Answer by Michael for Power for devices in cold and dark?
One thing I just realized: Charging a battery with a battery (powerbank) just so you can power an LED is pretty inefficient and inconvenient. Why not connect a big battery directly to your headlamp?...
View ArticleAnswer by bobflux for Power for devices in cold and dark?
First things first I'm an EE so let me rant about units ;)I have modest power requirements but do need to top up a 2350 mAh headtorch battery every day and a smartphone every 2nd or 3rd day.The unit of...
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Answer by uhoh for Power for devices in cold and dark?
There's no question that hydrocarbon storage of energy is way lighter than battery technology, cf. Wikipedia's Energy density; in energy storage and fuels.Carbohydrates + dynamoSo I wonder why, with...
View ArticleAnswer by Michael for Power for devices in cold and dark?
I think it might just be doable with powerbanks. For example if you can afford 5 Nitecore Summit 20000 power banks (or borrow them somehow) you’ll have 337Wh of “rated energy” (i.e. at the power bank’s...
View ArticleAnswer by ManoG1234609 for Power for devices in cold and dark?
Power banks seem like a terrible option for such a long trip.Don't forget that power banks often don't have the capacity they are advertised for, and that the capacity isn't transferred 1:1 to the...
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Answer by JonathanReez for Power for devices in cold and dark?
If it's going to be windy wherever you're hiking, you could potentially bring a portable wind turbine. This model called "Shine Turbine" weighs 3 lbs and seems to be reasonably small. It claims to be...
View ArticleAnswer by fgysin for Power for devices in cold and dark?
I think you have already listed your options:Wood-burning stoves with USB recharge ports, e.g. the one from Biolite. I have never used such a device, but according to the review it works, if slowly....
View ArticlePower for devices in cold and dark?
First post here -- and not an electronics expert at all. I really hope, though, that someone might give me an idea about best practice for this:I haven't found a similar question using search.What is...
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