New BMS from IC GOGOGO Store / E&J Technology Group

Yes, of course, that's why you have a BMS after all

So then that require some manual actions, but the vast majority of the time you shouldn't have to do anything manually.

If you (fhorst) can't live with that then just use a separate port BMS, nobody is forcing you to use a common port BMS. But don't say common port BMS are useless just because you don't want to use them in your particular case, a lot of people are perfectly fine with using them.

BiduleOhm said:

Yes, of course, that's why you have a BMS after all

So then that require some manual actions, but the vast majority of the time you shouldn't have to do anything manually.

If you (fhorst) can't live with that then just use a separate port BMS, nobody is forcing you to use a common port BMS. But don't say common port BMS are useless just because you don't want to use them in your particular case, a lot of people are perfectly fine with using them.

Click to expand...

I say that the Chargery who is separate port by design and can be used (out side design) with common port, is not a good solution for a common port setup.

Common port doesn't just shut down the whole port, it just stops charging or discharge.

When you use the Chargery in common port setup, it's shuts down the whole port.

And yes, that 2% of the situation is important.
My wife can't fix it when I'm away for several weeks.

If you have read my posts, you know that defective BMS already damaged 31 of my cells.
(I damage one by my own by recharging it wrong after capacity test)

Now there will be 17 good cells, and 31 who are little puffy.
As they are probably little overcharged, they will get quicker out of balance, especially in the lower charged regions.
Difference of 0.3 volts or more is to be expected.
(One cell at 2.5, rest (or most) at 2.8 or higher)

Something the BMS should have prevented.
Especially as the charger was set to 54.4v as limit, that is 3.4 volt at bulk charge and 53.5 as float.
(3.35v)
Constant voltage of 3.35v per cell should not have overcharge any cell.

That makes the Chargery useless as replacement in my setup.

My setup have MPPT inverter, a personal choice that really does have its benefits over 2 separate systems.

As result it can use only common port BMS.

The setup "invented" by Chargery to make separate port function in common port installation is a workaround.
Not a real solution that should be advertised.

For that simple reason.

Would you let anyone without any electronic knowledge reset your relays?
My son when he was 7 Yo probably had more understanding of electricity then the average Thai person.

And I would not have let him fix the problems made by this "workaround"

We talk high power here.
Anything else then a switch as simple as a light switch is not advisable.

Ok, so use a separate port BMS, as simple as that

What was the voltage on each cell after the BMS disaster?

Lol..
Yes use common port BMS as my MPPT inverter have 2 lines to the battery.
One negative one positive wire.
That is all.

As result, common port where charge and discharge go over the same port



This is "direct" after the failure.
(I tried a reboot of the BMS)
The voltage is, as you can see, for the cells shown, quite normal.

Also, the one cell who I damaged by my own shows the need for a system that doesn't get in the 2% range..



I don't have a picture overcharge the batteries.
If I did I would not make pictures but stop the overcharge....

Once you disconnected the BMS, what were the voltages of the cells?

This one will replace the BMS.

Dis-balance due to the puffy cells will be compensated by the balancer


Provided free of charge , together with discount price to compensate the problems from the previous BMS.

Thumbs up for this store
(Good available via WeChat)

First off let me say Im truly sorry you had issues it sucks to pay a lot of money for things and then have them ruined.

Keep us informed of how the Daly works for you. I have no problem with it. I would like to know however how it performs with a high amp draw.

Sorry to hear, to what happened here, I will need to keep an eye open to see if mine will act up if it's defective from manufacture, I know for sure though if you have a bad cell in the pack, it needs to be removed immediately so that it would not affect the charging or discharging of the full pack. That goes for any kind of batteries. That's my moto.

@Dennis , I agree on replace as soon as possible.

immediately is only possible if you have spare at hand.
and I don't.

as we live off grid..
there is no backup line.

For sure I did capacity test on the overcharged cell, and it gave little over 145Ah. ,that's a loss of 7 Ah at this time.
Its not lithium danger to explode.

gives simple choice:
A use only 152Ah
B use 304 Ah where the active balancer will have harder time to keep one cell in balance in the lower regions.

I choose B as normally, the lower regions (under 10% charge) will Not happen.

And yes ordered new replacement.

Once arrived, this cell will get second Life at my gas water heater.
That have battery based starter (2 D cells) and likes to eat them...
Before it draws that one empty..
Charge (top up) once a year and it can be used long, really long.

I still think that option B was the correct call.

And for sure not the root of the problem.

My best guess...
27 * 330watt panels giving their power little after noon..
Close to 75 -85% production
Roughly 7500 watt, that's +5000 into the batteries, getting close to (or little over) 100A.

While rated for 150A...
It is probably not a coincidence it happened at that hour.
The BMS was set at max 100A charge and should /could stop charging on higher current.

For the lifepo4, they're capable of 0.5 C
The 304Ah was with 100A only at 0.35C

I just tested the voltage of all the cells (or better parallel pairs)
First and last cell are at 3.31v the other 14 are at 3.30 volt.

The locally ordered 120A Daly BMS will hopefully arrive this weekend.
Then the system can work from the lifepo4 again.

In 10- 14 days the 250A daly + balancer.
I expect the new 17 cells to arrive at the same time.

My new setup for will be 2 different battery array.
One of 152 ah with only brand new cells and the 120A Daly (sadly not monitored)
And one with the 32 cells I now have (and the real puffy one replaced) with active balancer and 250A Daly.

My Revo II MPPT inverters will be one set in parallel for 6.4kw load
And one 3.2 KW

It's clear what battery array goes where

Depending on the need, I can use the stand alone Revo II to feed via AC the 2 in parallel to balance out the battery usage.

But that's future.

Still...

I am impressed with the balance capabilities of the active balancer!!!

Without any load or charge, you can see the cells getting pulled close to each other till total balance within 0.05 volts.
It doesn't burn of the higher ones to match the lower, but really transport the stored energy from cell to cell.

You can see the lower cell voltage slowly go up.

As active balancer...
They surely have my vote!!

As active balancer with BMS function..
Sadly but understandable based on my experience.. NOT!

I understand your point, and I would not like the same to happen to me, I will keep this in mind and it's always nice to have new feedback on something that is new to me. ( LFP & BMS.)

I didn't receive my batteries yet (32*280ah), or my bms 2* (24s 2a 300a) which will be 2 pack parallel.

Denis said:

my bms 2* (24s 2a 300a) which will be 2 pack parallel.

Click to expand...

2 BMS in parallel??
I have no experience with it, but I've heard that it is not advised to do.

I received the advice make 16 cells and 2 cells parallel (560Ah), with one BMS

Apparently 2 BMS can conflict

fhorst said:

2 BMS in parallel??
I have no experience with it, but I've heard that it is not advised to do.

I received the advice make 16 cells and 2 cells parallel (560Ah), with one BMS

Apparently 2 BMS can conflict

Click to expand...

While I do not see a problem with 2P86 there is also no problem with using seperatee BMS on 2 distinct 8s batteries. I actually think it is preferable this will provide redundancy if one battery goes bad. But the caviat is that each individual BMS needs to be able to handle the max p[possible load.

Almost about to click buy on this BMS, I guess I'll stick with the 250A Daly BMS

Capt Bill said:

...

I did see an informative Will Prowse's clip titled: DIY 48v LiFePO4 Battery w/ $72 Bluetooth ANT BMS (low temp cut-off!)

with a specific learning curve tip on how to turn on that BMS ... at about 7:20 mins into clip (not sure of Amp Rating for $72?)
...

Click to expand...

@fhorst man when I saw your post about the cells my heart went out to you.
That's so lame, and after the other $4.5k got ruined. Sorry man.
After the empathy ended I felt fear for myself. LOL. So ...
Regarding that BMS Will reviewed (above), it looked really cool. I watched that vid a couple times last week. I've got it in my basket online to order. I noticed his video no longer has a link up to it in the details section. Does anyone know if something happened (or maybe just the seller link expired) with it or has anyone else here tried it?
This is my first LiFePO4 build and I hate to risk messing something up.
It looks awesome for the price, the only thing I'm a little bummed about is the 50A charge rate limitation. Does anyone know if they make another version of the same BMS Will reviewed but with a higher charging capability?
So can you guys help me, is this the same one Will reviewed above.
So is this the same BMS with different options? I'm a bit confused because of the same way to activate it etc or are they just all cloning some BMS firmware?
OK newbie question; the 50A limitation on charging, if the charge controller is 60A this should be fine right? (I'm thinking still like a lead acid guy); in other words is this an internal resistance sort of thing that's limiting the Amps or is the BMS actively policing and ready to disconnect the battery if this number is exceeded?
Thanks

I liked this ANT BMS also at start, even ordered it.
Apparently no stock, what made me look for different product.

The BMS with active balance seems like a match made in heaven...

And the active balancer part, it really is great.
BMS part...
It should be able to handle 100A Charge, should be.
But it stopped functioning during higher charge, above 70A.
Exact, I can not say.
For sure little below 100A.

I don't do the marriage anymore.
I just take 2 systems.
Daly 250A BMS.

Realistic I never will charge above 100A
And never discharge above 190A
The 250A Daly should be good.

Daly have high quality and good reputation.
Sadly no Active balancer.
It will burn off the difference between the cells in heat.
Not really efficient.
Even that the cells normally don't have huge difference between them, it's still not efficient.
Sadly also no monitoring function


The active balancer have BT.
I can see what's going on.
For me, that is important.

Normally, people should not need to care.
It should just do it's job.

Recent events made me realize that should and do is not the same.
Only way to know if it does what it is supposed to do is monitoring.

Monitor, confirm, keep under investigation for a while if all is OK, then after that...
Yes, forget about it, and just use as it is supposed to be

Hello Fhorst, I'm really sorry to read your story.

I was looking for this active balancer BMS for the same reason than you : high charge current rate (and monitoring).
The Ant BMS can only charge at 50A max and I need 72A to mach my solar panels production. So the new BMS seemed the answer, but after your unfortunate experience I don't think it was really a good idea.

How is the daly BMS working so far ?

oops sorry !
I guess the next of your adventure is here : https://diysolarforum.com/threads/today-i-received-my-new-250a-daly-bms-and-active-balancer.6760/

Manu said:

oops sorry !
I guess the next of your adventure is here : https://diysolarforum.com/threads/today-i-received-my-new-250a-daly-bms-and-active-balancer.6760/

Click to expand...

Correct.

If your max is "only" 72A this active balancer BMS really can be a good fit for you.

I stressed it to its limits, and apparently they where in my situation not yet strong enough.

I have been in constant contact with IC GOGOGO store and the builders of the active balancer BMS.
As I was one of the first who received it, there where some small issues to be expected.
The defective unit is back at the factory for R&D

To my knowledge the newer units have no longer my issues.
One other member is using the active balancer BMS without any issues.
(Except maybe the Bluetooth range)

I'm not sure if they fixed this in the newer versions, but you can ask them.

That I buy their active balancer after my "bad" experience with their product shows the faith I have in their products!!

For me with now 27, next month 35 X 330w panels... That's not directly standard installation.

The 100A was already small size for me.
Now I have a unit that is capable of handling my extreme production.

I can recommend this product, as long as you have less then 100A production.

(Some MPPT can limit the production, you can set to max 45A.
Even that max setting is flexible where it will be sometimes 48 or 50A...)

In my situation I gave it to close to its max of 100A.
This max is now higher, despite the same marketing max of 100A.

I can't test it for you but the people I talked to where really professional and I'm positive that it now really can handle the 100A

Thanks for your feedback !

What was your version in this chart ?

B1A24S-15P

And it worked the 3 days really good.
It might have had issues as being one of the first to be released, I don't know.
Hard to say afterwards.

Their balancers have been around for quite some time and receive almost only positive feedback.

(Like the Daly, who have sadly in the higher regions no monitoring.
Lower nowadays can have)

Living off grid doesn't give you much room to play.
If it doesn't work... There is no electricity.

If I would have lived on grid I probably just would have waited for new of the same.

I wasn't unhappy about it, like said, hard to say now what was the problem.
Maybe their R&D department will inform me, but I don't count on it.

It's always a risk to be one of the first.....

So for BMS I now choose to be many in a long, long line, and overcome it's monitoring limitations by using the active balancer

thanks again, according to these specifications the version B1A24S-15P should be enough for 100A charge.
You were really unlucky !

I like your solution of using a simple and reliable BMS like the daly as battery protection and monitoring / balancing with a more complexe unit : a good split of responsibilities.

fhorst said:

I talked to the guys from Chargery,
(their e-commerce lines are called on AliExpress "IC GOGOGO Store" on Alibaba E&J Technology Group)
and they have new type BMS!!

It is available for shipment!!
It ain't the cheapest option, price start at $95

Mine, the 24S 1A 300A, is $119.28

I'll update you when I have received and tested.

Click to expand...

Wow, This is the BMS with an Active Balance Battery Protection Board. I had compared it earlier to the the Chargery BMS8T or 16T, and for awhile mistakenly thought the Chargery BMS8T also had active balancing tech, but since learned the Chargery does passive balancing. As I remember, you went through a challenging learning curve on set up; and thought your post on that would be highly valuable to anyone obtaining one of these. I wonder if their manual has improved since then. I sometimes kind of wish I had chose this BMS over my Chargery BMS8T purchase (still to be set up) for the active balance capabilities( while also thinking I likely don't need that on LiFePO4s). Looks like a newer tech winner option from my sort of newbie, been studying perspective. Thanks for sharing your expereinces and pictures. ;+)

fhorst said:

Lol

Manual restart ain't positive..???

Click to expand...

What ? Are you saying when this BMS disconnects your battery to protect it: you have to manually restart it ? That sounds like a major handicap, plus design flaw to me. Maybe a firmware upgrade flash could fix that ; ... but I do not have full picture of what you are writing about, and just bouncing off your post here. Maybe you could tell us more specifics.