I looked into buying a solar charged battery bank. This product category is completely dominated by no-name 3rd party sellers. 🚩
Charge time is key. No listing had even a rough estimate for solar charge time. 🚩
An example unit claims max solar power 1.13 w, with enough battery power to charge an iPhone 14 Pro twice. Working from that, you'd need ~25 hours of full sun to fully charge. I'd roughly estimate that means at least 3 days in summer. Not quite worthless, but close…