Quote:
Originally Posted by neil_swann80
If there are citrus fruits growing on the island you could rig up a few (around 30) in series you could recharge your ereader!
If life gives you lemons... read.
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Any fruit or vegetable acid or other acid. It's the pair of dissimilar metals plus an acid electrolyte that gives the electricity, not the lemon.
Or you could use low tech solar power. Burn willow to make steam that rotates paddles on a motor. The vibrator in some phones is motor with an offset weight on the shaft. That might be useable as small hand-cranked, water, steam, wind or tidlal powered generator.
Or make sure to be marooned with a "solar power bank" or portable solar panel as well as ereader. Should be good for nearly 10 years.