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Frank's DIY Powerwall
(06-03-2017, 08:11 PM)fprumbau Wrote: But for now I have a question, what do I have to do to have myself
'certified' :-) , earning this nice star? I  post updates every day or so.

The powerwall must be on production, not just building it. The count is for cells saved and Wh generated.

A star is earned by proving you are using Recycled 18650 cells & testing in the 'accepted' manner. Cells don't nessassarly need to be in service - just saved so to speak Smile 
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OK, thank you,  I'll update my cellcount and will document my progress in building my 'first' device.
I have pv already (SMA) and want to sell less and use more power :-)

( I saw you using SMA, too )

As for the 'accepted' manner, I have 2 Imax B6AC v2 (which I'm using testing and loading the larger modules (as of now only bycicle 7s modules I do not want to take apart) and
two Opus chargers, one Bc-4000 expert. For now, I don't know the path to take, either get other 7s modules coming in a perfect-to-reuse packing of 288wh or / and having my own-build modules (very much looking like yours).

For that I would be interested in using a SMA Sunny-Island (I read in works with your bms, too).

Have to mention I saw some ( a lot ) of Jehu's videos. In one of them he mentioned your project and the ONE fault using the best cells for module one, the next best for module too...  I agree to him, and plan to select my module with 'take the best cell and the worst alternatingly', so the modules will should not different only by a very small margin.

I also was very entertained watching all your bus-bar-videos. I plan to take the 4cellx80cell / 100cell  approach, but plan to use loudspeaker wire, tinned already.
This should be very easy to solder. Furthermore I do not plan to twist it. I hope the exchange of single defect cells will be possible...
And I plan to use the 4x5 cell spacers preferably. I do have 400 single ones already, but I do not like the process of putting them together :-)
Great to see another builder in Germany!!!
Viel spaß mit deinem Projekt!
@The-J-Man Oh, vielen Dank!

For now just spending some money ;-)

Trying to do what everyone else is trying, too. Doing everything as showed - but better :-D
Just decided to go with a SBMS120 from ElectroDacus.

Martin Lorton did an excellent test of the predecessor, SBMS100 here and the SBMS8040 (the one before)

The device is NOT for 48V, it goes with 3s-8s and 12V up to 24V with LiIon, LiFePO4 and UltraCaps. It's build quality is to make a 20years life span feasible.

I am very excited to get my device :-D
Chickey, Christian Schneider, hbpowerwall like this post
Thank you for pointing me to Electrodacus an his SBMS project. Even if its pretty useless to me (living in an apartment so no solar panels (yet Wink ) ) and I dont understand everything (noob), I somehow like it.

Best wishes for your Powerwall build!

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