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I am wanting to build a small 12 volt UPS, specifically for and only for a household router. It runs on 12 volts. There are some lithium ion powered 12 volt mini UPS setups out there for not a lot of money but I had wondered if I couldn't do a little better than that. Reviews on them suggest...

I know what I want to accomplish but I think there are multiple ways to get there. I could use some advice in sorting it out. Goal: Greenhouse exhaust ventilation. What I need to happen, I need to move air when it is hot. It is hot when the sun is shining. It is not hot when the sun is not...

Do half cell panels play well with MPPT charge controllers? The reason I ask is because I read a comment, somewhere, that I had thought suggested this was sometimes a problem. I have looked and looked trying to find that comment again but have not been able to find it. I've seen a panel on...

Have been looking at specs for various "solar generators" online and think that something like the Bluetti AC300+ 1*B300 system could do well for what I would like to use it for. There is no need for 220v electric and it would never be hooked to any kind of grid-tie setup. It would primarily be...