4 MWh SRNE ASF48100U200-H 10kw.

bhavin66 said:

LV5048
4 SunPower 320W panels (2s2p)
4 SunPower 420W panels (2s2p)
4 SunPower 420W panels (4p)
(i was scammed on those 420W panels. only 4 work and output about 350W that i have seen. other 4 shows full voltage but when connected it outputs only 1/3 or 1/2 output)
6 100AH rackmount LifeP04 batteries from Alibaba (5 connected)
For now i am using the opensource (jblanc) V1 code on Github to monitor my LV5048 (there are updated versions of his work after i installed on his github). i designed my own dashboard for grafana after jblanc shared his basic monitoring platform. i was planning on integrating to my Home Assistant but things happened and that was delayed.
Now i have this new SRNE with wifi which i ordered from Aliexpress $1321.97+tax delivered in about 5 days from HK

https://www.aliexpress.us/item/3256804531549701.html?spm=a2g0o.productlist.main.3.2cd5XwgXXwgXpx&algo_pvid=b4745574-48f4-4682-a02f-bc44dc52486f&algo_exp_id=b4745574-48f4-4682-a02f-bc44dc52486f-1&pdp_npi=4%40dis%21USD%211870.90%211290.92%21%21%211870.90%211290.92%21%402103247417112052209548949e9121%2112000030218434136%21sea%21US%210%21AB&curPageLogUid=2qwT3fDBXjBG&utparam-url=scene%3Asearch%7Cquery_from%3A

Looking to add more loads to this off grid setup so that i can compensate for my EV charging from my other Grid tie system.
i was looking to get some settings from people who have it working as a starting point while i read through the manual.

Click to expand...

I got your message and I will respond here for visibility. These are my settings via Solar Assistant. Keep in mind that you would need to multiply by 4 for a 48V system. Some settings need the modification of others in order for the change to take effect. There is a list somewhere but I'm sure it's buried in this million-post inverter appreciation thread.

bhavin66 said:

LV5048
4 SunPower 320W panels (2s2p)
4 SunPower 420W panels (2s2p)
4 SunPower 420W panels (4p)
(i was scammed on those 420W panels. only 4 work and output about 350W that i have seen. other 4 shows full voltage but when connected it outputs only 1/3 or 1/2 output)
6 100AH rackmount LifeP04 batteries from Alibaba (5 connected)
For now i am using the opensource (jblanc) V1 code on Github to monitor my LV5048 (there are updated versions of his work after i installed on his github). i designed my own dashboard for grafana after jblanc shared his basic monitoring platform. i was planning on integrating to my Home Assistant but things happened and that was delayed.
Now i have this new SRNE with wifi which i ordered from Aliexpress $1321.97+tax delivered in about 5 days from HK

https://www.aliexpress.us/item/3256804531549701.html?spm=a2g0o.productlist.main.3.2cd5XwgXXwgXpx&algo_pvid=b4745574-48f4-4682-a02f-bc44dc52486f&algo_exp_id=b4745574-48f4-4682-a02f-bc44dc52486f-1&pdp_npi=4%40dis%21USD%211870.90%211290.92%21%21%211870.90%211290.92%21%402103247417112052209548949e9121%2112000030218434136%21sea%21US%210%21AB&curPageLogUid=2qwT3fDBXjBG&utparam-url=scene%3Asearch%7Cquery_from%3A

Looking to add more loads to this off grid setup so that i can compensate for my EV charging from my other Grid tie system.
i was looking to get some settings from people who have it working as a starting point while i read through the manual.

Click to expand...

What's the VOC of your panels?
4s on the 320W will be close to the minimum start voltage.

My current settings.
01 - SBU
02 - 60.0
03 - UPS
04 - 49.2
05 - 50.8
06 - SNU (grid breaker is off so OSO)
07 - 180
08 - USER
09 - 55.6
10 - 90
11 - 54.8
12 - 45.2
13 - 15
14 - 49.6
15 - 42.4
16 - dIS
17 - 21 irrelevant, 16 disabled.
22 - dIS
23 - 27 - ENA
28 - 5
30 - Id: 4 (changed this when SA was having connection issues)
32 - SLA
33 - WOW
34 - dIS
35 - 50.4
37 - 54
38 - 120
40 - 45 - not used 00:00:00
46 - dIS
47 - 52 - not used 00:00:00
53 - dIS
54 - 55 time and date
57 - 4
63 - dIS
68 - 180


Will hit 3.5mWh today or tomorrow pending sun...

42OhmsPA said:

What's the VOC of your panels?
4s on the 320W will be close to the minimum start voltage.

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320W Voc=65v (LV5048 - 145v max)
420W Voc=85v (on a different charge controller that can handle up to 180v)

bhavin66 said:

320W Voc=65v (LV5048 - 145v max)
420W Voc=85v (on a different charge controller that can handle up to 180v)

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That's higher than I expected.

I'd go with 4s with the 320W on one mppt and 4s2p with the 420W on the other mppt.

i know i will have to adjust the PV series for the new inverter. i am working on adding more panels to cover more loads with this off-grid setup to reduce my grid usage. until that time i will need Grid assist for SRNE 10KW setup and keep sell to grid disabled.

42OhmsPA said:

I'm 99.99% certain it's the same inverter, SRNE is the OEM.

I don't use BMS communications with the inverter, only Solar Assistant. USER ftw.

I assume it gets set to 0 because SOC takes over.

I have the latest firmware from SRNE (haven't flashed it) if you want it.

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How/where did you get the firmware?
I've been trying to get for a while.

jahno said:

How/where did you get the firmware?
I've been trying to get for a while.

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I emailed SRNE support using the address on their website.
The address is in the 5th photo here Post in thread '3 MWh SRNE ASF48100U200-H 10kw.' https://diysolarforum.com/threads/3-mwh-srne-asf48100u200-h-10kw.67809/post-949965

What makes you want to update?

Kind of crazy what I've harvested already has paid for about half the cost of the SRNE.

No restarts today and I've been pushing it.
I think I might actually win in my battle against the batteries getting to float (they will have plenty of time this week when I'm at work).

42OhmsPA said:

No restarts today and I've been pushing it.
I think I might actually win in my battle against the batteries getting to float (they will have plenty of time this week when I'm at work).

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How loud is it when you're making 10kw? Also you should calm down. You're going to put the power company out of business

nickj said:

How loud is it when you're making 10kw?

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I'd say it's a little louder than a standard box fan on high, quieter than a hair dryer on high and a lower pitch.

nickj said:

Also you should calm down. You're going to put the power company out of business

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I can't stop I'm addicted
Lost so much potential energy today.

I really want to order another one so I can torture test this one but I must control spending, walked 30 acres last night...

More batteries, more panels, add hot tub, beer cooler and Mr. Coffee

marionw said:

More batteries, more panels, add hot tub, beer cooler and Mr. Coffee

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We're on the same page.
More batteries, more panels, more inverter, add steam sauna, scotch and bourbon cabinet and espresso machine.

42OhmsPA said:

We're on the same page.
More batteries, more panels, more inverter, add steam sauna, scotch and bourbon cabinet and espresso machine.

Click to expand...

I can handle bourbon, after a couple of scotches

42OhmsPA said:

No restarts today and I've been pushing it.
I think I might actually win in my battle against the batteries getting to float (they will have plenty of time this week when I'm at work).

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View attachment 204342

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Have you ever had your battery bank down close to zero? If I did my calculations right you have about a 40kwh battery? What's the most PV you've put into your battery in a day? I'm guessing with almost 10KW of PV you could pretty much charge it all up in a day?

Sorry if I'm repeating a question that may have been asked in this thread, but would you say your inverter has a decent UI and is somewhat easy to use? I have a 6500EX, and I have a electronics technician background, and it's not that difficult for me to use, so I was curious about this one.

Subdood said:

Have you ever had your battery bank down close to zero?

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The furthest I've let it go is about 20%

Subdood said:

If I did my calculations right you have about a 40kwh battery?

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Yes, just shy of 40kwh. If this next deal I've been working on transpires I'll be adding another ~35kWh for ~$2k. I'm hoping for a road trip over the holiday.

Subdood said:

What's the most PV you've put into your battery in a day? I'm guessing with almost 10KW of PV you could pretty much charge it all up in a day?

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Most days when I'm at work it's full by noon. Yesterday was one of the highest days for recharging, loads and production.

Subdood said:

Sorry if I'm repeating a question that may have been asked in this thread, but would you say your inverter has a decent UI and is somewhat easy to use? I have a 6500EX, and I have a electronics technician background, and it's not that difficult for me to use, so I was curious about this one.

Click to expand...

I came from a TP6048/LVX6048/6000EX.
The UI is very similar, some more options that are useful like low voltage shutdown delay, and the beep isn't nearly as annoying. Setting it up was a breeze.

SA charts aren't super accurate with scaling when you zoom way out on the data.

42OhmsPA said:

The furthest I've let it go is about 20%

Yes, just shy of 40kwh. If this next deal I've been working on transpires I'll be adding another ~35kWh for ~$2k. I'm hoping for a road trip over the holiday.

Most days when I'm at work it's full by noon. Yesterday was one of the highest days for recharging, loads and production.

I came from a TP6048/LVX6048/6000EX.
The UI is very similar, some more options that are useful like low voltage shutdown delay, and the beep isn't nearly as annoying. Setting it up was a breeze.

SA charts aren't super accurate with scaling when you zoom way out on the data.

Click to expand...

So it looks like y'all barely put a dent in your battery. That's some great daily production.

I was checking out the early part of this thread when you were building your adjustable ground mount. I read thru several pages, but didn't see specifics on it. What size of posts did you use for the support posts? 4 x 6 x 8ft? How deep are they buried? Did you use concrete or just fill them? How has it fared since you built it?

I saw a similar mount made by Rodney Hunt on YouTube, I think he used 4 x 6's.

I used 4x4x8ft support posts for my 28ft long ground mount, buried about 2ft deep in quikrete. But my mount isn't adjustable. I did some fancy trigonometry to arrange it to be about 33 degrees, which is supposedly the ideal fixed angle for my location. Also had to build it across a side slope, so that made the build more tricky. Used a lot of mason lines and line levels to get it level.

42OhmsPA said:

If this next deal I've been working on transpires I'll be adding another ~35kWh for ~$2k. I'm hoping for a road trip over the holiday.

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Oh? Did you find a good deal on some more cells? That seems like a good price for 35kwh.

Subdood said:

So it looks like y'all barely put a dent in your battery. That's some great daily production.

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I've been happy now that December / January is over...

Subdood said:

I was checking out the early part of this thread when you were building your adjustable ground mount. I read thru several pages, but didn't see specifics on it. What size of posts did you use for the support posts? 4 x 6 x 8ft? How deep are they buried? Did you use concrete or just fill them? How has it fared since you built it?

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3 of them are made from 3 laminated 2x6s (with the crown alternating). I added 2 more 4x6s halfway through because why not overbuild.
They are all a minimum of 3' deep and each have at least 240lb of concrete.
Some additional info here https://diysolarforum.com/threads/diy-ground-mount-laminated-posts.67728/

It's been through 50+ mph justs and fairly heavy snow with no issues. Some of the winds have moved other things around that were never affected and it's been solid. It is sheltered from the N side by the house and the W by a line of trees.

Subdood said:

I saw a similar mount made by Rodney Hunt on YouTube, I think he used 4 x 6's.

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I saw that video shortly after I finished mine up.

Subdood said:

I used 4x4x8ft support posts for my 28ft long ground mount, buried about 2ft deep in quikrete. But my mount isn't adjustable. I did some fancy trigonometry to arrange it to be about 33 degrees, which is supposedly the ideal fixed angle for my location. Also had to build it across a side slope, so that made the build more tricky. Used a lot of mason lines and line levels to get it level.

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The ability to tilt made a substantial difference in production in December/January. My biggest regret is not accounting for the slope of the ground properly, tilted steep I have to shovel snow from the front of the left side.

Subdood said:

Oh? Did you find a good deal on some more cells? That seems like a good price for 35kwh.

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I came across them on CL about a month ago, seller wanted something ridiculous so I offered a ridiculous low ball he replied weeks later that he would take it. They are supposedly new old stock 230Ah CALB cells that have been sitting in a storage building for 2 years.
I'm just trying to get photos of the cells before I drive to NY, all I've seen are sealed boxes on a pallet.