Nissan Leaf as a battery

[ThomasD]

The constant draw and charge can't be good for the battery long term.

 

[charlesj]

I was wondering about @essaunders used 2012 Leaf. If that could do V2H or modified with the charger, he could have a good bit of backup
all paid for.

 

[essaunders]

My leaf is a 24khw pack. I figure 25-30% degraded though.

 

[dareed1]

Nissan says that the Leaf battery is guaranteed for 8 years or 100,000 miles, presumably whichever is sooner. Let's take 100,000 miles and assume 300 Wh/mile. That means that the battery can be charged and discharged with 30,000kWh and still have (likely) 70% capacity. If we assume that in the mode suggested by h2ofun we want the battery to last 8 years, then it can do 3750kWh/year, or around than 12kWh/day. (Or, just assume a car is driven 15,000 miles/year = 40miles/day to get 12kWh/day.) If my arithmetic is correct, either a 40 or 60kWh battery would be lifetime limited to a capacity much like one powerwall if used daily.

 

[h2ofun]

I wonder what the used price is. When I was first looking at EVs I looked at an old Leaf. It was really, really cheap, $7K for a 2-year-old model with under 12K miles. But it sat and sat so I decided not to buy it.

I read they have gone way up in price, like most used cars

 

[h2ofun]

i got a $100 bill i will sell you for $10K

first powerwall 12,500, 7500 for each additional...

i need to buy one, hook up in public space and have it drain your battery!

THe folks I am talking to are a lot more money. Again, if you want to add stuff, you are at mercy of who put your stuff in

 

[h2ofun]

Man, you guys are no fun. I love just trying to understand the technical options, which none of us have answers for yet.
And we all can spend money on things that make no sense. I sure have done it with my solar as one of many examples.

 

[CrazyRabbit]

but your the guy who says install more solar then powerwall...

 

[h2ofun]

but your the guy who says install more solar then powerwall...

Yep, I just did not say it made sense money wise, but yep, solar max first!!!

 

[charlesj]

... solar max first!!!

Is that a new product?

 

[charlesj]

My leaf is a 24khw pack. I figure 25-30% degraded though.

If it can be made to do V2H for not much, you are in no matter what as it should be paid for by now.
Call that repurposing cost.

 

[jboy210]

Is that a new product?

I just order an iPhone Pro Max. Same thing?

 

[Vines]

So, this seems to be a much cheaper and great capacity solution than batteries? I am trying to find cost of charger and specs to hook up.

Nissan Approves Charger That Can Draw Energy From LEAF To Power Your Home | Carscoops

The Fermata Energy FE-15 allows owners to power a building during peak hours and charge when it's cheaper

www.carscoops.com

More than simply a generator, the bi-directional charger is actually hooked up to the grid, allowing it to send energy back into the power grid in states with utility demand response programs, which could allow owners to get paid for their power.

Well, one thing as an additional expense here is this is a 480/277vac application. You will need a properly sized transformer if you plan on installing this at a residence with 120/240 split phase power. Depending on whether the charger needs 3 phases you might have to do some phase conversion magic, which is also probably expensive.

I am curious how Nissan would modify the Leaf warranty if I were to use this device? Anyone ask them?

 

[Vines]

Here is the datasheet I found with a little looking around.

https://static1.squarespace.com/sta.../1662921882220/FE-15-Datasheet-web_9-9-22.pdf

 

[Vines]

Well, one thing as an additional expense here is this is a 480/277vac application. You will need a properly sized transformer if you plan on installing this at a residence with 120/240 split phase power. Depending on whether the charger needs 3 phases you might have to do some phase conversion magic, which is also probably expensive.

I am curious how Nissan would modify the Leaf warranty if I were to use this device? Anyone ask them?

Rereading the datasheet, it requires line to neutral-voltage of 277 vac. So no phase converting needed.

 

[h2ofun]

Well, one thing as an additional expense here is this is a 480/277vac application. You will need a properly sized transformer if you plan on installing this at a residence with 120/240 split phase power. Depending on whether the charger needs 3 phases you might have to do some phase conversion magic, which is also probably expensive.

I am curious how Nissan would modify the Leaf warranty if I were to use this device? Anyone ask them?

If its 480, then I would not work. Which would be great since I could stop researching, and wife would be happy. But, will see if they ever call. I might try to call them this week and just put to bed

 

[Vines]

If its 480, then I would not work. Which would be great since I could stop researching, and wife would be happy. But, will see if they ever call. I might try to call them this week and just put to bed

240 X 480-120/240 Volt 1 Phase Transformers

There are transformers possible, but basically, you should forget about it and wait until consumer-grade devices are available.

See the link I posted above that shows the line voltage of 277 to neutral. So this is a single-phase device designed for a commercial service.

 

[charlesj]

Yep, doesn't look like a candidate for V2H use to use on an electric car.

 

[h2ofun]

I am getting more serious about maybe buying a leaf. Looks like this charger works for residential and will be shipping this year. Its not cheap, for a 2 head model, 8K, but what the heck.

dcbel 16 Home Energy Station - dcbel

Charge your electric vehicle with solar energy and transform its battery into a backup power source with dcbel r16.

www.dcbel.energy

 

[Zabe]

I am getting more serious about maybe buying a leaf. Looks like this charger works for residential and will be shipping this year. Its not cheap, for a 2 head model, 8K, but what the heck.

dcbel 16 Home Energy Station - dcbel

Charge your electric vehicle with solar energy and transform its battery into a backup power source with dcbel r16.

www.dcbel.energy

It will be interesting to see if you can get the leaf integrated into your system and have it play nice with your powerwalls. I imagine that will be your greatest difficulty.