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.


That was a typo and that’s 300 watts, right? Not 30.
Uh no? It’s fairly small.
300 watts would need at least two full size panels.
So you mean 30 watts pr panel? This is s 100 watts setup that Amazon delivers. Half of your panels and portable. It costs a bit more, but not much.
https://www.amazon.com/DOKIO-Monocrystalline-Foldable-Charge-Controller/dp/B0748FYFSK/
I can get one panel that gives me 30 watts for the same price : https://eur.vevor.com/solar-panels-c_13594/vevor-30w-12v-solar-panel-battery-charger-solar-battery-trickle-charger-maintainer-with-built-in-smart-controller-3-connection-cables-ip67-waterproof-portable-for-rv-car-motorcycle-boat-van-camper-p_010231793059
This is 50w for half your price ( seems too good to be true almost) https://www.amazon.com/Monocrystalline-Portable-Foldable-Charger-Camouflage/dp/B0DDQGKGQ1/
Im not saying these are the best. Im saying 30w is very low these days and og you want a post apocalypse setup, 30w claimed it’s not 30w given and there are better options out there for similar-ish price
This claims to be 250w(!) with one flexible panel and controller…! https://www.joom.com/nb/products/68f8ddd4ed3bfa014c61a351
I seriously need to upgrade mine!!!😆 I have portable double panel that is 10+ years old and should give 75w, but i get max 35 from it. Im sure i need to update some wiring to thicker cables. It cost me about 5 times your setup.
The dimensions of that first panel are more than double compared to mine so obviously it has a higher output. I intentionally wanted one that fits into a backpack. Whatever output this produces is vastly better than the 0-watt charge capability I had before. I’m well aware that spending more money and getting larger panels would give me more output. However, it’s for charging small handheld electronics - not for running a fridge.
I guess I need a banana in there somewhere. Lol
A single panel there is rougly the size of a A4 sheet of paper.