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Q&A At what point does a solar charger become more efficient weight wise than batteries?

There are a lot of variable's Season: Summer has more sun then other times of the year Direction of travel: The charger needs to face direct sun to be most effective, You can't just put it on you...

posted 4y ago by James Jenkins‭  ·  edited 4y ago by James Jenkins‭

Answer
#3: Post edited by user avatar James Jenkins‭ · 2020-05-26T13:54:25Z (over 4 years ago)
  • There are a lot of variable's
  • * Season: Summer has more sun then other times of the year
  • * Direction of travel: The charger needs to face direct sun to be most effective, You can't just put it on you back and leave it there.
  • * Cover: More tree cover = Less sun
  • * Budget: More efficient solar chargers tend to be more expensive
  • * Resupply: How often will you be able to get new batteries and how many will you need to carry.
  • Luckily for your question about the Appalachian Trail, the answer is simple. A solar charger never becomes more weight-efficient, a couple of references from experienced hikers.
  • >Throughout her adventures, she has attempted to use a solar charger a number of times. On the AT, Kelley sent her charging system home after the first 30 miles when she realized the tree cover wouldn’t allow for enough direct sunlight. [Source](http://www.sprinkleshikes.com/jenhikes/2016/12/19/thinking-about-a-solar-charger)
  • .
  • > The nickname of the AT is the green tunnel. Why? Because you are in the forest. Not direct sunshine. Get a power pack not a solar charger. [Source](https://www.reddit.com/r/AppalachianTrail/comments/3fp9ke/need_advice_from_experienced_at_hikers_regarding/)
  • There are a lot of variable's
  • * Season: Summer has more sun then other times of the year
  • * Direction of travel: The charger needs to face direct sun to be most effective, You can't just put it on you back and leave it there.
  • * Cover: More tree cover = Less sun
  • * Budget: More efficient solar chargers tend to be more expensive
  • * Resupply: How often will you be able to get new batteries and how many will you need to carry.
  • Luckily for your question about the Appalachian Trail, the answer is simple. A solar charger never becomes more weight-efficient, a couple of references from experienced hikers.
  • >Throughout her adventures, she has attempted to use a solar charger a number of times. On the AT, Kelley sent her charging system home after the first 30 miles when she realized the tree cover wouldn’t allow for enough direct sunlight. [Source](http://www.sprinkleshikes.com/jenhikes/2016/12/19/thinking-about-a-solar-charger)
  • .
  • > The nickname of the AT is the green tunnel. Why? Because you are in the forest. Not direct sunshine. Get a power pack not a solar charger. [Source](https://www.reddit.com/r/AppalachianTrail/comments/3fp9ke/need_advice_from_experienced_at_hikers_regarding/)
  • As an alternative google 'shoes battery charger' there are a number of hits for 'piezoelectric transducer' they convert physical energy into AC electricity, you can charge your devices while hiking sun or no sun.
#2: Post edited by user avatar James Jenkins‭ · 2020-05-26T13:50:03Z (over 4 years ago)
  • There are a lot of variable's
  • * Season: Summer has more sun then other times of the year
  • * Direction of travel: The charger needs to face direct sun to be most effective, You can't just put it on you back and leave it there.
  • * Cover: More tree cover = Less sun
  • * Budget: More efficient solar chargers tend to be more expensive
  • * Resupply: How often will you be able to get new batteries and how many will you need to carry.
  • Luckily for your question about the Appalachian Trail, the answer is simple. A solar charger never becomes more weight-efficient, a couple of references from experienced hikers.
  • >Throughout her adventures, she has attempted to use a solar charger a number of times. On the AT, Kelley sent her charging system home after the first 30 miles when she realized the tree cover wouldn’t allow for enough direct sunlight. [Source](http://www.sprinkleshikes.com/jenhikes/2016/12/19/thinking-about-a-solar-charger)
  • > The nickname of the AT is the green tunnel. Why? Because you are in the forest. Not direct sunshine. Get a power pack not a solar charger. [Source](https://www.reddit.com/r/AppalachianTrail/comments/3fp9ke/need_advice_from_experienced_at_hikers_regarding/)
  • There are a lot of variable's
  • * Season: Summer has more sun then other times of the year
  • * Direction of travel: The charger needs to face direct sun to be most effective, You can't just put it on you back and leave it there.
  • * Cover: More tree cover = Less sun
  • * Budget: More efficient solar chargers tend to be more expensive
  • * Resupply: How often will you be able to get new batteries and how many will you need to carry.
  • Luckily for your question about the Appalachian Trail, the answer is simple. A solar charger never becomes more weight-efficient, a couple of references from experienced hikers.
  • >Throughout her adventures, she has attempted to use a solar charger a number of times. On the AT, Kelley sent her charging system home after the first 30 miles when she realized the tree cover wouldn’t allow for enough direct sunlight. [Source](http://www.sprinkleshikes.com/jenhikes/2016/12/19/thinking-about-a-solar-charger)
  • .
  • > The nickname of the AT is the green tunnel. Why? Because you are in the forest. Not direct sunshine. Get a power pack not a solar charger. [Source](https://www.reddit.com/r/AppalachianTrail/comments/3fp9ke/need_advice_from_experienced_at_hikers_regarding/)
#1: Initial revision by user avatar James Jenkins‭ · 2020-05-26T13:48:34Z (over 4 years ago)
There are a lot of variable's

* Season: Summer has more sun then other times of the year
* Direction of travel: The charger needs to face direct sun to be most effective, You can't just put it on you back and leave it there.
* Cover: More tree cover = Less sun
* Budget: More efficient solar chargers tend to be more expensive
* Resupply: How often will you be able to get new batteries and how many will you need to carry.

Luckily for your question about the Appalachian Trail, the answer is simple.  A solar charger never becomes more weight-efficient, a couple of references from experienced hikers.

>Throughout her adventures, she has attempted to use a solar charger a number of times. On the AT, Kelley sent her charging system home after the first 30 miles when she realized the tree cover wouldn’t allow for enough direct sunlight. [Source](http://www.sprinkleshikes.com/jenhikes/2016/12/19/thinking-about-a-solar-charger)

> The nickname of the AT is the green tunnel. Why? Because you are in the forest. Not direct sunshine. Get a power pack not a solar charger. [Source](https://www.reddit.com/r/AppalachianTrail/comments/3fp9ke/need_advice_from_experienced_at_hikers_regarding/)