Dala's solar-powered workshop (+DIY powerwall coming)

[Dala]

MIght be the best "battery recycle" program - If you can work with Tesla on something similar?
Quick calc on purely SWAG estimate:
- 4 million Teslas on road in US by end of 2022 - all available for "spent" use by 20XX - 2030??
- Average remaining energy for grid support (or off grid) - 35 kWh from 65% to 15% on average "spent" 70 kWh batteries
- 4 million X 35 kWh = 140 billion Watt-hours (just to make it look ridiculously big )

Do your own math

PS, hopefully by 2030, Tesla, et.al., will figure out how to recycle highly Li rich spent batteries. Guess we'll see.

Way ahead of you. Tesla Model 3 battery support is in the works, we have it working on a POC setup, will port it to the standard branch!
https://github.com/dalathegreat/BYD-Bat ... 22a19ac419

[Marktm]

Game changing - you are!

[Marktm]

Maybe a true "plug and play" can be achieved (V2X)? OEMs won't have that!

[denwood]

Elon is already counting heavily on recycled lithium as part of the master plan.

@dala open source and $15 sound pretty compelling

So you mean these bits:

This code fits on the LilyGo ESP32 T-CAN485 devboard , see https://github.com/Xinyuan-LilyGO/T-CAN485

You will also need a Nissan LEAF battery, any model year will do

Finally, you will need a hybrid solar inverter that accepts the BYD battery communication standard, for example the Fronius Gen24

[MikeinPA]

This is neat--thanks again Dala. SMA fan here, so it is good to see SMA battery inverters talk with BYD HV batteries.

Question--any concerns about holding the Leaf main contactors closed essentially full time? Generating heat?

[Dala]

This is neat--thanks again Dala. SMA fan here, so it is good to see SMA battery inverters talk with BYD HV batteries.

Question--any concerns about holding the Leaf main contactors closed essentially full time? Generating heat?

The contactors draw ~5W each, so very little thermal load! No worries whatsoever!

[Dala]

I made a quick walkaround video on my LEAF battery here:

https://youtu.be/XHZWGLzT7gg

It has now been in service for 2 months, and I haven't bought any electricity at all!

[mwalsh]

Just found the above video today! A great excuse to keep my LEAF and use the 24kWh pack. Well, provided I ever find a 62kWh pack at reasonable cost, that is! Otherwise, I'll end up removing the pack and parting out my LEAF!

[Andrey]

I made a quick walkaround video on my LEAF battery here:

It has now been in service for 2 months, and I haven't bought any electricity at all!

Hi Dala. Maybe a naive question - why not using V2H by Nissan? Then you still have a car.

Using V2H, owners of Nissan LEAF can use their cars as a power source for the household to save money on electricity bills, or as backup power during blackouts or emergencies and support the adoption of renewable energy.

[Dala]

Hi Dala. Maybe a naive question - why not using V2H by Nissan? Then you still have a car.

Using V2H, owners of Nissan LEAF can use their cars as a power source for the household to save money on electricity bills, or as backup power during blackouts or emergencies and support the adoption of renewable energy.

V2H chargers cost a lot of money. That money can instead be spent on a stationary battery. For example, the Quasar DC V2H box costs the same amount of money as a 65kWh Tesla battery. Not economical at all!