Field guide entry
Hand-crank charger
Found in 4 guides
Why you need it
A power bank runs out. A crank or solar charger keeps a phone alive for messages and maps for as long as you are willing to turn the handle.
What to look for
A crank or folding solar charger with a standard USB output, and a cable that fits your phone. Check the output is enough to charge, not merely to slow the drain.
Found in these guides
Apocalypse Mode