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So I wanted to share a little about the 12kw ground mount array I've been putting together. I think it's a winner, as far as costs go, but may not be for everyone in every type of situation. Still, I hope this serves as inspiration for those looking to cut costs and do things on their own...

I did. It's been running great since this summer. I found the individual cell voltages to be remarkably balanced without the need for bms balancing. The Dalys are hooked up, by I ask nothing of them other than low voltage and high voltage cut-off. That said, I keep my battery bank between 51...

Just wanted to update that Sol-Ark is doing the right thing. They are replacing the unit that was damaged in shipping with a new outdoor unit. I am unsure whether to define the model they originally sent as a refurbished model. It may be a game of semantics here, but it was an unused model...

All went well. Plastic bag, mason string and shop vac worked great for first leg. For the wire pull I definitely needed a helper pushing wire as I pulled. I built my array using galvanized steel 2in square sign posts (the kind with 7/16 perforated holes every inch). This allowed me to install...

Anything to report?

I was under the impression that the internal bms does not function without an external power source. In Fits, the bms were powered by the starter battery iirc. There’s a bunch of guys at the Honda Insight forum that have done a ton of work in these modules.

You feed 6-4 wire from your Sol-Ark's Grid breaker into a 60 amp breaker in your main panel and run CT sensor wires to your incoming main lines inside the main panel. This will enable the ability to use the limited to home mode which will zero out your meter prioritizing solar>battery>grid...

I haven't had a chance to go through this entire thread, so am not sure if the answer has been figured out, but I had some CT issues that took me some guess and checking to figure out. So.... I've had the 61v Sol-Ark 12k and recently the 63v outdoor rated 12k. My first model did okay with the...

It’s in my email correspondence.

Do you have a link, member name, or keywords that may help me find a thread on that particular build? When you say break and rebuild, if I stay in a 12 cell configuration, I can leave the cells in their casing and I'd only need to cut the bars connecting each cell in series?

I just want to be clear that aside from not charging batteries above 85% I really love the Sol-Ark 12k. I’m using it to zero out my meter and it’s so easy to install and manage all elements of my system. Just wanted to be clear that my issue is how they are advertised and then how issues are...

That is correct. It can do 9k to loads and 3k to batteries.

Hey there, do you still have one of these available? I'm curious as to how it can monitor a 24s pack, since I cannot find a complete 25 pin harness for 24s. My harness that is connected to Daly BMSs is actually split up into two harnesses (one for 17 pins and one for 8 pins I believe), but I...

Looking at the Alibaba page for Yangtze, there are multiple listings for 500w panels, but I'm assuming they are all the YS500M-96 model? It looks like you have different panels than the poster who had glue all over his. Could you speak to the build quality of the aluminum frame? And based on...

The one thing that worries me about the SolArk is that the Daly BMS won't top balance unless it reaches a certain volatage. If I'm reading my spec sheet correctly on my BMS, balance won't occur until the cells reach 2.7 volts which would mean that I'd need an inverter that could reach 64.8v...

The above image is from the Sol-Ark manual. It shows a hot red wire going from a breaker in the transfer switch to the breaker in the main panel. However, when watching Gain Solar’s video on wiring a critical loads panel here... It seems that he does not retain a breaker in the main panel to...

So I’ve been parsing through the internet to find info on this battery technology as there are some used Toshiba SCIB units available on e-bay. There's a lot to like of LTO technology if you can overcome some of the hurdles. The hurdles seem to be price, BMS, space, and odd voltage attributes...

Thanks. I already put in an order thinking that the voltage for the LTO would already be ideal (since it's based on the chemistry) but it looks like the top balance of 2.7 would not work with the SolArk, which I would prefer to use. Plus, I don't want have to charge the batteries to 2.7 just...

In my setup, I'd be running the main panel and a critical loads panel like in the video and not using a multi-circuit transfer switch like in the manual (and your setup). I just wasn't sure if the wiring was the same on a critical loads panel as on a multi-circuit transfer switch since above...

I’m hoping to be able to fish 8 10-gauge wires from PV array to Sol-Ark 12k and parallel at its dual mppt controllers instead of paralleling at array and fishing 4 wires. My reasoning is that there will be less energy loss over the 200+ foot run. Just not sure how easy it would be to fish 8...

Nice! Sounds like we are doing a similar build and should share notes as we go. I might have run into you in the comment section on YouTube. Are you doing a 24s setup? If so are you not worried about your inverter not spanning the voltage of the batteries which would be 36-64.8v. I found the...

All of the railing I've seen is installed on the peaks of the the metal sheeting and I was wondering if there's railings that are secured in the valleys. The metal roofing on my barn is secured in the valleys where the metal touches the wood below the sheets. I could install on the peak, but...

So my system design is a bit unconventional since I'm building it around 40KW of used LTO modules that came from used EVs. Each of the 36 modules will be paralleled into two separate Square D QO load centers, each with a dedicated 2 pole breaker. I'm using two load centers because each will...

So on the spec sheet of the BMSs that I ordered the over charge is 2.85v and over discharge is at 1.7v. Did you specify with Daly the parameters you'd like for these charge and discharge cut-offs so that they'd match the range you're shooting for (say 48v-60v (2.0v-2.5v per cell)), or is it...

Thanks everyone for the tips

I will preface with my goals and intentions. I'm looking to take most of my farm and buildings off-grid with the possibility of being fully off-grid if I can get a micro-hydro system running in the winter. The array will be installed on a large barn roof that faces east and thus will need to...

Was wondering if there's a good video or write up on battery safety out there. I'm about to start working with some used cells and am hoping for some good resources. Thanks.

Nice! Is there a thread with more pics of your builds? Edit: I've looked around and seen some of your posts in other threads but wasn't sure if there was a dedicated thread to your use of LTO batteries. Also, thanks for the info!

Hmmm, so even if the screws don't have anything to bite on underneath, the peaks are sufficient to install on. Or would the screws be long enough to bite to the wood below, but not tighten as to created bend the metal down?

Right on. Yeah, you sold me on the SolArk. For some reason I was under the impression that the inverter needed to cover the entire battery voltage, so thanks for helping me understand it better. I think you saved me a loooooot of headache since the SolArk seems to be as plug and play as it...