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Thanks, this has been very helpful. I'll plan on getting the PWM controller for now. That battery would just be for powering laptop, phone and a couple of other USB things, in case of power outage. I've measured my usage and 250WH should be enough for 3 to 5 days usage. And I already have a 12V...

This is the link to the panel: https://www.amazon.com/gp/product/B07ZZ8VY2V There doesn't seem to be much technical description/explanation given, but the below image seems to be the best for showing the outputs... In the Q/A section the manufacturer (I think) gives this answer to a question...

Hello, I've been lurking around youtube and this forum for a couple of years studying solar, and am finally thinking about my first solar purchase, very much a "starter" system. I live in an apartment with a small balcony, so space is a huge limitation. I'm looking at a "Topsolar 100W Foldable...