hummmingbear
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I would advise folks to stick with the tinned copper bus bars that come with the EVE cells. Some tests in off-grid garage show issues with aluminum. Thoughts?
custom made battery box for eve LF280K cells
- Thread starter sergea
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It looks like the max wire size for those connectors is 50mm2 which is what they provide. I guess you wouldn't be able to use the full current rating of each pack if you stack them and daisy chain them in parallel server rack style.
hummmingbear
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So they actually come with Futronics connectors, not Amphenol. The Futronics do not fit any of the Amphenol (nor would I want to mix brands) and I was unable to find where I could purchase any matching Futronics connectors in the states.
I ended up buying the amphenol terminal connections which are an exact fit for the case along with the plug that I can crimp. I am just using one negative and one positive per-case. I will not be chaining them. Amphenol connections were expensive and very well built. I still prefer to make my own cable that is an exact fit rather than a generic size from seplos...but I paid a penny for it.
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Looks like those can only do 200A too. I wonder if there's something that can do 300-400A in the same footprint.
hummmingbear
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As far as I know 200A is the max amperage (from amphenol at least) that fits the profile of the box. I have 4 battery boxes in parallel and I don't plan on pulling anywhere near 200A from each box, I could see how one might need that if you only have 1 or 2 boxes. Keep in mind they are rated for continuous output. Short spikes above 200A would be fine but it might trip your breaker/fuses depending what you have.
Seplos Chris Ren
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There're actually 6 temperature sensors, four battery cells temperature sensor on the PCB wire,
one ambient sensor and one bms temperature sensor on the bms board.
Is it possible to see a picture of your set up? I'm also planning 4 battery boxes
hummmingbear
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I'm away until late August and sadly didn't take any updated photos of my setup, I'll be sure to post a build album then.
I'm on the verge of ordering one of these via Henry at Seplos. I'm just waiting to hear back from Jakiper before I pull the trigger.
Quick question. As there is no built in isolator would this be a sufficient breaker/isolator for this battery to sit between the battery bank and the inverter.
Quick question. As there is no built in isolator would this be a sufficient breaker/isolator for this battery to sit between the battery bank and the inverter.
houseofancients
Solar Wizard
this isnt a dc breaker as far as i can see, and may fuse..
It does state "Widely Used: Solar panels grid system, wind and solar hybrid system and many other DC systems, household decoration, engineering construction, rural network transformation and other projects." in the description. I was thrown by it only being 125A with the Mason being 200A.
My options are limited in the UK. We are very much behind the curve.
hummmingbear
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I used one of these for each battery: https://www.amazon.com/dp/B09JS22RJC I wanted something that was 2-pole. I won't pull/push more than 160A from each box so this was fine for me
Has anyone successfully purchased the futronics connectors to make your own custom cables?
I think they are these ones: https://en.futronics.com.cn/product/88.html but would like to be sure before I order them.
Seplos will not confirm the connection type or any other details. They took 4 months to deliver my airfreight boxes, so I do not trust their estimate of 1 month to deliver custom cables. It is also much better to be able to customize any future changes in the battery position and placement by having the ability to make custom cables.
I think they are these ones: https://en.futronics.com.cn/product/88.html but would like to be sure before I order them.
Seplos will not confirm the connection type or any other details. They took 4 months to deliver my airfreight boxes, so I do not trust their estimate of 1 month to deliver custom cables. It is also much better to be able to customize any future changes in the battery position and placement by having the ability to make custom cables.
hummmingbear
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If you have any luck let me know. I tried to reach out to Futronics but my email got returned. Seplos doesn't seem to want folks to make their own cable and instead buy theirs which is quite annoying. As I mentioned above I replaced my connectors with Amphenol but it was expensive.
hummmingbear
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And FYI I believe it would be energy storage connector 6.0, not the 8.0 you linked (based on the measurements)
One of these two
Energy storage connector 6.0 Single core elbow connector (IP678)_Shanghai Futronics Electronic Technology Co.,Ltd.
Energy storage connector 6.0 Single core elbow connector (IP678)_Shanghai Futronics Electronic Technology Co.,Ltd.
Photovoltaic energy storage connector 6.0 Single core elbow connector TUV (IP67B)_Shanghai Futronics Electronic Technology Co.,Ltd.
Photovoltaic energy storage connector 6.0 Single core elbow connector TUV (IP67B)_Shanghai Futronics Electronic Technology Co.,Ltd._Energy storage connector is one of the main products of Shanghai Futronics Electronic Trchnology Co.,Ltd.with good price and quality, factory direct sales. Our...
If that is the case it is only rated up to 125A ?
They claim their custom cables use 50mm wire. The 6.0 connector tops out at 25mm and 125 amps while the 8.0 connector goes from 25mm-70mm and would fit the claimed wire size and amp draw.And FYI I believe it would be energy storage connector 6.0, not the 8.0 you linked (based on the measurements)
One of these two
Energy storage connector 6.0 Single core elbow connector (IP678)_Shanghai Futronics Electronic Technology Co.,Ltd.
Energy storage connector 6.0 Single core elbow connector (IP678)_Shanghai Futronics Electronic Technology Co.,Ltd.en.futronics.com.cn
Photovoltaic energy storage connector 6.0 Single core elbow connector TUV (IP67B)_Shanghai Futronics Electronic Technology Co.,Ltd.
Photovoltaic energy storage connector 6.0 Single core elbow connector TUV (IP67B)_Shanghai Futronics Electronic Technology Co.,Ltd._Energy storage connector is one of the main products of Shanghai Futronics Electronic Trchnology Co.,Ltd.with good price and quality, factory direct sales. Our...en.futronics.com.cn
If that is the case it is only rated up to 125A ?
I sure hope they are the 8.0!
hummmingbear
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It looks like they could fit. This is the diagram for the amphenol: https://www.amphenol-industrial.de/upload/slprbxpxx-customer-drawing-cdr.pdf which fits the box and is 21mm between screw holes
Futronics Left, Amphenol Right
And FYI I believe it would be energy storage connector 6.0, not the 8.0 you linked (based on the measurements)
One of these two
Energy storage connector 6.0 Single core elbow connector (IP678)_Shanghai Futronics Electronic Technology Co.,Ltd.
Energy storage connector 6.0 Single core elbow connector (IP678)_Shanghai Futronics Electronic Technology Co.,Ltd.Photovoltaic energy storage connector 6.0 Single core elbow connector TUV (IP67B)_Shanghai Futronics Electronic Technology Co.,Ltd.
Photovoltaic energy storage connector 6.0 Single core elbow connector TUV (IP67B)_Shanghai Futronics Electronic Technology Co.,Ltd._Energy storage connector is one of the main products of Shanghai Futronics Electronic Trchnology Co.,Ltd.with good price and quality, factory direct sales. Our...
If that is the case it is only rated up to 125A ?
Can anyone confirm or refute this? Was literally just about to buy one.
hummmingbear
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I think I was initially wrong, based on the diagram I posted I would say the 8.0 looks right. If someone can measure the width of their futronics connector in mm that would tell you (I'm away so I can't).
Did you find a place to buy futronics connectors?
Cheers. Worse case I can swap them out for something suitable.
