Building a DIY powerwall w Nissan Leaf battery modules
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- Опубликовано: 25 авг 2024
- This powerwall and the way I use it is partially a test of a concept and a backup for when needed. But mostly it’s a fun experiment. With this small solar setup it is not a money saver, but it could be with an inverter (or lots of solar) that could also charge the battery from the grid (for ex during night time, if having such a plan with lower off-peak prices).
Since this is not connected to the grid it makes more sense for an apartment or off-grid situation.
Music: Epidemic Sounds
![ON/OFF-GRID DIY Powerwall build [part0 - battery layout]](http://i.ytimg.com/vi/Yr7vzq8PW70/mqdefault.jpg)
![ON/OFF-GRID DIY Powerwall build [part0 - battery layout]](/img/tr.png)
Very clever .Well done that man.
Beautiful
is this updated up to now? thinking of doing the same.
can I ask what kind of BMS you used please
I used a MESA 6s bms from eBay. 50 or 60Amp. Without Bluetooth since that wasn’t available.
Also good to know that the cells are still balanced, just measured 4 out of 6 (that I could access) and they all showed the exact same voltage. So the bms seems to do it’s job.
Cool
Hello. nice video.if if one wishes to make a bigger battery will there be a need for cooling?
Najs, where did you buy the modules? Thanks
I found a complete leaf battery on marketplace. Bought it and took it apart.
Tidy setup, Have you thought about running 7s ( 3 and a half module's, 29.4 max voltage?
I am also planing to build 3KW 24V system using USED Leaf Modules...
What is the minimum Voltage of the module i have to choose in your opinion? (Since i am going to use used modules)
Thanks
Well, just make sure you use 3 modules in series and then in parallel you use as many as you like.
Minimum voltage shouldn’t go below 3.50v per cell. So a module shouldn’t go below 7.00v.
@@BasinBjorn Tack för videon, den kommer hjälpa mig! Varför bör man begränsa sig till att parallellkoppla tre enheter? Jag är ute efter att nyttja alla batterier i ett liknande pack till min husbåt som kör 24v. Max belastning är 3500w. Vad anser du om detta?
Med förhoppning om svar :)
Truls
@@trulskoch1889 Du kan självklart parallellkoppla valfritt antal moduler. Jag valde 3 i parallell pga att jag hade 9 moduler till mitt projekt.
Och som du redan förstått så blir det 3 moduler i serie. 3*3 = 9.
Modulerna har fungerat klockrent och jag använder de fortfarande.
At last I've found what I was looking for - settings for MPPT controller. Thank you very very much! Does it work like shown in the video? Did you change any settings?
It works just like shown. I just selected “lithium” profile and then adjusted both values to my fully charged voltage. And that’s it.
It still works, nothing changed after that
Hi great video, how would you set up charging from the grid?
Great video! Var finns du i landet?
Stockholm
Great video!! Do you by any chance have a wiring schematic, i would like to complete a similiar build? Many thanks!
Hi, thanks! No i don’t have any of such. But I’m sure you will figure that out, just do one component at a time
What is the model of the inverter that you mounted on the outside, the one where you have you plug plugged in?
Its a Victron Phoenix 24/500. 230v. Max output is 400w. It’s good, silent.
Great video! Can you please share a link to the BMS you used?
The BMS is from MESA components de, I got it from eBay but they don’t sell anything nowadays. I think it’s a German company anyhow. So far it’s worked fine.
@@BasinBjorn I'm a noob. I was looking at a Vicrton MultiPlus inverter/charger. Would I need a BMS too?
in the middle small sense terminal i see there is no bus bar connected , can you connect 3 set bus bar in middle sense terminal configure as 6S intead indivdual wire to bms
I’m not 100% sure of how you mean but the middle row is where the cells balance and for that low current I just use cables and ring shoes instead of bus bars.
What was the cost of the Powerball. How many kw did it create and have you expanded it any further
Well the cost really depends on for what price you would get the leaf modules. I bought a whole leaf pack for about 1300 Euro, sold all but 9 modules and made 2500 Euro from that. Bms maybe 60 Euro.
Then the MPPT cost maybe 120 Euro, Battery protect 65 Euro, Inverter 180 Euro, fuse and cables 30 Euro. The solar panels (100+100+50w) was second hand, think they cost me 150 Euro.
So all and all ~ 600 Euro with the free leaf modules.
After making the video I expanded the solar panels to 100+50+100 watt, so now 250 watts.
That makes about 0.9 kWh per day (sunny summer days)
Total gain so far 96 kWh.
Leaf modules are about £250 a piece. 40kw battery pack. Can't seem to see a whole pack cheaper
If you're safely able to reuse Nissan/NEC batteries, they must have done something right with their design and production.
hi where u buy long bus bar for 6 leafs batttery
I only used the short ones from this battery pack.
You could make your own, with copper bar/stock.
Ha I don’t kown how made bus bar can yr system support up to 400 watt solar