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dbyers248

New member
Joined
May 6, 2020
Messages
5
this may have been touched in the thread, but with such a larger system 30Kwh,50Kwh how many inverters are needed or is there one main source? sorry if the answer is here already. totally new to this.
 

hbpowerwall

Administrator
Joined
Oct 7, 2016
Messages
2,001
Wayne\ said:
Hey Pete. A thing I want to ask you about your system. I've watched a lot of your vids (so maybe I've forgotten haha). If you've covered them already, please share a link, and I'll have a read, or a watch.

With regards to the Batrium BMS and Longmons - I think I have a handle on how they work, but what I don't understand is why you have to periodically disconnect the system and spend days balancing. Is this not what the Batrium system is supposed to do, or is it just the current capability of the Longmons isn't enough to keep up. Do packs only go majorly out of balance because of a faulty cell(s), mismatched cells, or are there other reasons?
My issue is load - We use a lot of energy and even with 9wk of solar it still doesn't charge the batteries every day so batteries don't balance ALSO these cells were really poorly built so some have now got heaters and the batteries them selves are very imbalanced these days (currently working on fixing this) I also have my WM4 setup so it doesn't waste too much energy so have it starting to balance at 4.1v if I changed that to 4.0 volts balance would be much better all the time. End of the day my build quality was and still is in a BETA state lol
dbyers248 said:
this may have been touched in the thread, but with such a larger system 30Kwh,50Kwh how many inverters are needed or is there one main source? sorry if the answer is here already. totally new to this.
is not the size of your storage it's the size of your load - 2x your max expected load and you'll have enough inverters
 

TheBatteries

Administrator
Joined
Oct 8, 2016
Messages
2,116
the download link of the CAD files for the mounting-system seems to be down, maybe because of the new forum software update?

Does anybody can provide the "normal" 80p version CAD files? I would like to ask around in my region if someone can do this kind of work

I reuploaded the CAD files I saw on page 1 as attachments. Can you please try again?
 

hbpowerwall

Administrator
Joined
Oct 7, 2016
Messages
2,001
working again thanks @mike
 

hbpowerwall

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Oct 7, 2016
Messages
2,001

Stefanseiner

Member
Joined
Apr 16, 2020
Messages
128
thank you.
I tried to build your mounting system for my own, without CAD
18650_Mounting_System_16s100p_24.jpg

18650_Mounting_System_16s100p_28.jpg

-> more images at my thread
 

hbpowerwall

Administrator
Joined
Oct 7, 2016
Messages
2,001
Love the idea, less metal more modular - great idea !
 

Bib60

New member
Joined
Mar 6, 2021
Messages
17
Hi
Thanks for the files for your powerwall bracket.
I didn't have idea to how to fix on my wall my 30 packs 13S10 ;-)
I just need to change some dimensions for my packs, wich free software can i use to modify ?
I know somebody who can cut this with the laser machine.
Thanks a lot
Laurent from France
 

Bib60

New member
Joined
Mar 6, 2021
Messages
17
Hi
What is the thickness and material of powerwall bracket ?
Thanks a lot
Laurent
 

hbpowerwall

Administrator
Joined
Oct 7, 2016
Messages
2,001
i think it was 0.3 mm all i have is listed sorry
 

hbpowerwall

Administrator
Joined
Oct 7, 2016
Messages
2,001
Ok sorry mine was 1.5mm steal plate.. sorry it's been a while
 

Wayne's World

Member
Joined
Jan 28, 2020
Messages
86
I spy a photo of Pete's battery wall (a portion of) in a recent Electronics magazine - Silicon Chip, March 2021 page 21.

The article is for a High-Current Battery Balancer build. Up to 4S cascadable.
 

hbpowerwall

Administrator
Joined
Oct 7, 2016
Messages
2,001
I spy a photo of Pete's battery wall (a portion of) in a recent Electronics magazine - Silicon Chip, March 2021 page 21.

The article is for a High-Current Battery Balancer build. Up to 4S cascadable.
I tore strips of them for that, demanded payment - also destroyed his stupid idea of needing a high current balancer rather than fix the battery that needs that much balancing.. They didn't reply but did change the image.
 

slimf

Member
Joined
Sep 26, 2017
Messages
193
Don’t go to hard on them.. they just blokes doing what they love and trying to make a living. That mag must be a bastard to produce month in month out..
 

hbpowerwall

Administrator
Joined
Oct 7, 2016
Messages
2,001
Care to know how long it took to create that battery and take that single photo? Also that so-called expert plans on hiding issues with batteries not fixing them.. Drives me nuts the people that try to profit in any way from time and effort.. Also using my photo implied his BMS was used on it. .. That said it's good they took it down quickly - pitty they didn't reply tho...
 
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