Something Strange with Growatt SPF 5000 ES

Hello Guys!
I have a Growatt SPF 5000 ES with 5 PVs 535w and 4 AGM VRLA Batteries connected en series.
This Growatt never gives any notification or warning and everything running well.
but watching it by self and by application from mobile (shine phone), discovered something strange if anyone has the same I don't know if it is an issue or not.
Battery SOC runs all night 100% until 5.30 AM then SOC Drops to 25%, all night with Maximum consumption like 2.0 Amp or less, so I ran to the inverter, disconnected the PVs, 5 Seconds Inverter beep and Batteries go to 75%. This Happens on all days when Sun goes down too at the same time at 7:00 PM, SOC here drops to 75%, Tried again to disconnect PVs it goes again this time to 100%. are this is an option in the inverter software? why this Growatt Model doesn't show correct percentages like 100%, 93%, 88%, or 69% .... but it uses between 100%, 75%, and 25%?
by the way, I have 2 batteries Mesure 12.~ and 2 batteries Mesure 11.~, I found something in a store that can balance these batteries name Battery Equalizer or Battery Balancer, so pro what do u think about what is happening here?

It sounds like you have a faulty unit or battery.
I don't know of any settings that would cause that.

timselectric said:

It sounds like you have a faulty unit or battery.
I don't know of any settings that would cause that.

Click to expand...

Do you mean Fault in the Growatt unit?

Possibly

timselectric said:

Possibly

Click to expand...

Do you know how can I update the firmware of Growatt SPF-5000-ES?

I don't.
I haven't needed any updates, yet.

Dalank said:

Hello Guys!
I have a Growatt SPF 5000 ES with 5 PVs 535w and 4 AGM VRLA Batteries connected en series.
This Growatt never gives any notification or warning and everything running well.
but watching it by self and by application from mobile (shine phone), discovered something strange if anyone has the same I don't know if it is an issue or not.
Battery SOC runs all night 100% until 5.30 AM then SOC Drops to 25%, all night with Maximum consumption like 2.0 Amp or less, so I ran to the inverter, disconnected the PVs, 5 Seconds Inverter beep and Batteries go to 75%. This Happens on all days when Sun goes down too at the same time at 7:00 PM, SOC here drops to 75%, Tried again to disconnect PVs it goes again this time to 100%. are this is an option in the inverter software? why this Growatt Model doesn't show correct percentages like 100%, 93%, 88%, or 69% .... but it uses between 100%, 75%, and 25%?
by the way, I have 2 batteries Mesure 12.~ and 2 batteries Mesure 11.~, I found something in a store that can balance these batteries name Battery Equalizer or Battery Balancer, so pro what do u think about what is happening here?

Click to expand...

Do you have a shunt installed?

Bit of a dick move repeat-posting:


Did you ever deal with the issue you identified? (answer: no)

If Growatt % charge is voltage based, it's worthless.

If you have 2 of the 12V 4S batteries reading 11.~V, you're hammering the shit out of your batteries, and you need to stop.

Nice follow up here too:


Break down your bank and INDIVIDUALLY CHARGE THE 4 12V AS 12V TO 14.4V. WHEN THE CURRENT DROPS TO 2A @ 14.4v, THEY SHOULD BE FULLY CHARGED.

Once you've fully charged all 4 batteries as 12V, parallel them, and charge again as 12V to 14.4V @ 2A.

Once complete, series them and try again.

Growatt SPF 5000 ES with screw removed and EG4 48v lithium battery no grid feed back.
Consumption only. AC input model UPS.
It may sound stupid but I had a similar problem and the Growatt config is a little vague on this.
I just set the charge from grid max to 1 amp. The Growatt is going to consume some of that anyways.
I charge PV and loads priority in the config. When you do that The grid wants to charge the battery depending on your settings.
hence the 1 amp limit imposed. However the grid can still feed your loads on low PV to battery SOC
Works for me. I set SOC minimum to 70% and start sucking from battery again at 90%. So
I have enough for an unexpected loss of the grid during a good tele program. For your AGM batteries make
sure Growatt is not discharging the batteries before full charge by voltage not percent. Its a sure
config problem for sure. If the AGM batteries dropped to too low a voltage they may already be damaged.
Take them off the inverter and recondition them.
Good luck.

I just set the charge from grid max to 1 amp. The Growatt is going to consume some of that anyways.

Click to expand...

That limit is current to the battery, not current from the grid.

For your AGM batteries make
sure Growatt is not discharging the batteries before full charge by voltage not percent. Its a sure
config problem for sure.

Click to expand...

I didn't read the other threads Sunshine pointed out, but i already know this:

It's impossible for 2 batteries to be in the 12s, and 2 batteries to be in the 11s, if they were all in a series string of 4, without there being a problem within that string (ie not at the inverter). It's also impossible for the inverter to put them there regardless of settings/software. The only way the inverter's behaviour (i.e. charge and discharge) could create that symptom would be if you had 2 smaller batteries in series with 2 larger ones, and it STILL wouldn't be the inverter's fault.

EDIT: Ok i clicked the thread. Add 'mixing old and new versions of otherwise identical batteries in a series string' to my list there.. ?

At that age difference it SHOULD be workable but in this situation you still have to do the due diligence of individually charging all 4 to the same SOC before reconnecting in series. If the problem reappears it is likely to be related to faulty batteries at which point you'll have to start diagnosing either by temperature variation, individually load testing, or individually capacity testing the batteries while not in series.

Dalank said:

Hello Guys!
I have a Growatt SPF 5000 ES with 5 PVs 535w and 4 AGM VRLA Batteries connected en series.
This Growatt never gives any notification or warning and everything running well.
but watching it by self and by application from mobile (shine phone), discovered something strange if anyone has the same I don't know if it is an issue or not.
Battery SOC runs all night 100% until 5.30 AM then SOC Drops to 25%, all night with Maximum consumption like 2.0 Amp or less, so I ran to the inverter, disconnected the PVs, 5 Seconds Inverter beep and Batteries go to 75%. This Happens on all days when Sun goes down too at the same time at 7:00 PM, SOC here drops to 75%, Tried again to disconnect PVs it goes again this time to 100%. are this is an option in the inverter software? why this Growatt Model doesn't show correct percentages like 100%, 93%, 88%, or 69% .... but it uses between 100%, 75%, and 25%?
by the way, I have 2 batteries Mesure 12.~ and 2 batteries Mesure 11.~, I found something in a store that can balance these batteries name Battery Equalizer or Battery Balancer, so pro what do u think about what is happening here?

Click to expand...

It is Growatt firmware bug when u have solar.
The issue is irrelevant to the battery, but Growatt is showing wrong SoC as it is showing wrong charge in kwh for the battery. the total charge for the battery you see on shinetool is wrong