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I just turned my system back on after wiring my two series in parallel. Everything is looking good. This was quite the adventure, but now I've got a much better understanding of how charging these LiFePO4 batteries works. Ah, the joy of learning ? Thanks again @rmaddy for the broad overview...

@OffGridInTheCity I need to remind myself to buy you a beer (or suitable beverage); your assistance has been invaluable so far. I've been building software for 15 years, so I use the StackExchange boards (StackOverflow specifically) more than any other Q&A forums. I can definitely say that my...

I've read and paged through my LV2424 manual so many times that I had to reinforce the covers with packing tape ? Check settings 01 and 16, charger and output priority. Totally agree with @TomC4306 Read that thing cover to cover, then do it again. Then put it right next to your MPPT and...

KISS is the first rule for everything! ;-)

The LV2424 from MPP is a great option, very affordable and has all the bells and whistles. Takes AC input as well, so panels can be added later: https://www.mppsolar.com/v3/lv-mr/

Ha! Very good imagery ;-) That's a very good point. I'm very new to this so I am in no way an expert. I saw Will Prowse use XT60s on a small system he built in one of his videos. My system is rather small, so I thought it was a good idea (plus I had lots of these in my RC gear). And thus far...

I just did some research online and looked into my 70 A Homeline load center a bit further. Apparently the unit doesn't include a ground bar. I missed this in the docs, so that's on me. However, the instructions I received in the package are garbage. I apparently misunderstood the diagrams...

OK, so I'm a bit confused... We're talking testing individual panels versus an array of panels, right? I'm not hooking them up to the LV2424 yet; just wanted to make sure the voltage and current coming off the 2S2P was what I expected before hooking things up. I know that testing my individual...

Ended up shortening the 1/0 AWG leads to better match the distance between my battery bank and LV2424. This gave me opportunity to make the ends nice and clean. Hooked up batteries and AV input and output and everything works! Not sure why I'm surprised but I guess all this anticipation had me...

I adjusted setting 02 to 80 A and it's been running like this for an hour or so. I don't think it changed anything. I'm seeing about 260 W from the panels and the load is about 140 W. The difference is about 120 W / 24 V = 5 A. And this is what WatchPower is showing the battery charge value is...

After the PSU charges these batteries to 14.4 V in CV mode (accumulation), I am assuming they are at 100% SoC (both new batteries were fully charged as of yesterday at 9pm). In order to match to my old batteries, I'm going to top them off with the benchtop charger (same method). What I noticed...

Good thought. Yes, it should be. I will double check, to be absolutely certain. Unless I made an error, all wires should be isolated correctly. And the LV2424 charger is not necessarily off; it could be charging (or not) during the GFCI trip. I'm pretty sure it was charging each time I tried...

What do people recommend for a DC cutoff/breaker? There seems to be plenty of options, with a variety of prices. My solar array is about 100 V, 16 A. @OffGridInTheCity I recall your reply here. I've been considering this setup but might want something simpler to start. What do people recommend...

I've placed orders for the 2424LV-MSD and two (2) ExpertPower 12 V 100 Ah Lithium LiFePO4 batteries. After seeing Will's review, I was hesitant on these batteries. But then after researching the issue and confirming with the manufacturer that they had faulty temperature probes during the bad...

Thank you both... I spec'd the wiring to handle the wattage coming off the panels in the configuration I'm using, so the wire should be sufficient. And I'm pretty careful in general, but I take your points. More than anything, I just needed a sanity check that, in principle, doing the short...

Apologies for any redundancy here. I've read several thoughts on the topic but I'm still unsure how to proceed. I've got 2x 12 V 100 A h LiFePO4 batteries in series making a 24 V system. These batteries are less than 6 months old. I bought 2x of the exact same batteries (same manufacturer...

No, it's the white model, off grid... I've noticed here on the forum that sometimes the settings mentioned don't match the manual I'm working from.

Thanks @OffGridInTheCity. Great advice on the all-in-one inverter. That thing seems very robust. And thanks for the resource to evaluate solar radiation. I've read that a common mistake beginners make is underestimating the requirements, so this it's good to hear you confirm that. My goals are...

I'm looking for some guidance on my LV2424. I've had this small off-grid system running smoothly for about a year. I've got 6x 240 W panels in 3S2P configuration, charging a battery bank of 4x 12 V LiFePO4 batteries, wired in 2S2P for a 24 V system. It's been great so far, after initial testing...

Follow up questions. If I start with, say, 2 x 250/300 W panels, can I still use an all-in-one like the PIP LV2424 MSD 24V 2.4kW, 120V Output, 2kW Solar Input 80A Mppt? To shave some cost on batteries, would it make sense to go with, say, 2 x 12 V 100 A h and then add more in parallel if I need...

Thanks for the reply. Those precautions seem very sensible. No, I did not. They were at the same voltage, so I hooked them up to my all in one and charged them that way. It's an LV2424. I didn't have a charger I was comfortable charging LiFePO4 batteries with (based on other conversations) so...

I've figured out in running my system for a few months that voltage is not a good metric for SOC. At 27 volts your batteries might be full but they might not. Here's an example. My batteries might be around 40 percent or less in the morning (26 point something volts or lower). Low loads over...

This seems very reasonable. And I didn't even realize there were recommendations in the LV2424 manual, based on panels very similar to mine: https://www.dropbox.com/s/xeqwroj3nukfz8s/LV2424_hybrid_manual-20190717.pdf#page=8 Thanks again.

I've been using this for a few months and it's been great: AiLi Battery Monitor Voltmeter... https://www.amazon.com/dp/B07CTKYFTG?ref=ppx_pop_mob_ap_share Very affordable and easy to set up. I also have an LV2424 and it's been a interesting experience getting it configured just right. This...

I want to thank everyone for all the great help so far. It's been super informative. In only a week, I've learned more about solar than I could have imagined. Super cool... I received my LV2424 and have my panels ready. Still waiting on the batteries, but I thought I get started on planning the...

Very cool, things are getting clearer. Thank you both for the prompt replies! I really like the idea of a control box, but my understanding of these is a bit behind the curve. One follow up: I see that you are "combining" the positive and negative leads (2x of each) in the box. I was under the...

Cool, thanks for the detailed response. All what you say makes good sense. I'll do some testing, but it seems my tests revealed the same: bulk charge and float charge should be the same, eg, around 28.5 V or slightly higher for my battery bank (2 x 12 V 100 A h LiFePO4 batteries). The question...

My system starting doing this again rather frequently. All when battery gets to about 25 volts, eg, SOS of about 20% according to my coulomb meter. I changed two settings: number 29 cutoff voltage to 23.5 from 24 and number 12, back to charge from utility, to 24.5 from 25 volts. We'll see...

Perfect answer, thank you. I figured this was the reasoning but wanted to confirm. One other reason I was asking is that I'm about ready to buy solar panel wiring and if I combine with the Ys closer to the panels (which I'm not even sure is a good idea), I would run two leads from the array on...

I was somewhat worried about my LiFePO4 batteries and their SOC when I first started using them, as well. Then I wrote in these forums about it and many users recommended shunt/coloumb counter/monitor as @DerpsyDoodler suggested. I have been running that device for about a month and I've really...