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diy solar

EG4 18kPV Q+A general thread

Zapper77 said:
I set my SOC at 15%. Under 15% the inverter changes to grid. I do not have AC Charging enabled. But I'll test that out later.
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Okay, so just the opposite of what I said. Your load switches over to the grid but you're not charging the batteries at the same time.
 
EastTexCowboy said:
Okay, so just the opposite of what I said. Your load switches over to the grid but you're not charging the batteries at the same time.
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Run it by me one more time. Do you want to power the load by Grid and charge the batteries? (Because it can do that too)

I just wait for the sun to come up to recharge the batteries.
 
Zapper77 said:
Run it by me one more time. Do you want to power the load by Grid and charge the batteries? (Because it can do that too)

I just wait for the sun to come up to recharge the batteries.
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I was mostly just trying to understand which way you have yours set up. Right now with the LV6548s I do power the load and charge the batteries simultaneously when it goes to bypass. I was thinking that was the scenario with this inverter which led to the unwanted feedback to the grid.
 
Gavin Stone said:
That’s good news! I’ve been waiting to hear something on the zero export. My father is wanting to get an 18k pv now also. He plans on using the grid features. Seems like he texts me every other day for an update. He should be happy to hear this.
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He wants an 18kpv, my friend! I love it and ordered a second one. The last firmware- being tested - was the key for me. I haven't had a problem with energy to the grid since!
 
Zapper77 said:
Just received my 2nd set of EG4 LP4 batteries 2 days ago. Working on top balancing now. Still waiting on the rack...(must be back order). The current version of the LP4 Battery has a better mounting brackets and the usb comm cable is nice.
View attachment 157359
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hey please explain top balance or shoot me a reference. I used LL's and just deep cycled them 2x to shutdown since then seem fine. I kill battery at 10% now.
 
rmacgurn said:
hey please explain top balance or shoot me a reference. I used LL's and just deep cycled them 2x to shutdown since then seem fine. I kill battery at 10% now.
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Funny you ask...I'm collecting data points from this new rack of batteries. I'll post some basic numbers once the last pack reaches 57v.
 
rmacgurn said:
yes I am sure that firmware 10.11has solved the self-consumption mode issues, as to generator cannot say as I don't have one,
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Just a heads-up for those who are running their system as per the setup on page 28 of the manual (Partial home backup with backfed breaker), the new unreleased firmware no longer backfeeds the breaker to the main load panel if in zero export mode. I had them update my system to this to try to eliminate the small export (0.1 kwh) on a daily basis but it ended completely stopping any load going to the main panel totally.
I had to have them roll back my version to my previous version (0E:0E) to get it back working as such.
If you are just running your whole panel off the load of the inverter then this doesn't change much for you but for those backfeeding non-critical load breakers in the main panel, this will be a big issue as I have around 35kwh of solar power I then miss out on using. (Unless I rewire my whole panel setup.) (For me, I'll continue to take the chance with my provider with the small amount being shown as exporting back, for now. )

And I don't want to forget, a big thanks to @EG4_Ty for helping me out with this and having to deal with me having him roll it back after. Glad to see some great quality EG4 support available who respond rather promptly. There are lots of negative with SS and EG4 so I want to make sure to recognize them as people tend to complain about the negative stuff and never recognize the positives so it seems off-balance to those reading forums at times. Personally I've had a lot of positive interaction with SS and EG4 over the past 8 months!
 
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don't know how to request updates to the web app or the phone app but if anyone is listening would be great of one of the charts showed the solar production my time of day even incremental. so that we can see for example by 9am 2kw by 11 am was 5kw etc.
also there are several items not shown on the maintenance screen on the web app. as an example the PV air settings.

thanks
 
Quattrohead said:
There are new and improved firmware updates coming very soon, this may fix your problem.
I am running an interim firmware that drastically improved the load voltage regulation and power.
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I have a 2.5 ton unit that has a soft start installed and ran it flawlessly while on grid. This was with an additional 4-5Kw load. I also had grid shaving set up to .5Kw. Once I went off grid and it switches to EPS mode, It wont kick it on. I have turned everything else off and it fails to kick it on. It just powers down and restarts. Will the software issue solve this? I was under the impression that it was able to run 150% for around 5min.
I have 11 EG4LL 5.1KWh batteries in my system.
 
Forgivenpagan said:
I have a 2.5 ton unit that has a soft start installed and ran it flawlessly while on grid. This was with an additional 4-5Kw load. I also had grid shaving set up to .5Kw. Once I went off grid and it switches to EPS mode, It wont kick it on. I have turned everything else off and it fails to kick it on. It just powers down and restarts. Will the software issue solve this? I was under the impression that it was able to run 150% for around 5min.
I have 11 EG4LL 5.1KWh batteries in my system.
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That’s odd. I would say it may have something to do with firmware? Definitely try that route. I have a 2.5 and a 2 ton that mine starts. As well as all my other loads including water well.
 
Gavin Stone said:
That’s odd. I would say it may have something to do with firmware? Definitely try that route. I have a 2.5 and a 2 ton that mine starts. As well as all my other loads including water well.
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I have ver. fA 1. 0
Build Version: fAABj - 1110
Is this the same as yours?

I have another system of 2- EG4 6500 running "Upstream" on separate battery bank and arrays. I used these as Grid power as a test to utilize extra power, but the 18KPV doesn't seem to allow me to use grid shaving when using that as grid. I know this is crazy and breaks all kind of rules but I thought I would try it:). I was hoping to us the AC coupling feature on the Gen lines to perhaps utilize this back up power to go completely off grid. Is this a feasible option perhaps? I really appreciate all y'alls help!!!
 
Forgivenpagan said:
I have a 2.5 ton unit that has a soft start installed and ran it flawlessly while on grid. This was with an additional 4-5Kw load. I also had grid shaving set up to .5Kw. Once I went off grid and it switches to EPS mode, It wont kick it on. I have turned everything else off and it fails to kick it on. It just powers down and restarts. Will the software issue solve this? I was under the impression that it was able to run 150% for around 5min.
I have 11 EG4LL 5.1KWh batteries in my system.
Click to expand...
Mine has been off grid from the start, no updates done yet. I do see some limitations with my compressor all though it's physical size is much bigger than those videos showed for a 5hp motor. The Quincy compressor is kinda industrial in motor winding size for a 5hp but even if I unload the 80 gal tank the motor will grunt for 2 seconds and shut down with out a soft start, which I figure I need before the next try. I do notice I can run much more things at once with no light flicker. Ive never heard the fans kick on once yet but I'm use to conserving power. I like a lot about it all being in 1 box with large wire connections / a pv shut off / and many protections I may never use being off grid and possibly a longer use life sitting there just loafing.
 
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Hi guys a few questions if you have experience.
1. has anyone mixed LL with Lifepro4 batteries? any issues? I am thinking to add one more using lifepro4 to my two LL's
2. I use SOC for batteries but notice that my max voltage is 56.4 - 56.7V and at 10% when they kick off it's 50.9 - 51.1V. those ranges sound ok. I did two full cycles from 100% to 0% using 47V-58V as high and low cut off but never saw them get to those extremes.

thanks
 
rmacgurn said:
2. I use SOC for batteries but notice that my max voltage is 56.4 - 56.7V and at 10% when they kick off it's 50.9 - 51.1V. those ranges sound ok. I did two full cycles from 100% to 0% using 47V-58V as high and low cut off but never saw them get to those extremes.

thanks
Click to expand...
It would take hours maybe even days of top balancing before you would see 58 volts.
 
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