Best panel
For expedition camps where there is no lodge at all
BigBlue 28W Solar Charger
28 W folding panel, ~670 g
4.3 on Amazon
Genuinely charges a power bank in a Himalayan day of clear sun, which is a real advantage on a camping trek — on a teahouse trek it is 670 g replacing a service that costs a few dollars.
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What you get
- Real output in high-altitude sun, which is fierce
- Charges the bank while it hangs off a pack
- No dependence on lodge solar being working
What it costs you
- Heavy, and useless in cloud
- Needs to face the sun, so it wants a rest day, not a walking day
- A teahouse trek does not need it
Do not buy this if: Any lodge-based trek. Lodges charge for power precisely because they already have panels.
Treks we recommend this for
Not every route needs it. These are the ones where our guides would put it on your list.