USD $129.00 right now.
Your hat as a solar panel?
MIGHT work well if hiking many hours in a very sunny location.
EcoFlow says it’ll output a maximum of 5V / 2.4A, so you can expect it to keep your phone or tablet topped up rather than producing anything too life-saving. There’s no battery on board, naturally, so you’ll need to keep a long wire handy to run from your cap down to whichever pocket you keep your devices near.
Engadget
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