I’m only half kidding. I’m a bit of a prepper and I have lots of powerbanks and devices that charge from USB but besides idling my truck I really had no other way to charge any of them in case of a long-term power outage which seemed a bit of an oversight on my part.

Not like this solves the issue. 30 watts (under ideal conditions) isn’t much but it’s a start.

  • GoatSynagogueBanned
    1·
    2 months ago

    The inefficiency isn’t the battery, it’s the panel. They run at about 20-25% efficiency at best.

      • GoatSynagogueBanned
        1·
        2 months ago

        Might. Might not though. Probably doesn’t, because then it doesn’t sound as good to potential buyers.

        • HerbGrower@slrpnk.net
          1·
          2 months ago

          Usually it does and it will be ideal conditions. So it still won’t make 30w but it will do much better than 8w.