Charging issues - Growatt

[Booboo]

I am leaving tomorrow morning for a two week trip with my travel trailer. I am trying to get the betteries charged but the Growatt is only charging at 15a.

I have two 24v batteries made with 202ah LifePo4 cells (overkill BMSs), growatt 24v spf 3000tl and 1000w solar panels.

It was charging at about 15a with the solar only. I wanted to speed things up so I plugged it in. The Growatt is showing it is connected to the grid but the BMS's are still reporting a toatal of about 15a. This should jump up to about 80a. Any ideas?

Growatt settings.

01 - UTL
02 - 80a
11 - 40a
12 - 23v
13 - 24.5v
14 - SNU
19 - 29v
20 - 27.2v
21 - 21v
22 - Sbd

 

[Booboo]

I am leaving tomorrow morning for a two week trip with my travel trailer. I am trying to get the betteries charged but the Growatt is only charging at 15a.

I have two 24v batteries made with 202ah LifePo4 cells (overkill BMSs), growatt 24v spf 3000tl and 1000w solar panels.

It was charging at about 15a with the solar only. I wanted to speed things up so I plugged it in. The Growatt is showing it is connected to the grid but the BMS's are still reporting a toatal of about 15a. This should jump up to about 80a. Any ideas?

Growatt settings.

01 - UTL
02 - 80a
11 - 40a
12 - 23v
13 - 24.5v
14 - SNU
19 - 29v
20 - 27.2v
21 - 21v
22 - Sbd

If I disconnect the solar the the charging stops. So the A/C charger is not working.

 

[JRUD]

I doubt you have 80Amps AC available . Page 9 of manual recommends a 40 amp breaker. That's a big one. House breakers are typically 15-20A . An electric clothes dryer is 30A. The biggest campground plug is 50A. If you are running off a 15A house circuit that's what the unit will use. The 80A number in Setting 02 is the max you want your charging wires to accept for combined solar and AC. it is an upper safety limit.

 

[Booboo]

I called Growatt and they had me disconnect the solar, battery and shore power. Rebooting the inverter. That solved the problem.

The settings are OK.

 

[monoxyde]

You've got the same Growatt as me.

How do you make sure your batteries are charged? I typically keep mine plugged into shore. I've got an 8 bank of raw LiFePo4 280aH cells to make 24v battery.

It seems my battery slowly depletes until it reaches about 24v (the Growatt cutoff), and then it starts to juice back up until it reaches 27v (my floating voltage).

I've got the equipment coming in this week, and I'll be adding 900 watts of solar to the roof once I get my z-brackets.

 

[Booboo]

How do you make sure your batteries are charged? I typically keep mine plugged into shore. I've got an 8 bank of raw LiFePo4 280aH cells to make 24v battery.

It seems my battery slowly depletes until it reaches about 24v (the Growatt cutoff), and then it starts to juice back up until it reaches 27v (my floating voltage).

I have 1000 watts of solar that keeps mine charged.

Mine pretty much stays topped off, it depletes a small amount over night at about 40 watts but tops back off in the morning.

 

[Zwy]

You've got the same Growatt as me.

How do you make sure your batteries are charged? I typically keep mine plugged into shore. I've got an 8 bank of raw LiFePo4 280aH cells to make 24v battery.

It seems my battery slowly depletes until it reaches about 24v (the Growatt cutoff), and then it starts to juice back up until it reaches 27v (my floating voltage).

I've got the equipment coming in this week, and I'll be adding 900 watts of solar to the roof once I get my z-brackets.

What settings are you using in the GW? I set float voltage 0.5V below bulk.

 

[Booboo]

What settings are you using in the GW? I set float voltage 0.5V below bulk.

Here are my settings. I have 1000 watts solar and 2x 202ah 24v LifePo4 batteries. Right now it is set for long term storage.

1 - UTL
2 - 80
3 - APL
4 - SdS
5 - US2
6 - ltd
7 - etd
8 - 120
9 - 60
10 - 2
11 - 45
12 - 23
13 - 25
14 - SNU
15 - bon
16 - lon
17 - Aon
18 - byb
19 - 27.2
20 - 27.2
21 - 22
22 - Sbe
24 - dl5
28 - 1
43 - dl5
44 - 29.2
45 - 60
46 - 120
47 - 30
48 - Eof

 

[Zwy]

Here are my settings. I have 1000 watts solar and 2x 202ah 24v LifePo4 batteries. Right now it is set for long term storage.

1 - UTL
2 - 80
3 - APL
4 - SdS
5 - US2
6 - ltd
7 - etd
8 - 120
9 - 60
10 - 2
11 - 45
12 - 23
13 - 25
14 - SNU
15 - bon
16 - lon
17 - Aon
18 - byb
19 - 27.2
20 - 27.2
21 - 22
22 - Sbe
24 - dl5
28 - 1
43 - dl5
44 - 29.2
45 - 60
46 - 120
47 - 30
48 - Eof

Set float setting 20 0.5V less than bulk setting 19.

I don't know what 28 thru 48 are. I don't recall those. Other than the float/bulk settings, it should charge if plugged in.

 

[Hem@ns]

Hi
I need help
I have a growatt 5000ES which does not charge my lithium battery of 5.1kwh. It is showing error code 19.

This is very annoying

 

[Booboo]

Hi
I need help
I have a growatt 5000ES which does not charge my lithium battery of 5.1kwh. It is showing error code 19.

This is very annoying

I called Growatt for the problem I had. They told me to turn off the inverter, unplug the power to it and disconnect the battery. Basically, rebooting it. It worked for me. If you haven't done that already I would give it a try.

 

[rykelo]

I have a strange scenario for you guys:
I kept my 4000W LiFePo4 battery stored in my basement all winter, using a "smart battery charger" to give it some charge every month or so (the smart charger only seemed to get it to 70%). It seemed to hold the charge pretty well, not losing much charge between top ups. I'm about to head to my trailer, so I wanted to see if I could get the battery to full charge. I hooked up my Growatt and connected to utility power at my house, everything looked good - the Growatt was showing the battery as charging. However, after hours of charging, I disconnected from utility power to see what voltage the Growatt would show for the battery, and it showed 25.5(ish) and after a few seconds jump to 26.4(ish). I plugged back into utility and left it overnight. Then this morning, I woke to find the Growatt powered off and the battery completely dead. I had no loads connected, and the AC switch was in the off position, so it wasn't even attempting to supply AC to the non-existent loads.

Any ideas of what I might be doing wrong? Thanks guys.

Update: I had the Growatt on SbU as setting 1, which apparently doesn't charge the battery unless the Growatt AC switch is off, and maybe after some time the Growatt just shuts down, even if it still needs to be charged. I've changed setting 1 to UTL and switched the AC switch to ON, and now it looks like the Growatt is charging the battery again. But I'm still concerned about why the battery keeps dying.

 

[Kemzy26]

I'm having 2 growatt spf5000es inverters connected in parallel, it was working fine;supplying electricity to the house and at the same time charging my four 12v 200amp batteries connected in series.

My nephew switched the house to generator when the solar was still on, nd a blast took place... Since then the inverters keeps rebooting every 10mins when it's connected to load. Now the battery isn't charging nd showing me error code 19.

Any help on what to do?

 

[YahkiIsreal]

What are your setting on?