Loc: Portland, OR
I take nothing that requires recharging on the trail. I take almost nothing electronic. I find that electronics tend to be heavy for the functionality they deliver and when you add in a recharging unit of some sort they become even heavier. No thanks.
Loc: The Southwestern Deserts
I take an iPhone that makes amazing photos, has a dedicated gps chipset for an extra navigation tool and holds all my plant reference books, all things I do when in the wilderness canyon and mountain country. So it saves me quite a bit of weight and bulk. But there are already many power packs on the market of various storage capacity so this is nothing new.
I carry a Brunton battery+PV panel combo, but they seem to have stopped selling them. Have two: one is a rectangle with PV on one side and the other is cylindrical with a flexible PV that rolls out into a large panel. The second one recharges more quickly.
My kit is migrating to rechargeable devices, including headlamp, InReach and phone (for connecting to InReach). The camera doesn't field-recharge, although such cameras do exist.
For a night or two it's hard to make a case for field recharging but for longer trips it justifies itself pretty quickly, because it's essentially unlimited on the back end with no spare batteries needed.
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