Verdict
A 20k USB-C PD bank is the best value/weight for most people. It charges phones fast, runs lanterns/headlamps, and pairs well with a 20–28W solar panel: panel.
Pros
- Great Wh/£
- USB-C PD both ways
- Airline-legal (under 100Wh)
Cons
- Not weatherproof
- Slow to refill from tiny panels
Specs to look for
Buy it if…
- You want one bank for outage + travel.
- Your kit includes a foldable 20–28W panel.
Skip it if…
- You need laptop charging (get 45–65W, 25–30k mAh instead).