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I think your goals overlap heavily with modern window AC units as well. I really like my midea U-shaped window unit, uses around 800w at full blast on 110v. It is 8000btu but they make a 12000btu one. They are SEER 15 and I'm honestly not sure I need it to be much more efficient than it is. It...

I saw my purchase as directly economically supporting someone I hope will be around in a few years to build other products (or maybe help me troubleshoot). I could have easily spent a lot more money on Aliexpress or Amazon and received various black boxes that I wired together with no...

I have a somewhat similar system. I use a U shaped Midea window AC that is 8000btu. My much older traditional 6000btu AC window unit would occasionally trip up my inverter when it started and other things were being used in the house. My newer midea has never caused an issue. The difference is...

I think this was it.

Just to add some info, I actually drove to their office building and purchased twenty 10ah LTO flat cells from them. They aren't really set up for customers to walk in, but I said I was local and they said sure stop in. The guy was nice and showed me the 10ah and the Toshiba LTO cells I was...

Yes, I shall hense forth and with great haste be banned from further "inteligent" discussion... You've made my day. :)

I just recently learned there are now other companies that do the precharged line sets. I think EG4 is another one.

I inherited a super old window AC unit when I bought my house, at least 25 years old. I could mostly get my inverter to run it but if other things were running it could start up and reset everything. It was cool to use it with my solar setup for "free air." Found a clearance Midea AC window...

My sbms120 fluctuates the voltage readings like in your video.

There are a dizzying array of options to do this. I'll throw out one, may not be ideal since you wanted to avoid batteries. There is a guy called Electrodacus who makes a custom designed solar charge controller/battery bms combo. The one he sells now is hard to get due to supply chain issues...

I can't exactly, but I know some heat pumps work by being on or off (duh...) and other fancier ones work at various levels. They can ramp up and start slow. The on/off variety tend to have a starting surge current that is quite high. I assume this messes with the efficiency to a noticable...

I'm no expert on this (pardon my terms), but I believe the correct answer would be to focus on the ohms. There are many youtube videos I think that try and fail to really explain this in a simple way. In this case with resistance heating (no inductive motor, etc), AC and DC operate essentially...

One idea that isn't mentioned much is to hook up solar panels outside and wire them up to solar panels inside. Panels are basically just large surface area diodes that can dissipate heat, and you can more easily keep them near the max power point of the outside panel and get a bit more energy...

I don't know why so many continue to encourage fellow DIYers to buy costly, premade 12v packs and then link them all together in some way that is or isn't recommended by the manufacturer. Sidestep most of the issues discussed above by purchasing your own bms for whatever voltage you decide...

I see enough advantages in an isolated solar system I haven't been looking for this. I doubt I could do it myself and I certainly couldn't use some of the same equipment I already have for "off-grid", and that means $$$$. Most of the issues I envision can be solved by $$ or $$$$$ in some way...

I've used LTO pouch cells in relatively low power applications with no bms at all. If you avoid a bms for whatever reason, I think it would be nice to have a small screen that displays the voltage of each cell in series so you could self-monitor. At the very least a single total voltage...

I understand the general idea "electric hot water heaters" are inefficient and also often require expensive wire upgrades and maybe larger breakers, or even special 240v circuits. People usually learn about it and get disillusioned. I've watched more youtube van/rv/camper/offgrid videos than I...

Is there already a thread? I've seen a few decent designs for DC induction heaters which can get hot enough to melt aluminum. With enough solar you could skip the expensive power supplies and it all suddenly becomes quite inexpensive. Add in some insulation...

I believe this bms system is basically limited only by the battery itself and the connections. In other words, competing bms systems typically specify a safe discharge current and higher rated ones are more expensive, often much more expensive. The sbms120 I use could work on a 20A battery...

There are a multitude of reasons. A farmer near me put up a big system costing tens of thousands of dollars and at the start of their project they were supposed to get $0.XX per kwh and when it was finished and running the rate had been switched to $.xx. It was 4x less, but don't remember the...

Thanks, I also found a link on slickdeals with some info and have just been reading through all the comments. I should have specified that it wasn't super hot when I was using it, but last year my U-shaped 8k never really used over 600w (including 40-80w of my inverter usage in that as well) no...

Yes, in a home. I've been keeping an eye on it because someone else mentioned it should get over 500w when it is really hot out. Now we'll have cooler weather for at least another week. I can imagine it potentially being a lot quieter than other non-U-shaped units. It would work well if you...

I think the sbsms0 has a flexible enough deisgn that the used market will always allow you to get a few used ones. I'm talking with a guy on facebook marketplace right now who has 290w 60 cell panels for $100 if I get enough. You may be on to something, as the 60 aren't all over the place. They...

In my thought experiment, a water tank heats up and there is some energy storage there, but the water tubes heating the floor would make the mass of the wood floor the actual battery storage. My thinking is you don't need to "release it when you need it" if your house is already warm. I could...

Good to see. Thanks for sharing.

One second thought maybe you could get an esp32 with a built-in camera, and if need be, the esp32 could easily control a servo to adjust buttons. It could probably just hit buttons, then wait two seconds and then snap a photo and post to a local address. I'm no coder, but I finally gave up and...

I seem to keep reading over and over that white "something" is really the best source of reflected light. I like your idea of using the water to cool the panels, and you would have a decent supply of it nearby, and power to run a pump when it was sunny out.

But generally, shouldn't a well-educated person purchase a 3000w/12v inverter expecting to never get anywhere near 3000w? For the price, it could work well as a 1500w or 2000w hard limit inverter... since you are the one designing and using the system. For what its worth, I've been using my...

I just noticed on his forum Dacian purchased a Victron mppt unit and is currently testing it with a similar dssr50 and sbms0 setup side-by-side. I look forward to his results in the next few weeks. I'm happy enough with my sbms120 that in 2.5yrs I haven't considered switching but just added more...

One person's primitive is another person's simplicity and elegant design. What type of system were you attempting to set up that couldn't be done with the Electrodacus system? I have a 4000w cheap inverter using 200ah 8s 24v lifepo4 battery. The sbms120 keeps my cells voltages very close and I...