Is it just me relapsing back into old fart mode, or are these things a solution to a problem that doesn't exist for the vast vast majority or outdoors enthusiasts?
Seems like you're more likely to run out of food quicker than you'll run out of electricity these days.
Lets say you do 4 days before visiting a town to restock.
A small 18650 charger weighs around 35g, 1 x 3400mAh 18650 battery at just under 50g
Lets say you're a really heavy electronics user and you need 3400mAh a day
4 x 50g for batteries = 200g
1 x 18650 charger = 35g
That's under 250g for a reliable 4 days (at least) worth of electronics use.
It doesn't matter if it's windy but not tooooo windy, or if it's sunny or not.
Throw in another 100g and you've got a mains charger and you can go indefinitely.
Easier still, i've got a 15,000mAh sealed battery pack, weighs 385g and i've had 1 weeks use out of that.
For those few people that are doing long unsupported hikes in wilderness areas and are catching or hunting their own food i can see why it'd be worth faffing with gadgets like these, for the rest of us there's already good, cheap, lightweight, reliable, working solutions.
