Glubux's Powerwall

Glubux

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Joined
Nov 9, 2016
Messages
124
We really love the car, we use it 95% of the time, I think we already saved about 700 on gas!, my only concern is battery degradation, the % drops pretty quiqly but with no measurable impact on the range (went to 89% to 82% of SOH in 7000km...)
We're wainting fo the Model3 with the long range batery...

The powerwall is doing really fine, it produced 3.5 MWh since the beginning and is still very well balanced even with the ballancer unplugged, so far so good !
 

Korishan

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Jan 7, 2017
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Glubux said:
we use it 95% of the time

What? Not even 96%? What about 94%?? :p
 

hbpowerwall

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Good to hear your putting some miles on it, model 3 will be a huge upgrade - you'll need more cells to charge tho lol
 

thanar

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Feb 12, 2018
Messages
154
Any thoughts on another DIY EVSE that would work directly from the batteries (DC-to-DC)? That would be a much more efficient way to do it IMO...
 

Glubux

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Joined
Nov 9, 2016
Messages
124
Yes but no !

To charge a Nissan Leaf direct to the battery you need 400V DC, that's almost 100S! even if I was making a big string with all my packs, I would only get 180V DC and it would be a bit dangerous to say the least...

Charging with a 3.6kW EVSE is fine, you get 13 miles per hour of charge, even with all the losses combined it still way more efficient than a ICE car and it falls free right from the sky!
 

Glubux

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Nov 9, 2016
Messages
124
I tested the new Leaf 40kWh a few days ago, nice EV and less range anxiety !


image_qiscvm.jpg


I'm getting closer to the shorter day of the year and the powerwall still charges to 100% on sunny days, so far so good! I'm charging the car on the grid but it is still 3 times cheaper than gas.
 

Pabickwermert

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Joined
Apr 22, 2017
Messages
7
Glubux said:
Hello Thanar, thank you!

I'm very pleased with the Victron products, they are a bit expensive but totally worth it.
You can charge lithium batteries with a charger if it has an adjustable voltage setting and if it never exceeds the selected voltage : with my Victron chargers I choose 56V max (for both absorption and float) and it give me a steady 4v per cell (14 X 4v = 56V)
The Victron Chargers have Bluetooth so you can change the settings with a smartphone and the Victron APP.
The Victron "cloud" or portal works with the Venus GX, a kind of Raspberry connected to all the others device and with a internet connexion.
I think I have 4500 give or take of Victron products.
One other thing I like is the Victron guys are really reactive and listening to their clients, you have an issue or need some advice, ask on the blog and you have an answer the same day most of the time :)
Wow! I'm impressed! Very professional for a DIY power system. GOOD JOB! I have just started mine, but I hope it to be as neat as yours when I am done. You have inspired me to do better. Being an old panel builder (before my accident) I built large and small control panels for industrial machinery, so I should be able to handle taking on this project. Luckily on a what I can do basis with me being disabled. Thanks for the inspiration!


Glubux said:
Finally done! Powerwall in full sail (cell?) now!
-42 kWh
-7+ kWp of solar panels
-6.5kw output (16 kW peak)
-6300+ Lithium cells
-25 000+ soldering
-600+ meters of busbars
-250+ meters of fuse wire
-2.5+ kg of solder
-678 cell holders (4X5)
-10 000+ cells tested (with only 6 Imax B6!)
-Countless hours of work...



image_enlagf.jpg




One question, how on earth can your real wide shelves hold all that weight of the batteries without bowing in the middle? Please share your secret! Again, great job on your professional looking diy powerwall. If we did not know better, and the batteries did not have multiple colors,we would think it was done by a company and not DIY! Congratulations!
 

Glubux

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Joined
Nov 9, 2016
Messages
124
The shelves are made of thick plain wood they are bowing a bit but nothing to be concerned about.
thanks a lot for the positive comments ;)
 

Liamcaff

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Sep 19, 2018
Messages
1
Just read the whole thread...

Great reading with lots and LOTS of excellentadvice andinformation - notes taken.

Congratulations on a VERY successful journey.

I'm 200 tested cells into my first build.... 6100+ to go to reach your project size :)

Will be keeping an eye on future developments.
 

Pabickwermert

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Apr 22, 2017
Messages
7
Glubux said:
The shelves are made of thick plain wood they are bowing a bit but nothing to be concerned about.
thanks a lot for the positive comments ;)

Cool. I made mine out of 3/4in plywood but mine are not nearly as wide. When I am done, I will have 105.6KWH, so I better get back at it. Thanks for the thread, I have learned a lot from it. :D
 

Pabickwermert

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Apr 22, 2017
Messages
7
Glubux said:
105 kWh! Huge!

Yea, If mycalculations are correct. 1056Ah @ 24vdc. I will have 9000w of solar @ 24vdcto keep it charged up even on cloudy days. I am still installing everything but I have a 5000w 20000w surge inverter running off the battery bank (currently at352AH (35KWH)). Installed is 3600w of solar so far. It has takenme a little bit longer than expected because of holidays and the honey do list stuff. LOL Well, I didn't mean to hijack this thread, so when I can I will start my own with pictures. Again, thanks for the step by steps and the time it took to make this thread. Good Job! Paul
 

Pabickwermert

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Apr 22, 2017
Messages
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Glubux said:
105 kWh! Huge!

Oops, I think I fat fingered the keyboard when doing the calculations.

1056Ah @ 24vdc I believe is 25 KWH

Please correct me if I am still wrong. LOL

:angel:

Paul
 

bertvaneyken

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Joined
Jan 13, 2019
Messages
8
Would you mind sharing your Victron shopping list with us? :)

The small bits are not clear on the pictures.
 

Glubux

Member
Joined
Nov 9, 2016
Messages
124
-4 X Smart Solar MPPT 150/35
- Quattro Inverter 48/8000
-Venus GX
-BMV 700
 

hbpowerwall

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Oct 7, 2016
Messages
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Glubux said:
-4 X Smart Solar MPPT 150/35 -https://www.ebay.com.au/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=Smart+Solar+MPPT+150%2F35&_sacat=0
- Quattro Inverter 48/8000 -https://www.ebay.com.au/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=Quattro+Inverter+48%2F8000&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=Smart+Solar+MPPT+150%2F35
-Venus GX - https://www.ebay.com.au/sch/i.html?...sc=0&_osacat=0&_odkw=Venus+GX+&LH_TitleDesc=0
-BMV 700https://www.ebay.com.au/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313.TR6.TRC0.A0.H0.XBMV700.TRS0&_nkw=BMV700&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=bvm700&LH_TitleDesc=0

If anyone needs the link to said products :D
 

hbpowerwall

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Oct 7, 2016
Messages
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Trying to hang out on my own forum more and as I have nothing technical to contribute I'll just tidy a bit lol been through a bunch of broken links today updating them all.. heeh loving the direction and execution of your project - top stuff mate
 
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