Resolved (Ecoworthy Replaced all 4 of the batteries)

[Simersam2004]

I have had four of these Ecoworthy 48 volt batteries in parallel attached to my LV6548 for approx. 1.5 years.
Went to my basement to day and found it full of smoke with one of the four spewing a thick stream of smoke, after shutting down the inverter I cut the leads to the smoking battery and dragged it outside.
Now I'm a nervous wreck about the other three should I keep using them? The steel case seemed to do it job containing the fire but I don't know how bad it would have gotten if I hadn't been home to remove it.

Edit. Just after I took the pictures I buried it under a pile of dirt with my brothers track hoe that he had near my house.

Edit #2 Dug it up and added photos of the damaged inside.
There is a pool of melted stuff at the bottom of the case and the one lead is completely free from the the top of the battery cells I'm assuming it was soldered and melted loose.

Edit# 3 Ecoworthy Replaced all 4 of the batteries

 

[jberger]

Dang, that is some scary stuff, it's also exactly why I like metal cased batteries.
How aggressive was your charging profile?
I assume you don't have any way to monitor the cell voltage on those, and that makes it's really hard to get to a root cause.
Glad this ended without major house damage for you.

 

[KnobCountry]

Love to see pics of a post mortem this is scary.

 

[Buff]

I use the exact same battery in my Ryobi electric mower. I've been using it for about the same amount of time. Doesn't get charged and discharged as much as a home system but I will definitely be keeping an eye on it now...

 

[Simersam2004]

Love to see pics of a post mortem this is scary.

The battery currently buried under a pile of dirt and there was only a little damage to the paint of the battery beside it from whatever nasty stuff boiled out of the top.

 

[Simersam2004]

Dang, that is some scary stuff, it's also exactly why I like metal cased batteries.
How aggressive was your charging profile?
I assume you don't have any way to monitor the cell voltage on those, and that makes it's really hard to get to a root cause.
Glad this ended without major house damage for you.

The Lv6548 is set to The max charging current of 80 amps but the max I have seen is around 60 amps to the whole bank.

 

[BarracudaBob]

You must have a fuse or breaker on every battery pack. It may not have prevented this but could save a massive short activating the neighboring batteries. You are very lucky you caught it.

 

[timselectric]

What are the battery manufacturers recommendations for charging?
Did you exceed the recommendations?
If not, I would not trust the rest of them.

 

[42OhmsPA]

Glad you caught it before it was worse.

Was it the 1st battery on the bus after the inverter connection?

 

[Brucey]

Ok so that's the 50Ah vetical model, versus the pizza box style. Scary stuff I have two of the pizza boxes.

 

[Brucey]

The Lv6548 is set to The max charging current of 80 amps but the max I have seen is around 60 amps to the whole bank.

What are your absorb and float voltages? Terminals checked for tightness on occasion?

Also get some smoke detectors.

 

[Brett V]

A good example of why I like my DIY batteries. I know how they're assembled and took every precaution to keep them safe.

 

[SparkyJJO]

Definitely contact the company too

 

[BarracudaBob]

What are your absorb and float voltages? Terminals checked for tightness on occasion?

Also get some smoke detectors.

I added a smoke detector with cell and siren notification via Yosmart/yolink. Have temp sensors in cabinet too. I wanted to set up a automated remote kill switch with their magic finger

Have that flip a breaker or their relay output use a solenoid to pop a breaker or contactor.

I wanted to buy some of their 280ah ones. What happens when one BMS opens up, it would all of a suddenly have -36V across it.

 

[Simersam2004]

Glad you caught it before it was worse.

Was it the 1st battery on the bus after the inverter connection?
View attachment 244173

It was the third one.

 

[Simersam2004]

What are your absorb and float voltages? Terminals checked for tightness on occasion?

Also get some smoke detectors.

Charge was set to 56.4 v
Float was set to 55 v
Back to grid set to 48 v

 

[ericfx1984]

Ecoworthy is hot garbage... I think they actually make some decent metal case batteries... But still

A friend of mine ran a pair of their batteries in series to get 24 volts and then ran a pair of redodos in series as well and then paralleled the two series pairs together

Long story short The eco worthy 3,000 W 24 volt all-in-one popped the main capacitors at the battery input...

This caused all sorts of problems before it was discovered

The weird thing is ecoworthy immediately blamed the redodo batteries, and did absolutely no testing... They sent brand new batteries out to my buddy... But there was nothing wrong with the batteries. They also sent him a new all-in-one... But they didn't seem to understand what broke or what didn't break

They also made it a huge problem where they expected him to pay for the replacements. It actually took over a month to get things replaced

Now even though he has a brand new ecoworthy 3000 W, 24 volt all-in-one he doesn't use it

Redodo on the other hand overnighted everything and had it back to my friend within two or three days. Only saying that they suggested was that the HTRC 12/24 volt lithium charger wasn't the best option

They didn't see a problem with paralleling batteries from different manufacturers

 

[Brett V]

Charge was set to 56.4 v
Float was set to 55 v
Back to grid set to 48 v

I’d charge at 55.2 and float at 54

 

[SparkyJJO]

I’d charge at 55.2 and float at 54

Even so, his settings should not have caused the battery to blow.

 

[Suijkerbuijk]

Hummm
Wy do you think that the battery blow first
It can be that the mosfets from te bms blow and than it thake out the battery it self.
After that the gas come out and smoke the rest .

The battery self are save that normal use the cells only blow by over charge or discharge.
If that do not happens the battery are safe.

Bms that use mosfets can blow .
And sorry if i see the battery protect from Victron that is base on a mosfet and have a out put of 225a.
And than see the bms of a lifepo4 that is smaller and are in a close case .
I do not find it strange that it blow out the mosfets by longtime use.
Now is the charger part or the discharge mosfet that blows up.

Can you open it and see the bms ?

 

[ghostwriter66]

The battery itself may have been put through external parameters that the battery was not designed to be put through ... ie - the crate it was shipped in dropped off the forklift and loosened some of the cell inside .... or it was dropped and the drop exceeded the rated G factor and caused one of the cells to loosen up and finally make contact with a variety of things inside that case while charging -- OR they were changing over solder when making the battery and one of the cells fell short ... OR ... etc etc ....

I would keep my eye on the other 2 but after 1.5 years of use I am going to say that this was a rare anomaly and the others ones will be fine ...

With that said -- I do keep a breaker on each battery in case there is a run-away and I need to shut it off ... and we keep smoke detectors around the equipment .... not that any of that would have helped you ... but it won't hurt ...

also our smoke detectors triggers these DC (bathroom type high VFM) fans that will suck the smoke and fumes outside ... The smoke won't hurt you .. but the fumes will really mess you up according to OSHA ....

Looks like ECO-WORTHY warranty has dropped from 25 years to ONE (1) YEAR ... ""We warranty our product 1 year. After confirming that it is a problem of the product itself and the purchase is less than one year, we will provide free replacement or refund service.""

 

[BarracudaBob]

I’d charge at 55.2 and float at 54

54V for floats. I'll bring it to 56.2 once a month to get things balanced, but normal charge is 55.2V.

Just like my cooking. Nice and slow

 

[Solar Guppy]

From your picture of the wiring, it shows the busbar using the right most connection to the inverter for both positive and negative, if the remaining wires follow the batteries one to one, then the battery connected the closest will be charged and discharged the most ( unequal between the 4 of them ). While the charging maybe only 80 amps, the discharge could be over 120 and unevenly pulled. Not saying this is the issue but it a very common mistake made and we have seen other battery fires due to not have exactly the same wire distance for each battery to the load.

 

[ghostwriter66]

From your picture of the wiring, it shows the busbar using the right most connection to the inverter for both positive and negative, if the remaining wires follow the batteries one to one, then the battery connected the closest will be charged and discharged the most ( unequal between the 4 of them ). While the charging maybe only 80 amps, the discharge could be over 120 and unevenly pulled. Not saying this is the issue but it a very common mistake made and we have seen other battery fires due to not have exactly the same wire distance for each battery to the load.

Nost of these batteries are rated at 2C and we have pulled 3C at times ... the wires would have melted way before the battery if it was from an excessive discharge ... Eco-Worthy is a low-budget manufacturer -- somewhere in the process "something" just crossed the line and gave up the "factory" smoke ...

 

[Brucey]

Nost of these batteries are rated at 2C and we have pulled 3C at times ... the wires would have melted way before the battery if it was from an excessive discharge ... Eco-Worthy is a low-budget manufacturer -- somewhere in the process "something" just crossed the line and gave up the "factory" smoke ...

The metal ones I think you can remove the lid see if anything's loose or an imminent issue.