Solar Charger?

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Dave L

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I tried the search feature and didn't find much, so I'll start a thread. Has anyone ever seen, or perhaps cobbled up, a solar charger?

What I was thinking was that one could salvage a bunch of solar cells from old yard lights and put together a charger for ecigs (or laptops or cell phones). I don't know much about electrics, thinking I should learn. Dunno if there would be a market for such an item but it might be handy one day. You could take it camping - or if the SHTF like some folks think it will, it'd sure be cool to still be able to vape!
 
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Haktuspit

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    If I was to ever buy a solar charger it would def have to be this one.

    Imagine: A world full of zombies. Food and water are hard to come by. You're on the run but you have a backpack full of e-juice, clearos, carts and batteries you've been hoarding for months (other non essential items have been left behind). All the tobacco fields are gone and those that are cig smokers have nowhere to turn. You however happily vape away on your ego's all day and charge them up every time it's sunny out!

    Solar Charger, Solar Backpack, Solar Laptop Charger, USB Battery
     

    mkbilbo

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    What I was thinking was that one could salvage a bunch of solar cells from old yard lights...

    Not really, no. I salvage those for potential future widgets. They're meant to trickle charge NiCads over a ten to fourteen hour period and have no real charge regulation, just blocking diodes. The ones commonly used in LED "garden decorations" usually put out 60 to 70mA per hour at around 3v. That's a good four hours in full sun to charge a 280mAh battery. You'd need four to get the charge time to an hour. And this is all talking NiCad batteries. Not LiPo.

    Lithium polymer (LiPo as they call 'em) is trickier. Now there are chips that do regulation (lot of vape kits must use them) but typical input is about 5v at 510mA. 5v half amp solar cell... so 2.5 watt minimum. Add some for inefficiency, not getting direct sun all the time... at least 3 watt?

    I can find a durable 6v 3.4w for $35. A LiPo circuit kit, $25. So $60 to start. But you can get solar USB for less.

    Come to think, though, what would be kinda cool would be something like a Sunforce 15w panel charging a small sealed lead acid, drop that to a 5v regulated USB and charge away...
     
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