This is what 60KWH looks like

[Austenpowers]

Hello

Just an update here is a pic of my battery build so far



60 odd KWh of pure fire burning lg chem cells
Will do everything to safe guard my self from this .... the box will have a double lined cement sheet cover with insulation in between the layers to keep cold and heat out...

I'm up to the big cables and bus bars hopefully not to long till I top balance and run these on my home

 

[LydMekk]

What specific chemistry is this?

 

[meetyg]

How do you know these aren't defective modules that came off Chevy Bolt EVs (the ones that caused fires and a massive recall) ?

I'm mean it's one thing to use second hand Lithium Ion packs, but whenever I hear LG CHEM, it makes me worry...

I do have to say that it looks pretty compact for 60kWh. Probably due to the higher energy density of those Lithium-Ion, compared to LFP.

 

[Supervstech]

Wow… HEAVY safety is sure recommended… I would build a large steel enclosure to safeguard them in.
In a room with two layers of 5/8” drywall, covered in cement fiberboard. All cable entries to the room in conduit, with fire caulk covering them heavily.

 

[Bluedog225]

With compressed gas behind them? smart?

Maybe these belong outside.

 

[Solar Guppy]

There is a reason they are so cheap, no one wants them anywhere near a home. When something goes wrong, some home made box will do nothing to save the house.

Please do some research on this, like the dreamliner ( Boeing 787 ) that grounded the fleet. On top of this you have cells from a manufacture that has recalled basically 100% of it's production used in EV and ESS systems.

 

[Supervstech]

Remember...
The Bolt fires happened at home slow charging...
The batteries just burst into flames and couldn't be put out.
I wouldn't want them in a home solar setup.

 

[yabert]

What specific chemistry is this?

NMC from Kia Soul EV or Hyundai Kona EV.
So, not the recall chevy Bolt battery, but probably still recall Kia/Hyundai battery.

 

[yabert]

I'm up to the big cables and bus bars hopefully not to long till I top balance and run these on my home

What is your configuration? 100S or 5 parallel 20S?

What are the breakers at the bottom of the modules? Is they can break high amps (Interrupting Rating over 5kA, in DC of course)?

 

[wiseacre]

I have just the thing to deal with a fire.
I never thought of using a maple syrup arch for a battery box but in this case I'd recommend it.

 

[Austenpowers]

Bus bar and heavy cables done

 

[Nobodybusiness]

Bus bar and heavy cables done View attachment 168466

Good luck there with those cells.

 

[AntronX]

You should segregate those modules so they all don't burn up if one catches fire.

 

[Supervstech]

Beware of cable routing issues. I see that they are not in place yet, but be sure all positives are the same length, and all negatives are the same length… route the longest one neatly between the cells, well protected from any abrasion, then make ALL the same polarity cables the exact same length…

 

[yabert]

make ALL the same polarity cables the exact same length…

This is important in theory, but without knowing the current pull by each battery in parallel, the reality can be different.
It seem that Austenpowers build a 74V battery, so except if it goal is to pull 40 kW from this one continuously, those cable are way to big for nothing.
I would like to know what will be connect to this battery, but I guess there is chance those heavy cable will pass less than 30A only.
That is still 11 000W (74V x 30A x 5)

 

[LydMekk]

I would put these outside in a small concrete bunker with ventilation and only the feed cables going into the main building...

 

[AntronX]

Install steel water sprinkler pipe above modules.

 

[Solar Guppy]

Install steel water sprinkler pipe above modules.

Water does nothing for L-ion, once they start burning, nothing much can be done except watch

 

[AntronX]

Water does nothing for L-ion, once they start burning, nothing much can be done except watch

It cools down adjacent cells to halt the spread of fire.

 

[AntronX]

Water does nothing for L-ion, once they start burning, nothing much can be done except watch

By the way, what do you think of this DIY grid tie inverter project? https://jamesfotherby.com/index-page/600w-grid-connected-inverter-v5/ I am thinking of building one to learn about inverter design and couple it with very cheap 12c/w used panels to save money on power bill (for a friend). This will not be getting inspected obviously.