Xuba Electronics: DEAL - 280AH LiFePo4 cells. Purchase & Review
- Thread starter Steve_S
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That sucks, probably meaning Netherlands will not be any different. Does shipping by their own shipping options means there will be no custom fees charged?
Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
Mine came via UPS Express, cudtomes duties etc were all in. Now I am in Canada, I believe that is the case for USA, Canada, UK, Most of EU. This should be verified at time of purchase. I know a few folks reported they had smallish fees due upon receipt but I think that was more for handling or "extra distance" charges.
That was exactly what i thought..
Getting to the point where i feel confident enough to build my own lifepo4 system for my boat as well. I started a new topic with a load of questions. Hope you guys can have a look at it and help me out? I know about building small 12V systems aboard, but a larger 24V system with lifepo batteries is new to me.
diysolarforum.com
Help with my first DIY lifepo4 system
Ok, so i am checking out loads of video's by will, reading through this forum a lot and are ready to give it a go and build my own Lifepo4 System. This is my first DIY lifepo4 system and hoping some of you could have a critical look at the design, the products i intent to buy and use and the...
diysolarforum.com
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Sgt Raven
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You said lipo then lifepo. Those are 2 different chemistries. You have to be careful, words have meanings.Getting to the point where i feel confident enough to build my own lipo system for my boat as well. I started a new topic with a load of questions. Hope you guys can have a look at it and help me out? I know about building small 12V systems aboard, but a larger 24V system with lifepo batteries is new to me.
Help with my first DIY lifepo4 system
Ok, so i am checking out loads of video's by will, reading through this forum a lot and are ready to give it a go and build my own Lifepo4 System. This is my first DIY lifepo4 system and hoping some of you could have a critical look at the design, the products i intent to buy and use and the...
you are right ofcourse, edited it at once
Sgt Raven
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You can use LFP for LiFePO4, too..you are right ofcourse, edited it at once
That’s the beauty of standards. There are so many to choose from! ?
Rdooley79
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For some reason my brain is farting on the cell layout. Is this correct? Do i have the BMS leads connected to the right cell in the pair?
it looks backwards for some reason. What did I mess up?
I pulled the trigger on 16 of these 280Ah cells. Installing them in my motorhome to replace the coach batteries. It's going to be a 24v system. The cells set up for a single 24v "battery" that can be balanced with a single BMS. (Chargery BMS8T 600A) I like the display and no app for mounting in the coach next to my epever charge controller screen.
what will the actual capacity of these be? It's a lot but how much exactly set up like this at 24v? (have to admit I bought the most battery my compartment and wallet could handle not so much on Ah math....)
it looks backwards for some reason. What did I mess up?
I pulled the trigger on 16 of these 280Ah cells. Installing them in my motorhome to replace the coach batteries. It's going to be a 24v system. The cells set up for a single 24v "battery" that can be balanced with a single BMS. (Chargery BMS8T 600A) I like the display and no app for mounting in the coach next to my epever charge controller screen.
what will the actual capacity of these be? It's a lot but how much exactly set up like this at 24v? (have to admit I bought the most battery my compartment and wallet could handle not so much on Ah math....)
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Sgt Raven
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If you're using a single BMS, then what you want is 2P8S. Parallel the groups, first, then put the groups in series.
If I'm reading your chart right, that is what you have.
GMB
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16x3.2x280 = 14,336wh
Rdooley79
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Which BMS layout is correct?
Are the Positives and Negatives correct or should they be transposed?
Blue = Bus Bars
Green = BMS leads
Yellow Box / Numbering = Cell Pair
Black = each 3.2v 260Ah cell
The cell numbering was backwards in the previous post.
Are the Positives and Negatives correct or should they be transposed?
Blue = Bus Bars
Green = BMS leads
Yellow Box / Numbering = Cell Pair
Black = each 3.2v 260Ah cell
The cell numbering was backwards in the previous post.
Sgt Raven
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IIRC, you start with cell #1 negative, then cell #1 positive, cell #2 positive, and so on. Or is that cell #8, first negative & positive?. I can't remember which way they're numbered. Either way they're numbered, the first BMS wire goes to the negative out, then down the battery on each positive in line...
Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
Here is how my Shunbin Pack is assembled. They did it this way to ghost 3 bad cells which I now have to find replacements for so I can break the pack up into 2, 8S packs with each having it's own Chargery BMS8T. Heck of a time figuring out what was wrong but that's aside effect of this configuration... Sorry to tell you this but it is a Bad Idea ! but like my signature says....
vk2emp
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Yep thats correct. That negative line will be on the balance lead though, its not a seperate line. There is always nCells +1 wires on a balance cable (so 4S = 5, 8S = 9, 16S =17).
Heres a quick video I made. Love the colour coded terminal covers that come with CALBS. Makes describing easy. Pointing through a veiwfinder, not so easy!!
and yes I had my phone in landscape. Youtube, WTF? you get the idea though
Heres a quick video I made. Love the colour coded terminal covers that come with CALBS. Makes describing easy. Pointing through a veiwfinder, not so easy!!
and yes I had my phone in landscape. Youtube, WTF? you get the idea though
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vk2emp
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No! Cell 1 negative, then Cell one positive, then cell 2 positive. There will be 5 wires for a 4 cell battery, 9 wires for an 8 cell battery, and 17 wires for a 16 cell battery. Watch Wills video, his are way better quality than my quick phone shoot at 2 am
Have you got your BMS yet?
if so look closely at the pair of the sockets on the control unit (not the display) where the balance plugs go on the bms. It TELLS you what wires go where.
Cell 1 gets 2 wires, a black and a red, then all the other cells down the chain only get one red, connected to positive. When you get to the second plug, on the Chargery's, cell 9 also gets two wires, a black and a red, other than that, its no different to a normal BMS. I have the Chargery 16S, which is the non balancing version of the 16T.
Have you got your BMS yet?
if so look closely at the pair of the sockets on the control unit (not the display) where the balance plugs go on the bms. It TELLS you what wires go where.
Cell 1 gets 2 wires, a black and a red, then all the other cells down the chain only get one red, connected to positive. When you get to the second plug, on the Chargery's, cell 9 also gets two wires, a black and a red, other than that, its no different to a normal BMS. I have the Chargery 16S, which is the non balancing version of the 16T.
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Before we sort out the balancing wires you need to correct the cells interconnections: the busbar between cells 2 and 3 should be on the other side, same for the one for the cells 6 and 7, and the battery terminals are on the center side of cells 1 and 8.
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