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

Perfect! :)

Since you only have an 8S battery, ignore my advice about the second balance socket, that only exists on the BMS16T.
 
ok, The Chargery BMS not controlling the negative is what is messing me up. It uses a contactor to isolate the battery which I really like.
This is a drawing with the chargery and isolator.

24v Battery Bank Layout w Chargery BMS 1.jpg
 
Yes that is correct. I'd suggest you start a new thread if you need further help discussing your battery assembly as we have derailed this one enough. Steve_S pointed it out, sorry mate.
 
Fair enough!

I finalized the order of cells with Amy. She's very nice and said that they are going to be shipping them out soon. I ordered double the bus bars to double the thickness up. Shipping cost went up two days ago. Corona..... Amy says that they are all doing ok. Glad to hear for sure.

Thanks a ton guys!
 
Steve_S
Thanks for your thread on your build from FLA to LFP. You and others on DIY solar forum have been very helpful in leading the way to better our systems. I am at the crossroads of my build, last purchase is batteries. I have a question re: charge & discharge relays. I believe they make and break through the bms set points as to charging and discharging points protecting batteries? Or your setup with two types of lfp? Or maybe both?
Question re: generator support with inverter/charger. How to control SCC and inverter if capable of charging at same time? Do I disable this function in inverter? Sorry for newbie ? Just trying to get my brain wrapped around this.
Look forward to your progress.
 
Has anyone capacity tested the cells from Amy (Xuba)? The reason I ask is that while discharging them for bottom balancing, one won't handle a 19 amp load while so far, all the others can. All cells arrived perfectly balanced at 3.295/6, and from the video of mine sent prior to shipping, all internal resistances were similar.

Just to clarify what I mean by it not handling a 19 amp load; I am using a capacity tester with the cutout voltage set at 2.7 volts and it immediately reaches the low voltage limit when switched on which is not the case with the other cells.
 
Last edited:
Andy M said:
Steve_S
Thanks for your thread on your build from FLA to LFP. You and others on DIY solar forum have been very helpful in leading the way to better our systems. I am at the crossroads of my build, last purchase is batteries. I have a question re: charge & discharge relays. I believe they make and break through the bms set points as to charging and discharging points protecting batteries? Or your setup with two types of lfp? Or maybe both?
Question re: generator support with inverter/charger. How to control SCC and inverter if capable of charging at same time? Do I disable this function in inverter? Sorry for newbie ? Just trying to get my brain wrapped around this.
Look forward to your progress.
Click to expand...
Not related to the battery buy as such... should be a different thread.
BMS controls when the Relays cutoff or engage based on the settings.
Each BMS controls it's own pack and is configured for that pack, the cells types, thresholds etc. Ea is independent.
Charging with SCC & Inverter/Charger simultaneous varies by hardware type & features/functions. I can do so with my Samlex EVO as it uses an adaptive process to regulate it's output based on line voltages. Different inverters & chargers handle it differently.
 
Andy M said:
Thanks Steve, sorry about disrupting your thread. I guess I have no forum etiquette.
Click to expand...
It's all good, just trying to keep the thread on track, so many side trips makes to hard to follow.
@maharzan Unfortunately no, I am still waiting on the charger unit to charge the cells. Taking forever to get here.... patience is getting tested.
 
Please do update once you start testing... the thread has grown long and has diverted discussions several times, and its hard to followup each comments now.
 
andruby said:
My order was returned to the logistics company because flights from China to Belgium have been suspended. They proposed shipping via UPS which would cost an additional $50 ($189 iso $139). Amy also mentioned this new shipping method would incur customs fees. I hope only the typical 21% VAT will be charged and nothing more. Delivery is expected in 5-7 days.
Click to expand...

collect my order today via UPS France.
very well packaged, but UPS which would cost an additional very expensive 222 Euros
UPS to flee ...
 
HEADS UP ALERT !
XUBA is presently out of stock on 280AH cells as the remaining stock was not up to quality standards.

More have been ordered from the Manufacturer, EVE. There are other companies selling these cells at a close price.

FROM PM with Amy - she responded to me at 23:00 hrs her time !

About 280AH,there are still more than 60pcs batteries of 280AH in our Ware House. Because of the appearance defects, they can't meet the quality requirements, so I directly told the friends from the forum that they are out of stock. Our supplier is in Hubei province (the severely afflicted area). They will not return to work until the end of this month, so our next batch of batteries (5000pcs 280AH) is expected to arrive around April 5. In fact, our boss tried to buy a small amount of batteries from other suppliers to replenish the stock lots, but the quality didn't meet the requirements, so he gave up at last.

In the last week, the logistics has changed very fast. The ordinary Air Frieght and railway transportation channels in all European countries have been suspended. The United States and Canada are normal, but the unit price of freight has risen sharply, and logistics problems frequently occur.
Click to expand...
 
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Steve_S said:
They are made by EVE a pretty reputable manufacturer.
I have one spec sheet I can share. here.
Click to expand...
I read through the spec sheet, but without specifics on orientation. Anyone know if these can be mounted on their (narrow) side? There seems to be some disagreement in forums about this.
I also looked @ EVE's website. But didn't find info. In fact, I didn't find reference to a 280AH cell. Maybe I'm looking in the wrong spot:

LFP battery——Aluminum shell

en.evebattery.com en.evebattery.com
Thank you, Doug
 
Orientation with these should be no issues (just not upside down) as long as the vent can function your good. Upside down may prevent vent from working.
 
Hey Steve - Xuba and EVE should hire you as a Sales Engineer! Well, also Chargery.
Just teasing.
Actually I don't want to create conflict of interest for you as a source of GREAT info!
Thanks again,

Doug
 
andruby said:
My order was returned to the logistics company because flights from China to Belgium have been suspended. They proposed shipping via UPS which would cost an additional $50 ($189 iso $139). Amy also mentioned this new shipping method would incur customs fees. I hope only the typical 21% VAT will be charged and nothing more. Delivery is expected in 5-7 days.
Click to expand...
UPS came by today, but didn't deliver (I was in the backyard, strange that they didn't make more of an effort). I had to pay an extra $67 of fees (import taxes, customs fees, etc). $117 extra on an order of ~$260 is an expensive "corona markup" :-/

The BMS will only arrive in April. Should I already discharge/charge them a little without BMS while keeping an eye on the voltage? Or should they be fine storing them at this SOC for 3 months?
 
I would love to see the internal workings of the LF280 as I intend to rack the cells vertical on the long side as mentioned by DW SD , but wonder about the stresses on the internal plate connection to the terminal. We may also find that the very shallow thread depth could be drilled deeper and re tapped for a better buss bar connection. Wonder if Will is into opening a live cell? Maybe Amy could give a great deal on one of the cosmetic blems.
 
My tracking still hasn't gone live, yet. I keep checking it a few times a day and I'm getting Antsy waiting for it.
Maybe, once it goes live I can relax a little bit..... :unsure:
 
andruby said:
UPS came by today, but didn't deliver (I was in the backyard, strange that they didn't make more of an effort). I had to pay an extra $67 of fees (import taxes, customs fees, etc). $117 extra on an order of ~$260 is an expensive "corona markup" :-/

The BMS will only arrive in April. Should I already discharge/charge them a little without BMS while keeping an eye on the voltage? Or should they be fine storing them at this SOC for 3 months?
Click to expand...
The voltages they are shipped with are for storage, so I would be inclined to leave them alone until you progress to your next step. I was in the same position as you waiting for parts but as I had a capacity tester, I immediately bottom balanced them and then assembled the pack (4S) and recharged it back to an appropriate storage voltage as I wanted to see if I was potentially, going to have a problem with any of the cells. In a perfect world, I should have done a capacity test of each cell but unfortunately, the output of my bench power supply is so low that it would have taken weeks to complete.
 
Sgt Raven said:
My tracking still hasn't gone live, yet. I keep checking it a few times a day and I'm getting Antsy waiting for it.
Maybe, once it goes live I can relax a little bit..... :unsure:
Click to expand...
Mine neither @Sgt Raven.......it's a killer "Shipment information sent to FedEx Friday , 06/03/2020" ?
Will post when anything at all happens. At least we are in the same situation.
 
Steve_S said:
HEADS UP ALERT !
XUBA is presently out of stock on 280AH cells as the remaining stock was not up to quality standards.

More have been ordered from the Manufacturer, EVE. There are other companies selling these cells at a close price.
Click to expand...
Damn! I was going to order them today! Any word on which reputable competitors who are selling the same?
 
Sgt Raven said:
My tracking still hasn't gone live, yet. I keep checking it a few times a day and I'm getting Antsy waiting for it.
Maybe, once it goes live I can relax a little bit..... :unsure:
Click to expand...

Same here so I set email alerts on the Fedex site. Now I only check it twice a day!
 
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