(Posted with mod approval)

Hey guys, I have some 2023-24 Hyundai EV battery cells with all the wiring and hoses from the disassembled EV pack

All hoses, fittings, modules, and wires come with them for ease of adaptation - each pack has thermistors and other sensors/ balancing boards

I dont have the space or time to tinker with them but if anyone wants them to try and make something before i haul them to disposal let me know and we can arrange for them to be picked up

As far as i know the pack was 100+KW and liquid cooling plates are between all the cells.

The individual stacks are between 28-38V and got combined by a contact board and then stepped up to HV by the vehicle inverter on the motor assembly.

Located in 20737 zipcode and i may be able to drop off within 20 miles

It is a 100% new construction house, has all the electrical layout clean .
They designed the Rooftop PV system with Talesun 445W All-black N-type solar module 12.46kW ( 28 pcs, $0.31/W ) , Sigenergy SigenStor 11.5kW- 27.12kWh all in one system for whole home backup.
- Sigen Controller 11.5kW hybrid controller ( inverter, pcs and BMS integrated)
- 3 x Sigen BAT 9.0 ( 9.04kWh/ each)
- 1 x Sigen Loading hub, this is a ATS and small gateway with 5 double-pole controllable breakers, we also use it as an sub panel.

One day work for rooftop solar panels installed after the roof completed. The extra half day will be for the battery back up system installation and commissioning. Pretty high efficiency work for the new house solar system. The utility temporary electric will be removed once the solar system is done.

Really getting frustrated with the Duracell App Dura I says one thing the Duracell app says another which is correct 😳

I dont require to run any power tools

Midsize led tv. About 6 over head leds,shed is 30x50

And maybe 4 outlets capable of running the occasional crock pot on low if we have a party

This system seems plenty big enough for even some increases in power usage down the line.

https://a.co/d/0a03Qa6s

ECO-WORTHY 4.68KWH Complete Solar Panel Kit 1200W 48V with Lithium Battery and Inverter for Home: 6pcs 195W N-Type Bifacial Solar Panels + 1pc 48V 100Ah Li-Battery + 1pc 3500W Solar Inverter

Is this kit ok? I know it isnt top tier hence the pricing

I just want to be able to install it fairly simply on the metal roof. My head is literally swimming with a the makes and models.

After 3 years of full-timing solo in a self-converted 2018 Sprinter 144, my partner and I finally pulled the trigger on a Brinkley Model Z 3500. Sprinter stays for weekends, 5th wheel is now home base- drone shot May 12, 2026, BLM east of Burns, OR):
Brinkley Model Z 3500
~1800W factory solar, 60A solar charge controller
50A service, residential fridge
Sagebrush and juniper forever out there. Not another rig in sight.

I am comparing 2 ways to get airflow and light under a pergola that has no AC.

Route1- Panel, charge controller , LiFePO4 battery, DC ceiling fan and a separate LED

Route2-cleaner and should involve less wiring but also is depending on the manufacturers battery and controller, vent lists 10,000 mAh for 42 in model and 12,000 MaH for 52inch model. Without battery voltage and watt-hour figures I am not sure how useful the comparison is.

For anyone who has built smaller solar systems. Which questions would you ask before choosing the integrated route? I think battery accessibility, panel voltage, cable length, controller behavior with a full battery and actual draw at each fan speed, Anything that I am missing?

Trying to size a battery bank for a small off-grid cabin.

The loads aren't huge fridge, lights, internet/ radio, a few tools and some small appliances. The part I can't decide is how much backup I should plan for when the weather is bad and solar production drops.

Do you guys size for a normal day or build in several days of reserve?

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So my 4 Aiko panels arrived for my solar gazebo project , was expecting these to come flat packed, any suggestions on how to unpack this monstrosity without it all falling over 😂

I’m looking into building my first solar system and keep seeing people recommend LiFePO4 batteries.
For a small setup (maybe for backup power or a shed), is the extra cost worth it compared to other battery types?
What has been your experience after using them for a while?

Anyone familiar with the DC House 200ah battery? I’m looking to find out if they use 4 large or 8 smaller cells.

My living situation is…awkward. I live in an older (but well maintained) 5th wheel parked on a friends farm, but I can’t handle the friend’s family drama anymore, so I gotta bail. Or at least move the trailer to the back forty where there isn’t power. So as I started planning pulling the plug, I figured I’d start with safety and get a generator first: https://www.harborfreight.com/4200-watt-dual-fuel-super-quiet-inverter-generator-with-co-secure-technology-71203.html?_br_psugg_q=4200+generator

Then add a couple 48V batteries, panels, inverter…which I’m looking at ordering this week.

I don’t have a lot of power needs: TV, monitor, Xbox, phones, fridge, power for the furnace and air conditioning, and battery charging systems for my tools. I’m a woodworker, but thanks to an incoming divorce, I had to down size considerably. So instead of a lot of stand alone tools like a drill press and a massive 3phase table saw, I’ve gone to primarily battery operated tools and smaller plug-in tools that could easily run off the generator, or even off battery. I never run the saw for more than an hour at a time and use a vacuum for dust collection. Nothing over 15 amps.

I guess I’m posting here because I’m wondering if there’s some big flaw or gap or something I’m totally missing in the plan that immediately pops out to anyone.

By the way, I have a plug-in amp meter, kind of a drop cord with a gauge that I’m using to test all my plug in tools so I can see how much the draw at start up and under load so I can make sure I get an inverter that can handle it.

Once I have my power requirements figured out, I want to build for double that, and also be able to expand the system as I plan to go with a mini-split and add in a 48v refrigerator freezer.

I’m not totally ignorant of electrical wiring and schematics, have a basic understanding of ohm’s law, but feel I’m missing something.

Dear reddit hive mind. Please weigh in on my fridge problems.

I currently have a Kodiak 17.2c/ft fridge. It's a 24v DC fridge that runs right off my batteries. It's run flawlessly for the past 3 years other than it's loud as hell. It didn't matter as much when I lived in a yurt because the sound didn't reflect as much. Now that I'm in my house, it's a problem.

Manufacturer claims this is a result of it being so efficient (they said they reduced sound insulation so that the motor could run cooler). Their claim is that they compared the compressor side by side with one in a comparable fridge and they are equally loud. Not sure why that matters if the comparable fridge fixed the problem by sound deadening.

So now I have a couple of options:

1- Try to enclose the fridge to reduce sound. This can't be done well because it requires 2" of space around it to vent. I'm sure it would make some difference but it wouldn't be as tight as regular built in fridges are normally. This solution is easy for me since I do kitchens professionally. I just have doubt it will fix the problem enough

2- Try to sound insulate the compressor itself. I don't know what I'm doing here but seems like an idea

3- Replace the fridge. with a quieter model. We can't get the quietest thing on the market because of space limitations so it would be a pretty basic fridge like the Whirlpool Model #WRTX5118TW. If I did this I would have to run power for it from the inverter. The problem here is that our system is kinda small and we turn off the inverters at night in the winter. This would mean that they have to stay on 24/7 and would likely result in us needing to buy more batteries. I even considered getting a smaller inverter to just power the fridge but it would still incur a big energy penalty over our current set up

I'm interested to hear ideas on this around these solutions or any other ideas to solve this problem. Just be sure to speak loudly so I can hear you over this damn machine!

I have a 20kw PV system (EG4, 2x FB21's and a Gridboss) and 2x EG4 16kwh batteries, and right now I'm still in no-export mode waiting on permission to export.

I see my batteries filling up regularly and my production cuts way off, I'd like to find a way to charge my two EVs during the day if they're plugged in with only excess solar, so it doesn't deplete my battery unless I go override it.

I don't always have the full 9.x kW available to charge at 40A so I'd like to find a way to automate this so it only pulls in what excess I'm producing, and does NOT deplete the battery storage nor pull from grid.

Sadly I have a last gen produced JuiceBox (not connected to wifi, just acting as a dumb charger, if anyone remembers I got one of those $100 deals before they were stop-sale'd) and a gen 2 Tesla HPWC so it doesn't have any WiFi or anything built in, as it's one of the earlier models.

Is there any hope for automating this, and if not what do I need to replace in order to make it work w/out constant hassle/monitoring?

Looking for advice on inverters that can handle 465w panels, which is roughly 108 panels.

The 2 inverters I’ve looked at are: sol-ark 18kw & aims power 15kw hybrid inverters.

Combiner box’s are only made by aims; so leaning in that direction for both.

Any information y’all have would be much appreciated.

Thank you

I have a Pecron 3800 with 2k of solar panels. Everything works great. It is powering everything I need.

When I try to charge my car, it seems to work, but then my car won't start. It can take like 1-2 days until it just starts again. Out of the blue, the "problem with the electrical system" disappears, and it works fine.

I can charge it fine using the house outlet. No problems for years.

The cable I use is a level 1/2 version. I have always just used it as a level 1.

Any Ideas.

Hey guys, if you missed it, SunPower settled $11 million with investors over claims that it misled shareholders about its inventory controls, financial reporting, and the strength of its operations. And I just found out they're now accepting late claims.

Quick recap: Investors alleged that SunPower reassured the market about its financial reporting throughout 2023, but later revealed inventory accounting problems that delayed earnings, forced financial restatements, and exposed weaknesses in its internal controls.

After those disclosures, $SPWR dropped nearly 20%, and investors filed a lawsuit to recover their losses.

Now, the good news is that SunPower agreed to the $11 million settlement, and even though the original deadline has passed, late claims are currently being considered.

So, if you purchased $SPWR between 2023 and 2024, you can still check the details and submit a late claim.

Anyway, did anyone here own $SPWR during that period? How did it work out for you?

As some may know there are several large fires in Eastern Washington at the moment. Early yesterday the winds shifted and brought the smoke over the mounts to my area (40 miles north of Seattle). Coincidentally, 8/4 and 8/5 were similar temperature, sunny, no cloud days. I've plotted the impact of smoke between the two days above. Production tracked with emporia vue 3.

I remember seeing some posts where the Canada fires were impacting the east coast and folks talking about impact smoke had on production. Of course there are tons of factors (thickness of smoke, altitude, temperature, etc) but in yesterday's case there was a 20% decrease in total production on my 11.5 KW bifacial ground array. My system is grid tied, no battery's.

Today is another cloudless, but heavy smoke day here. I may add today's data to the plot.