diy solar

diy solar

EG4 charge amperage has changed.

B

Batavian

New Member
Joined
Apr 29, 2023
Messages
85
Location
California
I have 2 EG4 6500ex-48 setup split phase, 6ea EG4 Lifepower4 48v batteries and roughly 9kw solar panels. My system has been running mostly flawlessly (less a few shutdowns on F80 errors) and charging the batteries with 80 plus amps for each inverter on good days. For the last two days this has changed and the system has automatically set the max charge on one inverter at 30a and the other at 20a. Is this normal, is the BMS doing some sort of maintenance or something? 05 is set up EG4 for 2p1 and User for 2p2.
 
Batavian said:
I have 2 EG4 6500ex-48 setup split phase, 6ea EG4 Lifepower4 48v batteries and roughly 9kw solar panels. My system has been running mostly flawlessly (less a few shutdowns on F80 errors) and charging the batteries with 80 plus amps for each inverter on good days. For the last two days this has changed and the system has automatically set the max charge on one inverter at 30a and the other at 20a. Is this normal, is the BMS doing some sort of maintenance or something? 05 is set up EG4 for 2p1 and User for 2p2.
Click to expand...
What's the SOC of the batteries. Over 95% using EG4 type, the inverter will throttle down current and again over 99%.

30/20 over 95 assuming 6 batteries and 10/0 above 99%
 
Another tip if using EG4 Type. Flip/reset all batteries...starting with your primary and working your way down. This will ensure that the inverter is seeing all 6 batteries and will reset the SOC, just incase one or more batteries are incorrectly reporting the SOC as full.

All of the above is assuming you've done a decent top balance and/or the batteries are new(ish).
 
Zapper77 said:
Another tip if using EG4 Type. Flip/reset all batteries...starting with your primary and working your way down. This will ensure that the inverter is seeing all 6 batteries and will reset the SOC, just incase one or more batteries are incorrectly reporting the SOC as full.

All of the above is assuming you've done a decent top balance and/or the batteries are new(ish).
Click to expand...
Your battery reset worked!! The batteries were around 50% 02 setting went from being stuck at 30a back to 120a.
 
Batavian said:
Your battery reset worked!! The batteries were around 50% 02 setting went from being stuck at 30a back to 120a.
Click to expand...
Assuming your setup is new. Go ahead and change battery type to USE and Set Bulk charge to 56.5 and float at 56. After a few days of full charge...increase both voltages until your batteries can reach 57.5 without any Cell OverVoltage warnings. The EG4 Inverters will push 58v when you use EG4 Type* and it's really hard for the batteries to top balance when they continously shut off charging because a single or multiple cells go over 3.65v.

Edit: when you use a lower bulk and float voltage it is less likely that you will experience the CellOV warning ⚠️ and this will speed up top balancing.

*Referencing EG4 6500EX.
 
Last edited:
This is good for the one aspect of the problem. The F80 fault is still the larger issue.
 
Batavian said:
 F80
Click to expand...
Check that your data cables are tight, someone mentioned that data cables may be influenced by EMI from AC and DC cables. If the F80 continues after updating inverter firmware you may try twisting data cables, adding some shielding. You can also try removing extra rolls from the data cables that may be allowing cross talk. Note the comments about F80 are purely speculation.
 
Zapper77 said:
Check that your data cables are tight, someone mentioned that data cables may be influenced by EMI from AC and DC cables. If the F80 continues after updating inverter firmware you may try twisting data cables, adding some shielding. You can also try removing extra rolls from the data cables that may be allowing cross talk. Note the comments about F80 are purely speculation.
Click to expand...
F80 was a hardware issue with mine. Although I’m sure there could be other causes. His symptoms sound the same as mine though.
 
Gavin Stone said:
F80 was a hardware issue with mine. Although I’m sure there could be other causes. His symptoms sound the same as mine though.
Click to expand...
Reading through a few older post about F80, I see one the mentions F80 referring to battery com failure. If his batteries are reporting SOC as full but the inverters see the voltage as 52v or around 50% SOC that could cause issues.
 
Thank you both for the information. I have had the system running since Jan 1st, the F80 happened on 4/16/23 and then again on 4/26/23. I was able to clear it without too much problem. I will keep an eye on them and try the communication cable twisted pair trick, or separate them to try to reduce interference between them. I have not done any updates to firmware, I was hoping that I would get lucky and this thing would just run out of the box...haha.
 
Batavian said:
Thank you both for the information. I have had the system running since Jan 1st, the F80 happened on 4/16/23 and then again on 4/26/23. I was able to clear it without too much problem. I will keep an eye on them and try the communication cable twisted pair trick, or separate them to try to reduce interference between them. I have not done any updates to firmware, I was hoping that I would get lucky and this thing would just run out of the box...haha.
Click to expand...
Just want to repeat that twisting and shielding may have no impact on F80.
 
Batavian said:
. I have not done any updates to firmware, I was hoping that I would get lucky and this thing would just run out of the box...haha.
Click to expand...
What firmware did your inverters ship with. Cycle through the display until you se U1 and U2
 
You must log in or register to reply here.

Similar threads

J
Breaking in the EG4-3000
Replies
5
Views
426
EG4_Jared
EG4_Jared
D
Parallel 120v single phase setup for EG4 6500EX - Please check
2
Replies
25
Views
1K
Dinobot248
D
B
EG4 Lifepower4 BMS disables battery output after ~10 minutes.
Replies
8
Views
343
SignatureSolarJess
SignatureSolarJess
V
Mobile 48V System Video Question
Replies
2
Views
158
vmb
V
wbihsnp
Grid charging an off grid 2xEG4 LifePower4 48V 100AH batteries (connected to one EG4 6000XP)
Replies
6
Views
393
wbihsnp
wbihsnp
Back
Top