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I found this by accident and thought it might be useful for people DIYing a wind or turbine system. The A/C condenser fan on my house went out and I had to get an A/C guy to replace it under warranty. It turns out that these newer fan motors, called ECM motors, are notorious for failing...

I've been doing solar for a while now, so I should know this, but I find that I am stumped over what should be a trivial question. Under normal operation, I want the solar panels to grid tie into the house wiring, send excess to the batteries, but be incapable of exporting. This way, solar is...

Does anybody know of a cheap (< $50) MPPT-like solar charge controller? I was looking at the MPT-7210A that is all over ebay, but upon further review, it is a boost converter and doesn't work for normal buck converter operation. That is, it needs panels to be lower voltage than the batteries...

When I go to the page: https://diysolarforum.com/threads/diy-12v-lithium-battery-low-voltage-while-under-light-load.12993/ I get this.... Notice the gray bar going down the left side. Going to page 2 makes the problem go away, but I can't read the original post. Can't do anything. Also...

I bought an iSunergy MPPT solar charge controller off Amazon. So far I am not happy with it due to the lack of documentation. As such, I need help figuring out the settings. The manual simply gives huge ranges and you are supposed to guess at a good setting. The factory said they don't give...

I live in Florida and our electric utility is Florida Power and Light. A few years ago, they switched out all the mechanical meters to electronic ones.. Will a standard electronic non-bidirectional electric meter in Florida tell on me if I use a grid tied inverter and push current from the...

I am considering buying a skybox all in one inverter. I have an A/C with a high start load. I will probably get a soft start kit for it, but I don't think that will be enough. The skybox doesn't have a surge capacity so 5KW is it. If I temporarily connect a 4KW inverter (8KW surge) to the...

I know there are several manufacturers that make LFP car batteries, but they are always way overpriced. With the price of LFP cells coming down, it seems feasible to make my own since my car doesn't need a huge battery. Since the LFP cells are capable of doing the job, the bottleneck is the...

I know you aren't supposed to do it, but if I have a 240V A/C unit that uses split phase US 240V and does not use the neutral wire, can I power the A/C compressor with a 230V single phase Euro inverter. The reason I ask is that 230V Euro inverters are a tad cheaper than US split phase...

I just got a roll of 2p nickel strip from a guy on ebay. Allegedly 99.9% pure nickel. However, I spark tested it and it gave off sparks from a grinding wheel. When I spark tested some other nickel strip I had, it gave off no sparks. Before I accuse the ebay seller of being a liar and a...