Hubble dropping from 38% to 0%

[Gerrit123]

Hi All,

My Hubble dropped for the second time from 30% to 0%. The first time I let it go, but now the second time I'm getting concerned. Has anyone else have this issue? See my graphs attached. Load shedding started at 6pm, then the discharge started. 

I'm not too happy with this Hubble battery. (I've had the state of charge % showing wrong on the inverter. It's still showing wrong when I directly connect the battery BMS to the inverter, but via their CloudLink box it seems to work, but then the battery temperature is -100°C. )

[Scorp007]

7 minutes ago, Gerrit123 said:

Hi All,

My Hubble dropped for the second time from 30% to 0%. The first time I let it go, but now the second time I'm getting concerned. Has anyone else have this issue? See my graphs attached. Load shedding started at 6pm, then the discharge started. 

I'm not too happy with this Hubble battery. (I've had the state of charge % showing wrong on the inverter. It's still showing wrong when I directly connect the battery BMS to the inverter, but via their CloudLink box it seems to work, but then the battery temperature is -100°C. )

To me it seems like a BMS disconnecting due to 1 cell being at a too low voltage. 

Have you looked at the different cell voltages at the point of disconnect. 

Edited January 19, 2023 by Scorp007

[Gerrit123]

I've just sent Hubble a support request. I'll keep you all updated. 

[zsde]

35 minutes ago, Scorp007 said:

BMS disconnecting due to 1 cell being at a too low voltage

That's one possibility. 
What is the shutdown voltage set to, and which model Hubble do you have?

 

[JanPKotze]

I'm having similar issues with Greenrich battery

[zsde]

38 minutes ago, JanPKotze said:

I'm having similar issues with Greenrich battery

May I suggest you start your own thread . Dropping similar problems with different equipment to the original posters thread will not get the same attention as your own thread with the appropriate title would. 
If you zoomed in on the graphs, then the SOC and V values would be easier to see. But if your cut off voltage is set to 44V, then the shutdown seems to act accordingly.

[Dieter]

As far as I understand Hubble BMS will protect the battery at 46V , which is +/- 40%

[P1000]

7 minutes ago, Dieter said:

As far as I understand Hubble BMS will protect the battery at 46V , which is +/- 40%

How did you come to this understanding?

Here's the relevant info from the spec sheet:

[Dieter]

15 minutes ago, P1000 said:

How did you come to this understanding?

Here's the relevant info from the spec sheet:

Thx for the correction, meant to type 42V

[Dani]

Seems to be a problem with the AM2.

I have the same issue - getting the run around from Hubble.

Now I'm looking to rent a battery so I can send the battery back to hubble for testing.

[Nicholas Strachan]

17 hours ago, Dani said:

Seems to be a problem with the AM2.

I have the same issue - getting the run around from Hubble.

Now I'm looking to rent a battery so I can send the battery back to hubble for testing.

Good luck with hubble.i have just come back from a long horrible experience with them.

I have 2 x am2 and never again

[zsde]

20 hours ago, P1000 said:

Here's the relevant info from the spec sheet:

Which spec sheet is that from?
Hubble has been messing about with changes to their original specs. The original AM2 has gone through 3 iterations with it's firmware updates. Now the original AM2 is not even featured on their website anymore; only the Revision 2 which has different specs again. Some reseller sites still have the original Datasheet.
These are the battery label specs on the original AM2, if indeed the OP does have this one and not the Revision 2.
And even this does not correspond to the BMS reported capacity of 110Ah which was also in their original documentation on their site 

https://cdn.shopify.com/s/files/1/1178/7780/files/Hubble_Lithium_AM-2_5.5kWh_RIOT_Cloudlink_Combo.pdf?v=1623749319

Edited January 21, 2023 by zsde

[Dani]

13 hours ago, Nicholas Strachan said:

Good luck with hubble.i have just come back from a long horrible experience with them.

Please elaborate

[WAP]

I also dropped of one of my batteries at Hubble JHB for what looks like a damaged cell. Support since logging the ticket has been really great. Will see how it goes.

I also had a few instances where the SOC jumped like that. They could not fix anything via my Cloudlink so i took the battery in.

[Nicholas Strachan]

19 hours ago, Dani said:

Please elaborate

Search my last few posts re hubble under the battery section as you will find it there

[P1000]

On 2023/01/21 at 8:21 AM, zsde said:

Which spec sheet is that from?

The first one I could find from google, it was from the hubble website, so I guess it's the latest, but I won't guarantee anything

[maxxis]

Exact same problem. 

One battery will drop from 40% to 0% consistently. 

Unit was taken to Hubble and they did a load test and firmware update. No change. 

This after a lot of back and forth…

Not impressed. 

[PicHopper]

It seems to be a fault that is happening to several of us! 
My inlaws have a SunSynk 5kW inverter and a 5kWh Hubble battery - their system simply shut off as if it were dead, but after 90%! 

The graphs are really quite interesting. Here's the last iteration........ 

First time, the battery went dead after dropping from 100% SOC to 90% then directly to 0% SOC. The battery would not accept a charge from mains via the inverter. The installer "reset" the battery by changing its type to an AGM% setting, then back again a few minutes later, and the battery started to charge from mains again. 

Another day (and more loadshedding later) the same occurred! This time it was around 89% SOC when it shut itself down and reflected 0% SOC. Would not charge. This time, I tried the same "reset" mechanism, and the inverter immediately started to charge again from 0% SOC to 12% SOC then a jump to 100% SOC........................ 

Next day the same thing - this time not loadshedding, but a cable fault in the area meant that the mains was down for considerable time. The SOC dropped steadily and as expected down to 60% SOC, then it shut itself off reflecting 0% SOC. 

The installer is going to come collect the battery and take it to Hubble for testing and repairs. 

Brilliant scenario for the inlaws (80 and 83 years old!) who expected this to solve their electrical issues, and not contribute to them. 

Does anyone have any suggestion on how to speed this testing up? 

[Nexuss]

28 minutes ago, PicHopper said:

Does anyone have any suggestion on how to speed this testing up? 

 Yes! Get some Pylontech batteries and be done with it .

[PsyWulf]

2 hours ago, PicHopper said:

It seems to be a fault that is happening to several of us! 
My inlaws have a SunSynk 5kW inverter and a 5kWh Hubble battery - their system simply shut off as if it were dead, but after 90%! 

The graphs are really quite interesting. Here's the last iteration........ 

First time, the battery went dead after dropping from 100% SOC to 90% then directly to 0% SOC. The battery would not accept a charge from mains via the inverter. The installer "reset" the battery by changing its type to an AGM% setting, then back again a few minutes later, and the battery started to charge from mains again. 

Another day (and more loadshedding later) the same occurred! This time it was around 89% SOC when it shut itself down and reflected 0% SOC. Would not charge. This time, I tried the same "reset" mechanism, and the inverter immediately started to charge again from 0% SOC to 12% SOC then a jump to 100% SOC........................ 

Next day the same thing - this time not loadshedding, but a cable fault in the area meant that the mains was down for considerable time. The SOC dropped steadily and as expected down to 60% SOC, then it shut itself off reflecting 0% SOC. 

The installer is going to come collect the battery and take it to Hubble for testing and repairs. 

Brilliant scenario for the inlaws (80 and 83 years old!) who expected this to solve their electrical issues, and not contribute to them. 

Does anyone have any suggestion on how to speed this testing up? 

Post the Battery Voltage graph for the time

Edited April 4, 2023 by PsyWulf

[PicHopper]

13 hours ago, PsyWulf said:

Post the Battery Voltage graph for the time

Here is the extra bit of info for the same day when the issue occurred (

 

 

[Scorp007]

9 hours ago, PicHopper said:

Here is the extra bit of info for the same day when the issue occurred (

 

 

So this all looks like a mal function of something. At the 35A discharge current it cannot get to zero SOC in the few minutes. Further it cannot be charged back to 100% again in minutes. 

[PsyWulf]

On 2023/04/05 at 9:46 AM, PicHopper said:

Here is the extra bit of info for the same day when the issue occurred (

 

 

Looks like you have a weak cell or another critical fault since the voltage doesn't correlate with the SOC cascade

[Scorp007]

12 hours ago, PsyWulf said:

Looks like you have a weak cell or another critical fault since the voltage doesn't correlate with the SOC cascade

I still feel with the bat voltage and bat current in line with each other the SOC reading was just a false reading for an unknown reason. 

[P1000]

12 hours ago, PsyWulf said:

Looks like you have a weak cell or another critical fault since the voltage doesn't correlate with the SOC cascade

This is probably the answer. I think there is an issue with the balancing in some firmware versions, and this battery probably never got balanced, though that's just speculation. It could also be one of many other issues, like the welds holding the cell terminals to the busbars cracking, essentially becoming a "dry joint".