Great Read on POWERWALLS!!! Its about US!!!

Robert Baumer

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May 6, 2017
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144
daromer said:
Thats how the market have been in all times.
I personally hope that more generalized packs will come down in price. Working with individual cells is time consuming for larger systems like mine. I have not been able to score many packs last 12 months for free. I have kind of payed for them all and thats how it has been for last 3 years here.
Of course for smaller systems I do hope the the new price also come down. Atleast it has come down a fair bit.

I believe that it will be cheaper in the long run to just buy the Tesla Powerwall. Just doing the math, the Powerball 2 is 13.2 Kwh and it looks like they use 3600 mAh batteries with a 10 year warranty. I believe in the long run, the media coverage is going to sink the DIY project. Do you think I am wrong?
 

daromer

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I think it depends. If we look at pure cost they might come in to same price. heck thats almost what they do today. So its the work. I cant buy new cells in sweden. It wont repay the work at all. The electricity here is so cheap.

I dont think the media will sink the DIY part. it will shift its focus a bit. In future we might not build on 2nd hand cells and not 18650. Perhaps bigger cells or even prebuilt packs.
Neither the less I cannot see in the future and i never win Lottery so :)
 

hbpowerwall

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RobertBaumer said:
daromer said:
Thats how the market have been in all times.
I personally hope that more generalized packs will come down in price. Working with individual cells is time consuming for larger systems like mine. I have not been able to score many packs last 12 months for free. I have kind of payed for them all and thats how it has been for last 3 years here.
Of course for smaller systems I do hope the the new price also come down. Atleast it has come down a fair bit.

I believe that it will be cheaper in the long run to just buy the Tesla Powerwall. Just doing the math, the Powerball 2 is 13.2 Kwh and it looks like they use 3600 mAh batteries with a 10 year warranty. I believe in the long run, the media coverage is going to sink the DIY project. Do you think I am wrong?

I think the key here is the scalability of what we are doing. The fact we can do it over time, no huge capital outlay from the start. Many advantages for DIY as there is with Going Commercial. If I had the money I'd do a Tesla Powerwall, but the fact is I can't afford that outlay and don't like loans so for me... It's awesome - and with the extra effort of putting it out there for the masses I paid back my 10k investment in 15.5 months - this project is now cash positive.
 

mike98

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Aug 16, 2017
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7
hbpowerwall said:
RobertBaumer said:
daromer said:
Thats how the market have been in all times.
I personally hope that more generalized packs will come down in price. Working with individual cells is time consuming for larger systems like mine. I have not been able to score many packs last 12 months for free. I have kind of payed for them all and thats how it has been for last 3 years here.
Of course for smaller systems I do hope the the new price also come down. Atleast it has come down a fair bit.

I believe that it will be cheaper in the long run to just buy the Tesla Powerwall. Just doing the math, the Powerball 2 is 13.2 Kwh and it looks like they use 3600 mAh batteries with a 10 year warranty. I believe in the long run, the media coverage is going to sink the DIY project. Do you think I am wrong?

I think the key here is the scalability of what we are doing. The fact we can do it over time, no huge capital outlay from the start. Many advantages for DIY as there is with Going Commercial. If I had the money I'd do a Tesla Powerwall, but the fact is I can't afford that outlay and don't like loans so for me... It's awesome - and with the extra effort of putting it out there for the masses I paid back my 10k investment in 15.5 months - this project is now cash positive.
The other advantage is that you can replace a bad pack (or cell as you refer to it) if one goes down. Not happening with a commercial product like the Tesla. And surely the warranty on thoseis prorated (only guaranteed for a certain percentage of capacity over time), so not quite as cheap as it might look if you have to replace one.
 

hbpowerwall

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Really is one of those arguments only time will tell..
 
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