Biting the bullet. Doubling my battery capacity $$$$$$

[EastTexCowboy]

I would also doubt that those are UL listed.
But maybe, that's your point.
So, throwing out UL listing.
Your $8,800 for about 51kwh
My $8,000 for about 57kwh
And mine are delivered in 3 days.
The math still works in my favor. At least for my location. If you aren't in the US, of course it would be different.

I can't make the math work for $8,000 for 57kwh. How did you come up with that?

 

[EastTexCowboy]

I am assembling third pack. Does it ever end???

For some of us, maybe. @timselectric will be powering half of Kentucky before he's done.

 

[timselectric]

I am assembling third pack. Does it ever end???

Yes,
When you run out of money, or die. lol

 

[timselectric]

I can't make the math work for $8,000 for 57kwh. How did you come up with that?

After tax credit.

 

[EastTexCowboy]

After tax credit.

Okay. Now it works. Lol.

 

[timselectric]

For some of us, maybe. @timselectric will be powering half of Kentucky before he's done.

Let's just say, when the shtf.
Party at my house. lol

 

[Danke]

I would also doubt that those are UL listed.
But maybe, that's your point.
So, throwing out UL listing.
Your $8,800 for about 51kwh
My $8,000 for about 57kwh
And mine are delivered in 3 days.
The math still works in my favor. At least for my location. If you aren't in the US, of course it would be different.

Can you break don’t the prices? Cells, BMS, etc?

Did not say it is not cheaper to DIY. Just “it depends.” As not necessarily 2/3 the cost. With your numbers, about 27% cheaper. So that is the premium for the convenience of going with rack batteries. I also ended up with rack batteries that are UL, so I actually paid more than 1/3 over your built. But where I live, AHJ requires it. Would like to live where I could do everything permitless!

And build my own batteries.

 

[timselectric]

Did not say it is not cheaper to DIY. Just “it depends.” As not necessarily 2/3 the cost.

Right
My calculations were based on locally sourced options. Money can definitely be saved. If you have the patience to wait for a shipment from China.

 

[EastTexCowboy]

Right
My calculations were based on locally sourced options. Money can definitely be saved. If you have the patience to wait for a shipment from China.

What did it cost you on shipping to KY? I have to think it would be similar charges to east Texas.

 

[Danke]

Right
My calculations were based on locally sourced options. Money can definitely be saved. If you have the patience to wait for a shipment from China.

Maybe after the inspection, some DIY is in my future, can never have enough, right? …

 

[timselectric]

What did it cost you on shipping to KY? I have to think it would be similar charges to east Texas.

16 cells plus shipping was just under $3k.

 

[timselectric]

Maybe after the inspection, some DIY is in my future, can never have enough, right? …

Absolutely right.

 

[fatdaddy]

After tax credit.

how much of a tax credit are you getting per battery pack? I was looking at using the Ganfeng grade B 280ah cells at 18650 store. I figured i could make a pack with BMS for $2200 (im estimating tax) unless I'm missing something?

 

[Danke]

how much of a tax credit are you getting per battery pack? I was looking at using the Ganfeng grade B 280ah cells at 18650 store. I figured i could make a pack with BMS for $2200 (im estimating tax) unless I'm missing something?

Many (most?) state don’t charge sales tax for solar equipment. You can take off 30% for solar from your federal income taxes carried over up to 10 years. Installation cost too if you hire someone.

 

[EastTexCowboy]

Many (most?) state don’t charge sales tax for solar equipment. You can take off 30% for solar from your federal income taxes carried over up to 10 years. Installation cost too if you hire someone.

I'm pretty sure you can include anything else related to the install such as wiring, panels, breakers, etc.

 

[timselectric]

how much of a tax credit are you getting per battery pack? I was looking at using the Ganfeng grade B 280ah cells at 18650 store. I figured i could make a pack with BMS for $2200 (im estimating tax) unless I'm missing something?

30%

 

[Danke]

I'm pretty sure you can include anything else related to the install such as wiring, panels, breakers, etc.

Yup, and your insulating rubber cowboy boots.

 

[fatdaddy]

30%

that works on anything solar related. even these DIY batteries?

 

[timselectric]

that works on anything solar related. even these DIY batteries?

Yes, and everything else needed to build it.

 

[JJJJ]

There is an amazing sense of accomplishment when you build your first battery pack. Granted there is a little nervousness the first time you start your inverter. Once things are up and running you are hooked as you start to think of the possibilities. Especially when your better half sees what is possible.