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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.

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...

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!

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...

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.

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...

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

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...

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...

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...

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.

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...

Thanks again! This should be the final version then.

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...

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?

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.

Hello everyone! I'm a total newbie, and this is what I've come up with after a week of research. It's for off grid sauna cabin. I pretty much only need it for lights, which I plan to run on 12v DC from fuse box (adding some USB outlets for phone / laptop charging). Then I'll have couple of 230v...

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.

Thanks a lot! Really appreciated! This is the new improved diagram. I still put in breaker for OCP, is it really that big of a deal? Otherwise it should be okay now (except grounding maybe). I'm not sure how many amps my DC distribution panel gonna pull at max. It will be 10-15 LED 5-10w LED...

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$!

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?

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?

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...

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...

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...

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...

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.

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...

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

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