So how many cables in total will I need since I'm stacking 4 boxes?
custom made battery box for eve LF280K cells
- Thread starter sergea
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3 pairs of parallel cables and 1 pair of inverter cables
see here https://docs.rs-online.com/7d28/A700000007957493.pdfI think this is the post he is talking about:
(which has a link to a PDF that is about Amphenol connectors.
custom made battery box for eve LF280K cells
Hrmmm, I'm not sure I agree that it would cost me more to build myself. In either case, for me it's about having the right wire length. I'd also like to know what connectors they're using, I don't want to rely on shipping from china/another vendor if/when I needed to replace them down the road...diysolarforum.com
The cables (and I'd assume the connectors on the box - won't know until I get my hands on it) appear to be futronics:
Energy storage battery connection system_Solution_Shanghai Futronics Electronic Technology Co.,Ltd.
Energy storage battery connection system_Shanghai Futronics Electronic Technology Co.,Ltd.en.futronics.com.cn
I asked about measurements for the connector cutouts (trying to find the equivalent Amphenol connectors so I could just buy them stateside), but I didn't get a useful response (https://diysolarforum.com/threads/custom-made-battery-box-for-eve-lf280k-cells.33814/post-489008)...
Are the amphenol connectors the same dimensions as the futronics connectors and which ones are on the seplos box?
You can also use 3 parallels pairs and 2 pair of inverter cables to a busbar to increase the Amp to you inverter. for example if you have a DEYE 8KW that can charge/discharge up to 240 A, it is better to use 2 pairs of inverter cable.
Yeah, tbh I would have liked if these boxes used 3/0 cable instead of 1/0 but here we are, we can make this work
The ones on my box appear to be the same as the amphenol connectors in the pdf @sergea just linked
This short one is the parallel cable right? While the long one is the inverter cable, correct?
Edit : it sounds like I'm mixing them up. ?
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Yeah, I'm actually going to be using the Deye 12KW Single Phase Hybrid. I'm making payment for it tomorrow.
That is right, the short one with both ends the same connect the stacked units together in parallel. the Inverter cables have battery connectors on one end and ring terminals on the other, to connect from the stack, to your inverter.
that's a great price for 50mm2 cable, a 2M 50mm2 pair cables will cost you 2 x 2 x 15 = 60 + connectors prices >= 100
. I just give up doing my own cable, bcoz it still cost more. the same pairs of cable (with the connector) is 74 US $ only.
For a 12kw inverter I would absolutely run the batteries individually to a busbar and from the busbar to the inverter. I definitely would not parallel them, they are not designed for that load.
do the math you never going to get a better price else where. even by doing it yourself.
so use 2 pairs of cables to be safe, or better to use a busbare connect to each of them. victron has a cheaper version of their lynx power distribution rated for 600A .
If i decide to use busbars and do something like this. Does that mean I won't be using any parallel cables at all. Instead, more inverter cables? (longer it seems). Sorry for many questions, I'm a newbie. Just learning along the way
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they have the power cable in different size, but yes, you connect each battery to a bus bar with a power cable. and the inverter to the busbar with cable with copper lugs at each side. so you need 4 power cable with the same exact size. (make sure they are long enough to connect to the busbar) and 1 cable to connect the busbar to the inverter. don't forget you need breaker/fuse .
they don't know how to process DDP with VAT. so basically I paid 50 $ for shipping 2 BMS and duty except VAT. Then after getting them, I paid around 25 € VAT for each BMS. For me that's OK. I hope you going to have replacement for your BMS quicly.
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You need two busbars, a positive and a negative. From your inverter I would probably run 4/0 gauge cable to each busbar - you can buy these with ring terminals already on them from any solar shop here. then from positive busbar to the positive on each battery (4 inverter cables at the 55mm2 size that seplos supplies), and same for negative busbar.
So altogether
2 x 4/0 cables (inverter positive -> positive busbar, inverter negative -> negative busbar), M10 or 3/8" ring terminals on each end
4 x black inverter cable (battery negative -> negative busbar)
4 x red inverter cable (battery positive -> positive busbar)
seplos cable are sale in pair. the price is for a pair.
Sure, I'm just trying to be clear with the guy as to what he needs and the exact number of cables.seplos cable are sale in pair. the price is for a pair.
