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I'm on the island of Roatan; 16.348199, -86.467057 I just noticed that the sun is north of my position and having panels facing south at an angle of 16 degrees would be detrimental to solar collection right now. I went looking for a site that can show me the solar path over my position for the...

I need to UPS a smart bakery oven (120v @ 14A) and related machinery (motors & computer control). I can make due with somewhere between 3kw - 4kw demand. I can size the battery storage as needed; that's not a problem. I can't find an appropriate inverter/charger. I'd like an inverter/charger...

The non DIY batteries on offer seem somewhat expensive considering how inexpensive the cells and a BMS are from China. I'm wondering what I'm missing about the batteries on offer from the various manufacturers that could justify their markup.