I have 2 EG4 6500EX in split phase connected to 12 Lifepower4 batteries. Last week two batteries drained completely overnight, just red light flashing and 71! on my inverter. I pulled them, charged them up completely and reinstalled. Yesterday the same happened again to the same two batteries, all other batteries are at 80%+ charge. I pulled the two batteries from my setup for separate testing, and it ran for about 12 hours with just the 10 known good batteries before giving me the code 71! (again) and shutting the whole system down. All batteries still in the setup have over 80% charge. Where should I start looking for an issue?
71! on EG4 6500EX
- Thread starter jwoh
- Start date
Quattrohead
Emperor Of Solar
Split the 6500EX and run them seperate to see if 1 is causing the problem....yeah sucks to break your 240V but this is what SS will ask you to do.
I just had the same thing. 12 Lifepower4 batteries. Just updated the firmware on each one. Came out to alerts and 3 batteries that had NO lights.
Main inverter shows error 71. No fault light. I can't find anything in the manual about error 71. I put a 48v charger on the bus bar and let it go. I start turning off 'good' batteries to get the bad ones out of alert. It took awhile to get those 3 back to life. Still working on getting them topped off.
What is going on with 71?
Main inverter shows error 71. No fault light. I can't find anything in the manual about error 71. I put a 48v charger on the bus bar and let it go. I start turning off 'good' batteries to get the bad ones out of alert. It took awhile to get those 3 back to life. Still working on getting them topped off.
What is going on with 71?
Same boat here, I completely charged the two that drained out causing the first shut down before reinstalling them, they were at 80%+ at 8pm and by 7am they were blinking red and main inverter showing 71!
71! states "If battery status is not allowed to discharge after the communication between the inverter and battery is successful, it will show code 71 to stop discharging battery"
I have another 'spare' 6500ex inverter I am going to swap out for the main tonight and see if that solves the issue or not.
SignatureSolarJess
Customer Experience Excellence Ambassador
- Joined
- Nov 21, 2022
- Messages
- 890
It sounds like the firmware versions might be inconsistent. I would recommend updating the firmware on all the inverters to the newest version. You can find it here in the downloads tab.
https://eg4electronics.com/categories/legacy products/eg4-6500ex-48-all-in-one-off-grid-inverter
https://eg4electronics.com/categories/legacy products/eg4-6500ex-48-all-in-one-off-grid-inverter
I had the same last night. 6 EG 4 batteries. I’ve been watching the last couple days because the SOC lights have been different on all the batteries. one battery had one light two had 3 lights and the rest had 2 . I thought I would see if the more charged battery leveled out by morning this morning. The system said it was at 51.2 when I went to bed.
I woke up to my inverter not making any power with two batteries showing three green and the rest of the batteries totally dark. I’m worried the inverter thought it had more voltage than it did from the batteries it wasn’t drawing from and deep discharged my 4 batteries badly. But there is no way I used that much energy last night. I probably had a phantom draw of about 40 watts. Make 150 when the fridge kicked on
The inverter firmware is up to date. Any recommendations? To say this system has been unreliable is an understatement. One inverter is sent back for repair, the other one is going to back to repair too as soon as I hear back from my ticket that I opened last week. I’m completely off grid and I told them that I need new inverters ASAP and they said they don’t do that and someone would call in two days. It’s been a week now with no call and now the batteries are doing this and potentially damaging them selves
I woke up to my inverter not making any power with two batteries showing three green and the rest of the batteries totally dark. I’m worried the inverter thought it had more voltage than it did from the batteries it wasn’t drawing from and deep discharged my 4 batteries badly. But there is no way I used that much energy last night. I probably had a phantom draw of about 40 watts. Make 150 when the fridge kicked on
The inverter firmware is up to date. Any recommendations? To say this system has been unreliable is an understatement. One inverter is sent back for repair, the other one is going to back to repair too as soon as I hear back from my ticket that I opened last week. I’m completely off grid and I told them that I need new inverters ASAP and they said they don’t do that and someone would call in two days. It’s been a week now with no call and now the batteries are doing this and potentially damaging them selves
Sounds like an almost identical issue as mine. I am also 100% offgrid and this system has been a constant source of misery for over a year now. At least you are getting somewhere with warranty. After running through all of their test procedures on a previous issue and bugging them for assistance for over almost 8 weeks they told me they were intentionally ignoring me since they did not know how to handle my issue.
On my second inverter I literally plugged a cat cable into the rs45 port to extend the monitor and I fried one half of my PV. I’m limping along until my other one comes back but they haven’t even gotten back to me about this one.
Have you updated the firmware on the batteries? I was told that I didn’t need to but I’m going to try that today
Have you updated the firmware on the batteries? I was told that I didn’t need to but I’m going to try that today
The inverter I had an issue with had a bad MPPT board but I still have it shelved since they never got back to me.
I will be checking/updating firmware on all batteries. I apparently need to buy another different cable than the inverter update cable from signature solar in order to do this though.
I will be checking/updating firmware on all batteries. I apparently need to buy another different cable than the inverter update cable from signature solar in order to do this though.
rfbuehler
New Member
I had similar issue with this cold snap. System shutdown low SOC. 8 of the 10 batteries came back and charged ok. 2 are basically dead. the come up flashing red with an alarm. I broke them out of the battery bank and put them on the 18A charger but they will not charge.
hopefully SS will get back soon. sales gets back quickly once they have your money not so much.
hopefully SS will get back soon. sales gets back quickly once they have your money not so much.
Update: after cycling the battery about three times, it started charging. I’m isolating each battery and bringing them up to full SOC individually.
Reading other threads it sounds like the BMS sucks at actually knowing when the batteries are full and they slowly start giving erroneous readings. The way to solve it is to hold a full high voltage for a few hours to reset it all. This is really unfortunate because being true off grid in the winter I don’t have too many days with sun where I can do that and I don’t want to needlessly run my generator for hours just to reset the BMS
Reading other threads it sounds like the BMS sucks at actually knowing when the batteries are full and they slowly start giving erroneous readings. The way to solve it is to hold a full high voltage for a few hours to reset it all. This is really unfortunate because being true off grid in the winter I don’t have too many days with sun where I can do that and I don’t want to needlessly run my generator for hours just to reset the BMS
zanydroid
Solar Wizard
.
Did you try to charge them one at a time? I had to individually isolate each battery and turn it on about 3 or 4 times to get it to start charging. When I tried with just the generator I couldn’t get it to work. (The battery would start charging, then the generator would rev up but I don’t think it did fast enough so the battery would stop charging. I could only get it to charge with solar and the generator) Do you get any lights at all?
Adam De Lay
Solar Wizard
The buzzing doesn't sound good.
I see that Error 71 (not F71) has to do with the battery not being able to discharge when communication is set up. From what I read, it seems like at least 1 cell has had a low voltage disconnect.
I realize it's winter time, but how often does your system get a full charge?
I see that Error 71 (not F71) has to do with the battery not being able to discharge when communication is set up. From what I read, it seems like at least 1 cell has had a low voltage disconnect.
I realize it's winter time, but how often does your system get a full charge?
Currently we haven't had good, consistent sun since mid December. During the summer my bank will charge in just 3-4 hours of sunlight but I doubt they have seen full charge (100%) in 4-5 weeks. They all hover around 75-90% during the day and drop down close to 60% right before sunrise.
I have pulled the buzzing batteries, all show over 80% SOC and I am charging them individually to 100% to try and reintroduce.
My best guess currently is that the lights on the face of the battery are not reflecting what the SOC actually is.
I am waiting on the USB cable from SS to see what is going on in the software side of these batteries.
I have pulled the buzzing batteries, all show over 80% SOC and I am charging them individually to 100% to try and reintroduce.
My best guess currently is that the lights on the face of the battery are not reflecting what the SOC actually is.
I am waiting on the USB cable from SS to see what is going on in the software side of these batteries.
Adam De Lay
Solar Wizard
Hmm. Yeah, I'm wondering if the lack of a full-charge has allowed the cells to become out of balance.
The SOC lights on the front are just ranges.
Glad you're getting the cable for the battery because that would be my suggestion to see what's actually happening.
Does the 71 code on the inverter actually shut down the inverters?
Similar threads
