As long as the VOC is not exceeded, the controller just clips at 2k watts. Over paneling is very common.
Off Grid, when your battery is full, and you have no load, what does the controller do with all the power being generated by the panels? It just doesn't accept the power from the panels...
You can build a much better battery under $1000 with brand new cells, so repair is definitely not recommended unless it is under warranty. The unit you have is good to about 3kwh on a good day, so maybe 125ah at 26.7v. I have two of those packs and am very happy with them, but even I have moved...
Not as impressive as my 2 BYD setup, but... Oh wait.... :p
I am not going to lie, I have already saved all the pictures to my folder for review. Very impressive!!!!
Only half my house is on battery. I basically live in a duplex (1553 sq ft and 800 sq ft). For some reason the LVX6048 running the 800 sq ft side likes to sip the grid even when there is plenty of solar. The 6000EX is on battery full time (well unless the batteries drain down). That's why I am...
I think your battery may be dead. A lithium battery should not drop to 23.5v if there is no draw on it. It should settle right around 26.7 in most cases. Can you shoot a picture of how it the unit is hooked up? Maybe throw a multi meter on the 24v input lugs and make sure you have good...
You should have a cut off between the battery and the inverter and between the solar panel(s) and the controller. You don't technically need either to get the system up and running, but you want a way to quickly and safely disconnect any source of power. Image your solar panels are doing...
I can't convince myself to buy from aliexpress. I think I would rather buy out of the back of a beat up van from a guy name Vinni... But, yeah that's right at the upper end of DIY pricing right now $150ish per kwh.
"after people stopped trying to fix problems and just tried to outlive them" - Wade Watts
Fictional character in a fictional world, but damn if that isn't an accurate quote...
You CANNOT put them all in series using the Growatt 3k.
If you already have the Longi panels you pictured, I would go 2S4P and call it a day. If you haven't bought them yet and can get 250w Trina (or similar) panels instead, I would go 3S3P.
2S4P Longi Panel = Typical 33.3V/10A x2x4 so...
MPP Solar LV6048 ($1600), x27 250w used panels (should fit 8x3 on your roof) ($3000 with racking/wiring/shutoff/etc.), x3 48v rack mount 5kwh batteries ($5000), 2kw gas generator ($400?).
That will give you 6kwh of power, split phase to run 240v items, the panel array will pump out plenty of...
I would ask for a replacement. Not worth risking damaging the unit and being out $110.
(Actually, who am I kidding. I would run a tap into it and make my own threads, but I own a nice metric tap and die set and am not the brightest bulb in the pack)
Can you locally source the Iron Ridge? The cost you listed is insane for that few panels. I have $2k into my roof mount setup and I am mounting 45 panels with XR100 and L feet, S6 metal roof clamps, grounding, splices, clips, end caps, fasteners, etc.
This is a DC voltage application, no? I don't think NEC 250.58 applies to DC. I wouldn't worry about it myself, but if you really want to ground the system, I would just drive another ground rod. You will not create a ground loop because the systems are completely separate.
Are you feeding back to the grid? First thing that comes to mind is that you are feeding back to the grid with no net metering agreement. If you don't have the correct meter, it will count anything you feed the grid as usage.
40acres? That's a really big school bus! :)
Whatever you decide, I would make it ground based (not fixed to the bus) so you can just unplug and go without having a massive solar array on the roof. 40 acres is a lot of solar panels....
I have the hybrid LV2424 and currently it is not even connected to AC in, but I thought the maximum utility charging would limit what the unit would pull. Thank you for the insight, I will not be hooking it up to an outlet (y)
I think the cell cost is a smoking deal, but the shipping kills it. Less than $100 per kw has been the holy grail for a while now. This would be $175 per kw delivered, and EVE cells are hovering around $150-165 per kw.
My 250w used panels put out 80% on a good day. I would definitely invest in a charge controller, preferably one with a 250vdc input so you can rewire the panels 5S4P. I think you will see much better output at higher voltage.
I would suggest you work closely with your power company. There are a lot of specs, rules, compliances floating around, but ultimately it will be your power company that makes the call, even if your system meets every requirement on earth, if your power company doesn't like it, you are not...
Price, quality, delivery... Pick two... :p
I think the most important variable is how much space you have. If you have unlimited space, I think used 250-300w panels are hard to beat. They are small/light enough to move with one person and inexpensive. If you have limited space, you are...