LifePo4 battery preparation.

LifePo4 LF280k, torque wrench, EVA foam, batteries, unbox batteries

In this video I unbox the LifePo4 batteries, check the QR code, install the innerscrew. Use the torque wrench to set the right torque of the innerscrew. Once all set batteries are moved towards the frame. All batteries are insulated with extra EVA foam. Compress the cells into the frame.
Spacing between cells, etc

Tools & parts to complete this step:

EVA foam:

Torque wrench model 0.3 to 30 nm

Utility knife:

Shrink tube for busbar: (18mmà

M6 40mm to compress cells into the frame:

Link to all parts and tools used to built the easypowerwall:

Link toward QR scanner:

[UnderGod]

I don't think that the video is too long, it's not something you'll do in a couple of minutes, so I'd rather have to complete explanations and extended steps ;-)
Keep it up!

[Shellyfi]

Nice work, one tip.
You should insulate metal parts of all tools when working with batteries. Wrench shaft and extension are pale metal.

[johnturner]

Great design
Looking forward to see more

[GapWim]

Editing tip: long repetitive seqences (ex: placing all the studs in the batteries) can be a time lapse after one or two real-time examples.

[offgridd]

nice video although it is not forbidden to smile when you are busy with such a nice project 😃. Next week my 40 LF280K EVE cells arrive to make a 18s2p config, combined with 3 victron multiplus2 5000/48 inverters.
Together with a smartsolar 250/100 our house won't even notis a total blackout for weeks😎
Nice touch this EVA foam, I'll be using two end plates pulled together by four spring loaded straps in order to keep the cells on a slight pressure of 150kg. The EVA tape will d3vide the pressure evenly around the internal roll of the kathode.

[davidchristensen]

Interesting. I thought the LF280K cells all had welded studs. I haven't seen any like these before.

[walter--]

Thanks for sharing!
Regarding the EVA Foam; this looks like a rubberfoam; simular to something like Armaflex.
I see here 2 issues;
- did you see a spec relating to heat resistance? The average rubberfoam is not very hear resistant (max 110°c?). I would rather use something that has specs relating to heat resistance. For example a silicon mat (up to 220-230`C) or something dedicated for this purpose.
- these rubber mats are not dimensional stable under pressure. My experience using rubber mats is that they lose their flexibility when under constant pressure. This would mean that you will have to re-apply pressure to keep the cells under a constant compression.

[alanblyde]

Tip I’ve seen it mentioned on other channels to use the blue lock tight on the studs

[PhilippeCJR]

I had in mind the EVE cells had a "B" lasered over the qr?

[JonatanCastro-secondary]

Sorry if I missed it but do you have an estimation of the cost €/Wh considering all materials, BMS, fuses, etc?

[samfish]

You can buy rack battery $1500
5.12 kw no building just
Slide into rack buy 6 for whole house

[dobrzpe]

ok. just sayin' - that battery disconnect is NOT rated for 48v....

[dc]

I have 64 cells of Lf 280k EVE cells. Pushing them together is a joke. If they have to blow they will either swell or explode from the top so compression is a joke. waste of time and resources. Biggest thing is cooler temps and good BMS for each pack. Each pack to busbar.