19 Bolt Premier
'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

LeftieBiker
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Re: 2 nissan leafs connected to grid v2h

Mon Oct 14, 2019 7:57 pm

Unsure which years or revisions of US market Leafs can do it.

I've read 2015 and up.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

PrairieLEAF
Posts: 45
Joined: Tue Sep 10, 2019 8:58 am
Delivery Date: 04 Feb 2019
Location: Weld County, Colorado

Re: 2 nissan leafs connected to grid v2h

Mon Oct 14, 2019 10:01 pm

Ah...CHAdeMO and 2015+. I didn't realize a 2016 can play!
2016 LEAF S-30 w/QC "Lexie"

cwerdna
Posts: 9733
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: 2 nissan leafs connected to grid v2h

Tue Oct 15, 2019 12:42 am

On this note, I saw this box at Nissan HQ in Yokohama years ago: https://mynissanleaf.com/viewtopic.php?p=504949#p504949. If memory serves, the box was not at Nissan HQ's lobby in Yokohama in late 2017. Some of the links at viewtopic.php?p=509821#p509821 still work.

I will be attending Tokyo Motor Show again in a few weeks. Yay!

'19 Bolt Premier
'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

GerryAZ
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Re: 2 nissan leafs connected to grid v2h

Tue Oct 15, 2019 3:23 am

The owner manuals for 2011 and 2015 did not mention V2H or V2G. The manual for 2019 indicates that the car is capable with suitable external hardware connected to the CHAdeMO port.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL+ purchased 8/10/2019

LeftieBiker
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Re: 2 nissan leafs connected to grid v2h

Tue Oct 15, 2019 3:33 am

GerryAZ wrote:
Tue Oct 15, 2019 3:23 am
The owner manuals for 2011 and 2015 did not mention V2H or V2G. The manual for 2019 indicates that the car is capable with suitable external hardware connected to the CHAdeMO port.
Before 2018 Nissan wasn't planning V2G or V2H for North America. Now they are at least considering it.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Rblackley
Posts: 2
Joined: Sun Oct 13, 2019 5:15 pm
Delivery Date: 14 Oct 2019

Re: 2 nissan leafs connected to grid v2h

Tue Oct 15, 2019 1:49 pm

Thank for all the replies and info. I am actually looking to power directly off the 12volt battery not the j1772, with the big batteries re-energizing 12volt while in aux mode. Its my understanding that you can pull around 1000w with out depleting the 12volt too much. off peak is .03 and peak is .33 so i would love to off set a little if i can. anyone used 1000w gridtie inverter with a 12v source?

Thanks

Ryan

PrairieLEAF
Posts: 45
Joined: Tue Sep 10, 2019 8:58 am
Delivery Date: 04 Feb 2019
Location: Weld County, Colorado

Re: 2 nissan leafs connected to grid v2h

Thu Oct 17, 2019 8:29 pm

Wow, that's quite a price difference for peak/off peak.

I started investigating those grid tie inverters for a small solar installation. The more YouTube videos I watch, the less I want to use them. It sounds like they overheat easily, are prone to blowing MOSFETs, and have efficiency of about 50%.
2016 LEAF S-30 w/QC "Lexie"

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