I recently purchased 3 Pylontech US3000C batteries with a build date of Oct 21, 2021.
My Goodwe GW5048-ES has firmware 4161611, which always worked great with lead acid batteries.
When installing the Pylontech US3000C batteries with the PV Master, everything worked perfectly right out of the box. They were 50% charged. They synchronized well and I have had neither alarm nor failure.
The problem arises when trying to configure the DOD OFF GRID to 95% which is compatible with the manufacturer of this "C" Series from Pylontech.
PV Master prevents me from doing so and allows me to enter a maximum value of 90%.
Can any Goodwe 5048 user with these batteries tell me what is the latest firmware number that works with 95% DOD setting for Pylontech US3000C?

 

4 hours ago, Cef said:

I recently purchased 3 Pylontech US3000C batteries with a build date of Oct 21, 2021.
My Goodwe GW5048-ES has firmware 4161611, which always worked great with lead acid batteries.
When installing the Pylontech US3000C batteries with the PV Master, everything worked perfectly right out of the box. They were 50% charged. They synchronized well and I have had neither alarm nor failure.
The problem arises when trying to configure the DOD OFF GRID to 95% which is compatible with the manufacturer of this "C" Series from Pylontech.
PV Master prevents me from doing so and allows me to enter a maximum value of 90%.
Can any Goodwe 5048 user with these batteries tell me what is the latest firmware number that works with 95% DOD setting for Pylontech US3000C?

 

Morning Clf

I have the same setup but only with one US3000C Battery. I can confirm that the max DOD is only adjustable to 90%. My unit has been update with the latest firmware. My firmware Version is 2121E.  I would check with Goodwe if they can push the newer firmware to your unit if so required. secondly in my opinion I would not want my battery to drop below DOD 90-80%. my reason is it will prolong the life of the battery. more importantly is to ensure long battery life it would be best to ensure that the battery only does one cycle a day and not up and day during the day due to not having sufficient PV available on sunny days to drive the required load. 

STOP//// Before you upgrade firmware can you confirm what version of firmware you have???  The reason I ask is I think I have a bigger issue with my installation. what I have noticed is my battery no longer goes into stand by mode when it reaches 100% charge when there is sufficient PV available (Continuously Cycles the battery up and down between 99% and 100%) once its reaches 100% it then discharges at around 15 watts till 99% is achieved then charges up again. this I feel is damaging the battery. My installer has opened a ticket with Goodwe but we still have no feedback or solution to the problem.  Can you confirm if your unit does this? (I have attached some screen shots understand that all screen shots where that at mid-day when the sun has been blazing. (More then sufficient PV Available) My concern is that the battery never goes in to standby mode when not required. lastly May I mention that this is my second ES inverter as I upgraded from my 2016 model to a new serial number 9------ onwards. 

The issue mentioned I never had with my old inverter Serial number 3------- onwards with the same battery may I add. so for this reason this cant be a battery issue.

Let me know what your inverter is doing in this regard.

 

 

 

 

 

 

@Ronald W

I am on 2121A with 2x US3000b and 2x US3000c and also a 5048ES.

That charging/discharging is probably the batteries (the BMS) telling the inverter to do that. If it only discharges at 15w I would say it is the batteries instructing the inverter to do so.

If your batteries and inverter is communicating normally, that will be the case. As a test, you can disconnect the cable between the master and the inverter and see if it stops. However, it is important to put the cable back in, the inverter will mess up the batteries if it is disconnected too long. Mine was unplugged by mistake and the inverter discharged the batteries to the point the BMS turned them off.

Personally I wouldn't worry about it, but if you think it is an issue, you better off finding out from Pylontech why the BMS is telling the inverter to constantly do it. I suspect it has something to do with trying to balance the cells individually inside.

 

My question is then why did the same battery with my old inverter Green ES not do it? (See attached photo)

Cant see it being the battery when the only thing I changes was the inverter to the new white one.

With my old inverter the 6 light uses to switch off when the battery was full and go in to standby mode. even the App used to indicate that the battery is in Standby mode.

With the new inverter it only goes into standby mode when the battery hits the set DOD. when fully charged is cycles up and down.

 

 

 

Edited January 12, 20223 yr by Ronald W

5 minutes ago, Ronald W said:

 

My question is then why did the same battery with my old inverter Green ES not do it? (See attached photo)

Cant see it being the battery when the only thing I changes was the inverter to the new white one.

With my old inverter the 6 light uses to switch off when the battery was full and go in to standby mode. even the App used to indicate that the battery is in Standby mode.

With the new inverter it only goes into standby mode when the battery hits the set DOD. when fully charged is cycles up and down.

 

 

My guess is that the BMS is doing that because the cells aren't yet fully balanced.

1 hour ago, Tinuva said:

I am on 2121A with 2x US3000b and 2x US3000c and also a 5048ES

I was thinking that it may be due to the firmware upgrade I had done. as I'm running 2121E that is newer than 2121A.

It has only being doing it since the new firmware upgrade, this is the reason I have been thinking its a inverter issue and not battery.

I do understand that the battery has to do a balancing cycle but surly this should not take days. also I have only had this issue with the new inverter.

 

I have firmware 2121D and a different brand of battery. I can't set the DOD lower than 90%. So I suspect this is a hard limit in the app or in the inverter.
 

Just now, Bobster said:

I have firmware 2121D and a different brand of battery. I can't set the DOD lower than 90%. So I suspect this is a hard limit in the app or in the inverter.
 

I would agree with your theory. But may be the BMS set limit too

59 minutes ago, Ronald W said:

I would agree with your theory. But may be the BMS set limit too

Possible. But I have a different kind of battery and a different kind of BMS. And the manufacturer of the batteries is advertising that they can be discharged all the way with no harm. I'm not saying the latter claim is true, but why would they then put a hard limit into their BMS?

2 hours ago, Bobster said:

I have firmware 2121D and a different brand of battery. I can't set the DOD lower than 90%. So I suspect this is a hard limit in the app or in the inverter.
 

Yes, apparently this is by design and one cannot set the SOC to be 100% either, it only allows a max constant state of charge of 90% as well (on grid). So it will charge the battery to 100% using solar, but as soon as sun sets it discharges battery to 90%..

Both these limits are, in my opinion, designed to enhance the longevity of your battery...A LiPo4 battery should never be kept at 100% all the time.

My batteries reach 100% then they "trickle" charge/discharge (20-30Watts) for a while, balancing, then at 100% go into standby. Once the sun sets they then deplete to 90% and stay there till the sun comes up again (unless I set it to drop to X% overnight). A very good battery management strategy.

 

Edited January 12, 20223 yr by FixAMess

 

Hi Guys

Ok Goodwe has replied see attached. I'm not to sure on how true it is as the App aside. the battery indication on the battery itself always reflects that the unit is charge or discharging even when there is sufficient PV to drive the load

anyone have constructive input to clear the air. or am I looking for a problem that is not a problem. if I look at the PV App then the only time the battery goes into Standby mode is when the battery reaches the set DOD. from what I understand Goodwe is saying that there App is not accurate. 😞 Not a good reflection on the product if they don't get it sorted.

Thanks

 

Thanks Guys

 

It's long seemed to me that both the app and the portal infer some figures rather than use data from the system.

Hi @Ronald W

To your query I will tell you that I have exactly the same situation as the one you mention.
Once the SOC = 100% has been reached, either with photovoltaic energy or with grid energy, the batteries are in Stand By for just a few minutes. Then it starts delivering 10 to 12 watts to the inverter continuously. As I have a Victron BMV-700 Battery Monitor connected before the Inverter with greater precision than the data collected from the BMS, I clearly observe that the SOC decreases by 99.9%, 99.8%, 99.7… instantly when it reaches 99 %, the Inverter starts charging the Pylontechs with between 450 and 350 Watts / Hour until the SOC value returns to 100%.
On the other hand, I see no reason to mistrust the manufacturer's information in the sense of a download, if it is exceptional, that reaches 95% DOD of the Pylontech "C" Series. Grid power outages are rare in my area so a hypothetical 95% DOD is highly unlikely. But if need be, I know I have some extra amp-hours / watt-hours of  Capacity/Energy.
I have connected my new batteries to the inverter for about 4 days and although I do not have the console cable to confirm the Firmware of the Pylontechs, I imagine that since they have a Production date of October 2021 they must have the latest or one of the latest firmware, for What in a few days I will comment if indeed those 10 to 15 watts are due to the balances of the cells that it indicates @P1000

As Additional Information I comment that I did not change the state of the DIP Switches. Leaving them all at "0"  or "Off" as they are, just like I took the Pylons out of their boxes.

The version reported by my Goodwe on the SEMS Portal is: 4161611
And from what I see from the contributions made so far, it is not necessary to update the firmware of my inverter.
Has anyone noticed any positive difference in firmware updates from 2121 onwards?

Edited January 12, 20223 yr by Cef

15 hours ago, Cef said:

Hi @Ronald W

To your query I will tell you that I have exactly the same situation as the one you mention.
Once the SOC = 100% has been reached, either with photovoltaic energy or with grid energy, the batteries are in Stand By for just a few minutes. Then it starts delivering 10 to 12 watts to the inverter continuously. As I have a Victron BMV-700 Battery Monitor connected before the Inverter with greater precision than the data collected from the BMS, I clearly observe that the SOC decreases by 99.9%, 99.8%, 99.7… instantly when it reaches 99 %, the Inverter starts charging the Pylontechs with between 450 and 350 Watts / Hour until the SOC value returns to 100%.
On the other hand, I see no reason to mistrust the manufacturer's information in the sense of a download, if it is exceptional, that reaches 95% DOD of the Pylontech "C" Series. Grid power outages are rare in my area so a hypothetical 95% DOD is highly unlikely. But if need be, I know I have some extra amp-hours / watt-hours of  Capacity/Energy.
I have connected my new batteries to the inverter for about 4 days and although I do not have the console cable to confirm the Firmware of the Pylontechs, I imagine that since they have a Production date of October 2021 they must have the latest or one of the latest firmware, for What in a few days I will comment if indeed those 10 to 15 watts are due to the balances of the cells that it indicates @P1000

As Additional Information I comment that I did not change the state of the DIP Switches. Leaving them all at "0"  or "Off" as they are, just like I took the Pylons out of their boxes.

The version reported by my Goodwe on the SEMS Portal is: 4161611
And from what I see from the contributions made so far, it is not necessary to update the firmware of my inverter.
Has anyone noticed any positive difference in firmware updates from 2121 onwards?

You are on 1616 firmware. Not sure what the 4 is, but 1616 is the inverter firmware and the 11 is the ARM firmware (the lan/wifi communication module inside the inverter).
PVMaster will give you a different look at the firmware version. It will show 1616 and a letter at the end.

1616 is very old. When I was on that, certain grid instabilities caused my inverter to fail, eg. it would stop working and backup circuits would die.

There were 2 options at the time.

a. Use manual country select and manually configure the settings instead of South Africa.
b. Upgrade firmware. My installed advised that an upgrade is the better option where both South Africa settings are fixed, or more in line for our grid quality and a bunch of other fixes.

I contacted Goodwe on their website, and received a response same day that they can upgrade next day at 5pm.

That said, at least your post confirms it is not the goodwe firmware that @Ronald W needs to look at. As yours are doing the same on 1616 as his on 2121E.
So it must definitely be the pylontech batteries BMS that is doing this.

Ok.
Thanks @Tinuva. I haven't really experienced any of the problems you mention.
I update the information. I generated a claim ticket to Goodwe. They confirmed that for my Region this is the latest Firmware made by Goodwe. With reference to the DOD OFF GRID, they remotely modified it. It was set to 95% OFF GRID.
Apparently, so far, the version of the PV Master Application is the one that does not allow modifying the DOD beyond 90%.

6 hours ago, Tinuva said:

 

That said, at least your post confirms it is not the goodwe firmware that @Ronald W needs to look at. As yours are doing the same on 1616 as his on 2121E.
So it must definitely be the pylontech batteries BMS that is doing this.

 

With reference to this, I am not so sure since the event that Ronald W mentioned started with the Inverter change... 🙄

We'll see what happens to my Pylons when I spend a little more time.

Edited January 13, 20223 yr by Cef