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.

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[–] ladicius@lemmy.world 19 points 1 month ago (1 children)

Also don't charge devices directly from solar power because voltage changes drastically due to sun movement and clouds. Better load a power bank and use that to charge the other devices as power banks are much more resilient to changing voltages.

[–] Dookieman12@piefed.social 13 points 1 month ago (1 children)

don’t charge devices directly from solar power

Unless your power bank has a built in charge controller, this should also include your power bank. At its core, a power bank is nothing more than a big ass lithium ion (or maybe potassium ion, if it's newer) battery, just like the one in any other device.

[–] gandalf_der_12te@feddit.org 2 points 1 month ago* (last edited 1 month ago)

potassium ion, if it’s newer

i think you mean sodium ion?