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Xuba Electronics: DEAL - 280AH LiFePo4 cells. Purchase & Review

Sgt Raven said:
Do you really expect Eve to admit some reseller bought up surplus production and is selling it at a discount?

Whether they are or are not made by Eve was never part of the equation for me.

Anyways, it doesn't matter. Either you are getting cells that meet the specs or you are not.
If you're not happy or comfortable buying these cells, then don't buy them.
We have enough buyers on the forums, who have bought and tested them and say they meet or exceed the specs.

Why is that concept so hard for some to except?
Why does this need to be constantly repeated every so many pages? :unsure:
Click to expand...

Easy, was just thinking out loud. i ordered 200 cells of 200 ah myself, so i am also in the game. That said, if i spend thousands and thousands of dollars, i want to be sure what i am getting. These cells can be to spec, but fail in in few 100 cycles, who will say?
The 200 ah cells i bought are also very good, i tested them at 206 ah, so theu are above specs even. Lifecycle, time will tell.
 
Jejochen said:
Easy, was just thinking out loud. i ordered 200 cells of 200 ah myself, so i am also in the game. That said, if i spend thousands and thousands of dollars, i want to be sure what i am getting. These cells can be to spec, but fail in in few 100 cycles, who will say?
The 200 ah cells i bought are also very good, i tested them at 206 ah, so theu are above specs even. Lifecycle, time will tell.
Click to expand...
You're thinking out loud has been covered many times. It is not new news.
It's the "hold the presses, I got a scoop", way it is presented each time.

The 280AH cells I bought tested at 308AH, which is plus 10%, and yes time will tell....
 
Jeremiah said:
I'm planning to get 18 of the 280AH cells.
Can anyone who has purchased 16 pieces of the 280AH cell tell me what the dimensions of your box was? If you know the weight that would rock too!
I'm trying to get estimates from freight forwarders; I know the sizes of the cells obviously but not packed and all safely tucked away.
Thanks in advance anyone!
**** edit ***
or if you got 8 pieces tell me that please; should be fairly close to just double the size.
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Jejochen said:
Easy, was just thinking out loud. i ordered 200 cells of 200 ah myself, so i am also in the game. That said, if i spend thousands and thousands of dollars, i want to be sure what i am getting. These cells can be to spec, but fail in in few 100 cycles, who will say?
The 200 ah cells i bought are also very good, i tested them at 206 ah, so theu are above specs even. Lifecycle, time will tell.
Click to expand...
Yeah, crazy eh? Just trying to tell people somethings not right here and getting the unjustified backlash is a head scratcher.
 
LukeVader said:
Yeah, crazy eh? Just trying to tell people somethings not right here and getting the unjustified backlash is a head scratcher.
Click to expand...
Exactly whom 1st claimed they were definitely Eve battery cells? Or was it just someone guessing that they might be.
If they are, for some reason Eve wants plausible deniability about them.
On the other hand, there is nothing shocking about buying clones from China.
Many times those clones are made on the same equipment by the same workers.

I'd really like a show of hands how many people bought them because they thought they were Eve cells?

For myself, I bought four 280AH LiFePO4 3.2V cells and that is exactly what I received.
What is not right about receiving what I was sold?

The person you quoted said they didn't buy them, but bought two hundred 200AH cells from somewhere else.
That was one hell of an order, if for personal use.
Since we know XUBA does not sell 200AH cells, was there some friction between the poster and XUBA?
What was their purpose for raining on this parade? Do they have an axe to grind against XUBA?
 
Sgt Raven said:
Exactly whom 1st claimed they were definitely Eve battery cells? Or was it just someone guessing that they might be.
Click to expand...

Seriously, you don't remember the whole blowup here earlier?? https://diysolarforum.com/threads/x...lifepo4-cells-purchase-review.3850/post-65505

Definitely claiming EVE cells.


I'm starting to think yeah these are maybe EVE cells but they didn't make their grade A cut, so they sell them to other sellers at a major discount. I don't know about you but I believe my 8 cells definitely don't qualify as grade A cells. The voltage bleed on these things are definitely over the specs EVE claims. That definitely is a trait of grade B cells
 
LukeVader said:
Seriously, you don't remember the whole blowup here earlier?? https://diysolarforum.com/threads/x...lifepo4-cells-purchase-review.3850/post-65505

Definitely claiming EVE cells.


I'm starting to think yeah these are maybe EVE cells but they didn't make their grade A cut, so they sell them to other sellers at a major discount. I don't know about you but I believe my 8 cells definitely don't qualify as grade A cells. The voltage bleed on these things are definitely over the specs EVE claims. That definitely is a trait of grade B cells
Click to expand...
Where was the first post claiming they are Eve cells. That was page 31 of this thread. Y'all are making the fuss.
Where was it advertised, that you think you didn't receive what was advertised? Who has received defective merchandise?
I have not seen any place on Alibaba or XUBA claiming whose cells they are.
Was that the reason you bought them?

What voltage bleed off are you seeing and at what voltages? What is your testing method?
Is it a problem in the heart of the curve or at either end? IIRC, we had to walk you through just parallel balancing your cells.
Explain the scientific method you are using for your tests. Is it the same method a lab uses when they make a report on them?
I know darn well I don't have the proper equipment to run the same tests a proper lab would run.
I do know that I input to my BMS I had a 280AH battery and after discharging it from 13.9V to 12.8V my BMS thinks it is a 308AH battery.
That is 10% over the claimed capacity and falls right inline with new cells built into a battery.

I question it, when someone comes in makes a drive by, fires off a couple of shots and drives off.
Who or whom are they trying to make trouble for?
I don't believe they're doing it from the goodness of their heart or are really concerned about what I received from XUBA..

I think I have read just about every post in the 2 big threads on these cells. Eve or not was never a part of my decision to buy or not.
Other than a few receiving damaged cells, I don't think I have read any posts of someone unhappy with the quality what they got.
 
OK, I went back to the 1st post on this thread. The first place I saw Eve at all was post 265.
Me thinks there is some sour grapes posting going on. I would buy 4 more of these cells without a hesitation at all.
 
dude, chill out. i posted on an other thread i bought these 200 cells at deligreen, that is not a secret. i have no friction against xuba or anyone else, don't speculate away. the reason i bougth as many cells is because me and a few solar enthousiasts teamed up for an order to keep shipping costs low. I just today sold all my 200ah cells by the way, to buy 280 ah cells instead. Yes, with Xuba. excuse me for being a sour grape :rolleyes:
 
Sgt Raven said:
Where was the first post claiming they are Eve cells. That was page 31 of this thread. Y'all are making the fuss.
Where was it advertised, that you think you didn't receive what was advertised? Who has received defective merchandise?
I have not seen any place on Alibaba or XUBA claiming whose cells they are.
Was that the reason you bought them?
Click to expand...

I don't know about your purchase but my seller Rain told me these were EVE cells from the very first interaction with them. I cover it in my review thread. I was also told grade A!

Sgt Raven said:
What voltage bleed off are you seeing and at what voltages? What is your testing method?
Is it a problem in the heart of the curve or at either end? IIRC, we had to walk you through just parallel balancing your cells.
Click to expand...

It doesn't matter what voltage I've charged these cells to, they have never stayed there. According to the spec sheet itself its supposed to hold Capacity Retention≥95％ and by going off the voltage rate (which is all I have to go off of right now cause my load tester STILL is stuck in the mail somewhere) these batteries don't hold all the power. Every day all these cells voltage has dropped just sitting there resting. Thats why I stated "I believe my 8 cells definitely don't qualify as grade A cells." I'm entitled to my opinion arent I??? And FWIW you did not have to walk me through parallel balancing cells, I knew how to do that, all you did was encourage me that it would take longer. Big difference.

Sgt Raven said:
Explain the scientific method you are using for your tests. Is it the same method a lab uses when they make a report on them?
I know darn well I don't have the proper equipment to run the same tests a proper lab would run.
I do know that I input to my BMS I had a 280AH battery and after discharging it from 13.9V to 12.8V my BMS thinks it is a 308AH battery.
That is 10% over the claimed capacity and falls right inline with new cells built into a battery.

I question it, when someone comes in makes a drive by, fires off a couple of shots and drives off.
Who or whom are they trying to make trouble for?
I don't believe they're doing it from the goodness of their heart or are really concerned about what I received from XUBA..

I think I have read just about every post in the 2 big threads on these cells. Eve or not was never a part of my decision to buy or not.
Other than a few receiving damaged cells, I don't think I have read any posts of someone unhappy with the quality what they got.
Click to expand...

I would hardly qualify jejochens comments a drive by. It was all valid comments they made and was adding their experience to the conversation just like I am. Just cause you don't like the comment doesn't mean you get to get up on some bolding horse and rain down terror on him with a snarky superior tone telling him stuff like if you don't like them then don't buy them. What are we here? Three years old? And quite honestly I don't think anyone's concerned about what you received from XUBU either. Your money, your problem, just tell them what your experience is and move on.
 
LanduytG said:
WOW!!!!! I can't believe it. I ordered my 12 280ah cells from Amy just this past Friday. Just checking my email before bed and she sent tracking. These were to go see but they are going FedEx air and tracking says I'll have them on Monday. I hope that's right but Murphy is going to have a hand it I'm sure. She sent a pic of the cells packed. Very well wrapped and only 2 cells per box.


Greg
Click to expand...

Please post after they arrive and you get a chance to check them out. If all looks good I'll be duplicating your order.
 
Just did a 2nd test from 57.6v (3.6) to 48.5v (cells between 3.1 and 2.85) and got 270ah / 14.1kwh recorded on my Victron BMV-712. I'm sure I'd hit 280 if I'd go lower, but now happy with the performance tests and will adopt a more conservative cycle per Wills sticky post.
 
LukeVader said:
I don't know about your purchase but my seller Rain told me these were EVE cells from the very first interaction with them. I cover it in my review thread. I was also told grade A!



It doesn't matter what voltage I've charged these cells to, they have never stayed there. According to the spec sheet itself its supposed to hold Capacity Retention≥95％ and by going off the voltage rate (which is all I have to go off of right now cause my load tester STILL is stuck in the mail somewhere) these batteries don't hold all the power. Every day all these cells voltage has dropped just sitting there resting. Thats why I stated "I believe my 8 cells definitely don't qualify as grade A cells." I'm entitled to my opinion arent I??? And FWIW you did not have to walk me through parallel balancing cells, I knew how to do that, all you did was encourage me that it would take longer. Big difference.

And quite honestly I don't think anyone's concerned about what you received from XUBU either. Your money, your problem, just tell them what your experience is and move on.
Click to expand...
Dude, you're in the thread about XUBA 280AH Cells. You didn't buy what ever you have from them. Why are you commenting on what they are selling? I think people buying cells from XUBA care what I received from XUBA. You don't have a single thing to add about what XUBA is selling!

Now run along back to a thread about Your cells and your seller, because you don't have anything useful to say about XUBA.
 
ENOUGH Bull Hooey !
Asking Admins to lock this thread. Sorry that I started it, with the idea of helping folks and it's turned into maximus sillyus with a dose of idioticus.
----
More assembly and config is being done with new tests and new relays etc but it won't be posted to this mess.

BTW: I'd like to thank those with POSITIVE & CONSTRCTIVE Contributions but this has gone of too far and the sidetracks & diversions have corrupted the usefulness of this thread. Maybe that was the point of the disruptors...
 
Delta-V said:
Another RTFM moment. Below is a chart from the EVE 280Ah Product Spec PDF :

I thought I saw about 26.70V (3.337V cell) lingering for a while during my test for the upper plateau.

Maybe I'll do my next test with 26.4V to 25.2V (3.30V to 3.15V per cell) and see what the usage percentage would be. Seems to be a happy medium for an average C-rate.

View attachment 10948
Click to expand...
Anyone questioning about these cells holding their voltage, this chart falls right in line with my testing. I was running a 5.5A load about 1/3-1/2 the time as the compressor kicked on and off. I started at 13.9V and it dropped to 13.4V in 2 hours. After that it stayed there for days, till it dropped to 12.8V six and a half days later. My test tracked this chart fairly well.

There is not much capacity from 3.65V per cell to 3.35V per cell.
 
Steve_S said:
INFO for Australians / New Zealander's

I was in chat with Amy @ my 3:30AM and mentioned how several folks from down under are dismayed by S&H costs, they are shocking IMO... She said that this is not within their control as the various couriers set their rates. Now she did say, that shipping by Sea is much cheaper but can take longer for obvious reasons. If you really need them fast then your stuck but if time is no problem, Sea may be an option. I imagine this applies to everything coming out of China but these batteries being so heavy, it just plain & simply SUX.
Click to expand...
Hi Steve
As one of those Australians I suffer this a lot but my main issue is the disparity between AliBaba and AliExpress. For example 4 by 150a LiFePO4 shipped by AliExpress (BLS) cost me USD50.45 but the exact same with AliBaba (Xuba) costs USD162. Both ship from the same region so I do not think it is just the way it is. Something is wrong.
Regards
 
I just got a used Alinco DM-330MVT 5-15V 32A PS to run some 12V radio gear. Was messing around testing it. I installed a fused Anderson Powerpole for that purpose. Had it on the bench and looked at my battery which has a PP as a way to hook things up. Thought lets see what this will do. I was at 13.5V on the battery. It started out throwing 12A at it and quickly started dropping as the Voltage went up. Watched it for a little while and grabbed my tablet to look at the BMS readout. The new PS acted just like my bench one in CV mode. Only it has 3 times the amperage output.


I'll let it sit for a while and check to see if some of that is just a surface charge. Does LFP batteries do that like a LA battery does?
 
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