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Are prices going back up? Or did you have to haggle like crazy for that price?

I see you posting on a lot of these battery threads, so I figured I'd ask you're opinion, OP too, why did you choose the vendor you ultimately bought from? The cheapest price of a 280ah LifePo4 on Alibaba right now seems to be about 77$ a cell from Shenzhen Senberry Technology Co. Ltd. for...

Yeah, that's why I mentioned adding the 12v heating element, but still, all that temp change for the minimal voltage of the pump is much better than doing it all with a 300w heating element. Most of the time I think the solar might be enough though, just turning on the power when you want to...

So I see all kinds of videos about diy pool heaters that are just a coil of tubing put inside a frame (usually topped with glass) that is either lined with reflectix or painted black to absorb heat. After pumping water through it they seem to get a decent amount of heat fairly quickly. My...

I'm down in the bay area and it's starting to creep down here too, pretty smoggy haze to the north....

It's a 12v thermostat, you would have to get clever in order to use that. You might be able to use a 120v relay assuming you can find one that will pass 12v on the switch side. In my search last night most of them have minimum voltages... Honestly I like the simplicity of the design I laid out...

Is it a 12v or 120v? I think that makes a big difference. Comparing the two doesn't really make sense. I believe Short_shot was saying his 12v takes an hour to drop 10 degrees, but a small to mid size 120v fridge doesn't take anywhere near that long... And I'm not sure but I might speculate that...

Yeah, it may not be a ton of savings, but it can add up if you're array is limited and you're not getting full sun days, like especially with mobile setups. Iceco fridges are really nice, I would love to have one, but to be honest I'd rather spend the extra money one solar and batteries and just...

Yeah, I was about to give up on the idea before I learned how the remote switch could be utilized. But yeah, the potential power savings really adds up and could make 120v fridges a much more reasonable/practical option. The cost savings alone, not to mention all the extra storage. Just as long...

Yeah, there are power save modes, but a lot of inverters I've seen still pull quite a bit of power. Like the Giandel 4000w I've been considering, it pulls 36w (3a) with no loads. Maybe that isn't HUGE, but it adds up. I'm building out a box truck home and don't want to pay for any fuel other...

Thank You. My brain won't leave it alone, I've been obsessing about it all afternoon. I found a couple pretty cool 120v relays on amazon. They have relays that do all kinds of things its actually really cool. However, it just dawned on me, that the way a simple old school battery operated...

Yeah, I'm starting to feel a bit of a fool right now. I was thinking about this while I was at work and made a post real quick about it on my 10, but I just got home and looked up "inverter remote shut off" on you tube, and the very first video is a guy talking about doing the same thing with...

I was thinking about a way to shut down the inverter when your fridge doesn’t need it and save yourself the sometimes astronomical parasitic loss of the inverter running for no reason. My idea is this: Use two starter solenoids (like the ones used on old Ford trucks), running parallel between...

So if I have a 24v system then I could simply install that and get 64 watts out of the usb c port? Seeing you bucked your voltage up from 18 to 24 I assume you could do the same on a 12v system and get it to work? Would there be any draw backs to using a buck up converter on the 12v system? Like...

So basically, use a buck converter to drop the voltage down to 5v and it should just pull the power it wants? Or would you have to find a specific usb-c boad that will allow that much power to pass. Sorry, I'm a little clueless when it comes to the usb suff. I've seen ports that only have 2amps...

You're right, my mistake, I went ahead and fixed it. I'm basically asking about the laptop charging ports on the solar generators like bluetti and the like. Is it possible to make a circuit like that and how would you go about it? So one could possibly charge a laptop without an inverter.

Would it be better to have a smaller dedicated inverter to run a dorm style fridge and a second one that's larger for running other things? I suppose it depends on what the draw is on the specific inverter but I was thinking about just getting a Giandel 4000w inverter and just running everything...

So I see all these "solar generators" with these high power usb c ports that you can use without turning on the inverter. I'm curious how they pull this off? Does anyone have any idea how to do this? Is it possible to make a plug like this and connect it to the battery bank without having to use...