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Okay looks like it's battery voltage and there is no way to program load using solar array as variable. I can program specific times, but I already have timer switch doing it. Gonna test it out tomorrow, but hopes are not high.

These are the load setting I found. If I figure out correct ON/OFF volts, I can quicky re-wire my thermostat to SCC instead of fuse box. My 2x panels are 300w with Voc=40, Vmppt=32.83 in series (so Voc=80). Which value do I use to calculate cut off voltages? Panels should bring in more than 40w...

Is this possible? Such a solution never crossed my mind, but that most definitely would be the best way to wire it.

Mount with final paint job and turned in winter angle: Covered up my electric box: Alright, this is the final update for a while. I will answer all the questions if anyone has any. Thanks for all the help!

A beginner question - how do I charge my battery from backup generator? I hook my LiFePO4 charger to B+ and other end of BMS? And do I need to switch off my panels while charging?

Point taken. Gonna upgrade my breakers. Sadly / fortunately I'm skipping winter and heading to Philippines in 10 days, so breakers will have to wait until I'm back (could be 6+ months). Maybe can instruct someone to do it while I'm gone. https://www.aliexpress.com/item/4000662522492 - anyone...

Is there anything I should change in my LiFePO4 battery settings? I'm not sure this is how it's supposed to happen - the moment battery is full (reaching boost charging voltage at 14.4v?), SCC stops charging and voltage drops down to around 13v, just as in this picture. Anything to be...

Yeah not the first time I hear bad things about those breakers. Fuses + isolation switches seems the way to go. Anyone could link some fuse options on amazon/aliexpress/ebay? Price/performance is essential. As I mentioned, my whole system came around 1300$, so I'm not gonna put in 50-100$ fuses...

Is it okay to put cells in direct contact to heating pads? I've seen people putting metal (aluminium?) plate inbetween. And thanks, I will move my heating pads! I placed battery on the bottom for 1) easier access to inverter and other components and 2) a bit shorter wire run as it's 12v...

Thanks a lot! Thanks! Sure, here's the link (crimping isn't that great with it, but wire stripping and cutting is sweet): https://www.aliexpress.com/item/32919605118 For bigger lugs I used this hammer crimp: https://www.aliexpress.com/item/1005001908000233 I haven't fully tested it as cabin...

Electric box is pretty much done! Not 100% sure about grounding (I grounded SCC, common negative and AC panel). Not too impressed with my 20w heating pads, so added 3rd + gonna get a heat sink for them. My 2x300w panels bring in around 480w when sunny, 150w when cloudy / tree shade covering...

Aaaand we are up and running! Launch went smoothly! I have 2x300w panels in series and was pulling in 470w (clear-ish sky), which is good enough. When connected to SCC via wifi app, I came up to this setting - "Low temperature prohibits discharge temperature" which is at 0 °C by default. Is...

Small victory today! Finished wiring everything except grounding and panels, and all the lights and power sockets are working as they are supposed to! I'm quite relieved as I did all the wiring for the cabing myself and burried all the wires deep inside walls. Tried to run 900w angle grinder...

This seems like exactly what I'd need! https://www.aliexpress.com/item/1005002226494368 - roughly 30$ with shipping. I'll order 2 of those and put one in each compartment. Only concern would be it activating from heating pads, but it shouldn't happen.

Gotcha. I'm in Northern-ish Europe, so winter usually is -5 to -10 Celsius, but sometimes goes down to -20.

Fire would suck. I've insulated my box with rock wool and foil in hopes it'll contain the fire if there is any.. It's off grid sauna cabin that will be used just on weekends mostly. Should I consider shutting down the whole system if I know that nobody's gonna be around for several days?

Would the brake lamp be enough for heating? I have a thermostat there (3$), and silicone pads are also just 3$ each, so can't get anything much cheaper than that.. Reliability is what could be improved. I haven't tested my heating system yet, quite curious if it actually gonna work.

Oh please criticize! I'm a noob (I don't even know what mega or ANL fuse is). All the lights / USB charging ports in cabin gonna run with 12v DC and inverter gonna be mostly turned off and turned on if there's a real need for 230v. It's a 1500w intverter btw (3kw surge). I honestly expect it to...

Project still underway, but I figured I share some pics in case there is some fatal error and you guys might save the cabin. Gonna be small system, 12 volt DIY China special LiFePo4 (200ah), 2x300w panels. Worst part is that we get cold winters here and electric "box" is attached to outside...

Hello! I will be putting together a small off-grid system for sauna cabing in following weeks. Sadly I am no expert. I live in Northern Europe, and cabing will be used just on weekends mostly. It has 9 4w-13w LED lights that will run on 12v DC, 2 USB sockets and 3 ac outlets that usually...

You can get in touch with human customer service via Eve bot. I don't remember what to click exaclty, but I was able to get in touch fairly quickly, and customer service was really helpful in my case.

Get in touch with AlieExpress help right away, they will talk directly to seller and force them to 1) Ship original item (EVE cells in your case) or 2) Start a refund process. Don't fall for these scams, never pay any extra than original price. Aliexpress hates and punishes such sellers btw.

If I understood it correctly, my initial question was silly to begin with - my diagram works out just as basic paralell circuit, just that there will be higher current in common part of wiring, therefore I should use thicker wire for those parts. I will be wiring 6-8 LED's (each having...

I found this great circuit building simulation, and there I got the answer to my question - yes, this light diagram will work just as if they are on seperate circuits. Great! https://phet.colorado.edu/sims/html/circuit-construction-kit-dc/latest/circuit-construction-kit-dc_en.html

I've been googling all over, but can't find the answer. Will this wiring diagram work properly? If one light is on, and then I turn on the other one - will the first one glow less bright as a result?

20A breaker, 7 outlets should be fine in a 20amp 230v circuit.

I started to research about wiring my AC power sockets. Is it really that simple that I can just plug my Inverter in any socket, and that's it?

Oh well, you got me. Actually got couple of noob questions about wires. 1. Is there any phisical difference between red/black wire apart from insolation colour (gotta be the dumbest question on this forum, but I wanna be sure). I've been struggling to find Black/Red 2/0 AWG cables for inverter...

Hey! You can tell +/- from the colour of the wire. Red means it's connected to +'s, Black means -. BMS only connect to Battery negative and negative common bus bar, that's why no red wire.

Getting rid of fuses is easy to do hehe Oh btw there's typo in legend in wire size diangram - orange circle is 2/0, and green is 2 AWG obv.

Looks like I can't get away with a single panel. Panels are far-ish from SCC, maybe 130 feet for round trip (gonna measure more precisely when can). Therefore, gotta up the voltage by implementing 2nd panel in order to be able to use 10 AWG cable . Now I'll have 550W panels (combined), quite...

Found a local supplier for solar panel, cheaper for more wattage, and just 1 panel instead of 2. Also increased battery from 160 to 200Ah. You've been a HUGE help HRTKD, would buy you a beer if we ever meet! ;) This is the latest version. Gonna start ordering parts, everything should be up and...

Because of no SMART functions (bluethooth), no low temp sensor (which is fine as I'll have one from SCC).

Alright I think I found a simple solution. QUCC has 250A BMS that's even cheaper than 120A smart BMS. It should cover 1000W dryer. Then I'll have 1500W inverter (3000W surge), and I'm good to go! All in under 1000$!

True, there likely gonna be 10 more versions before final "final" version. I didn't know a thing about solar (or electricity) a week ago, so it's been fun. Panels gonna be connected in series. Specifications are: Rated power: 150 W, VOC: 20.3V, Short Circuit Current (Isc): 9.61A, Working...