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goal zero power packs

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surfivor:
I was looking at this $300 lithium power pack that can charge a phone about 14 times and a laptop maybe twice. It's not clear how the laptop connects to it though.

http://www.goalzero.com/p/207/sherpa-100-power-pack

With something like that I could run some powerful LED lights at my camp and not have to keep running out to my car to charge my phone and IPod .. This thing can be charged from solar panels as well .. The panels they recommend is $200 but there are also bigger ones

 I just bought a Alladin lamp that I hadn't even tried yet, I forgot to pack it this weekend. but the LED lights pose no fire hazard, though I would still use the oil lamp since I bought it already and it could save using the batteries


This one seems a little more power, but it is lead core (though only 12 pounds). It
costs about $179 and you can replace the internal battery for $50. It also can charge from the same solar panel but takes longer to charge. It has a regular AC output so charging a laptop seems straightforward. Both of these can charge from the wall or car (I assume cigarette lighter or USB) as well.

http://powerfulproducts.com/goal-zero-yeti-150-solar-generator.aspx

If I had both of these I could run my laptop at my camp for a few hours a day perhaps intermittently .. Though unless between jobs and sending out resumes I don't have a strong need to do that so I am thinking of just getting one of them, perhaps the first one for starters. If I use my tablet instead I can run that for much much longer

 The next one up is a 30 pound lead core that can run a laptop quite a bit longer and costs around $400 .. but it seems bulky and more than I need for now

surfivor:
I ordered the Sherpa pack plus a USB light .. I saw the light at EMS. It is very bright

Order Summary
          Item Name         Qty         Price Each         Item Subtotal    
          
     Sherpa 100 Power Pack    Sherpa 100 Power Pack
Usually ships in 2-3 business days         1         $    299.99         $    299.99    
     Lighthouse 400 Lantern & USB Power Hub    Lighthouse 400 Lantern & USB Power Hub
Usually ships in 2-3 business days         1         $    79.99         $    79.99    

Smurf Hunter:
Once you have a clear mission or purpose, you can allow math to guide you.

In my case, ultra portability wasn't a priority.  For about $300:

$159 - 100 watts solar kit+charge controller: https://www.amazon.com/Renogy-Watts-Volts-Monocrystalline-Bundle/dp/B00B8L6EFA
$100 - 75AH Optima yellow top deep cycle battery (refurbished)
$50 - 800 watt inverter: https://www.amazon.com/Cobra-CPI-880-Inverter-output/dp/B001TE0IMG

That's far bigger than anything I can take hiking of course, but I can indefinitely power our home refrigerator using full sun (5-6amps I tested) during the summer months.

I'm more of a DIY guy, and prefer to think in terms of amp hours, rather than "charge a phone N times".  How the heck do they know which laptop or phone I have?

If I was needing to backpack with portable power, that's when an investment into lithium chemistry makes sense.

surfivor:

Smurf .. It looks like the battery weighs 60 pounds ? It also can't freeze ? Alot of the lead batteries cant freeze

http://wp.renogy.com/lycanpowerbox.html

============

 I am not going backpacking but I ride around in my car and back and forth to my camp with all kinds of gear, clothing and all packed into totes so I like small stuff which is versatile and could be used in a backpacking situation but that is not the main purpose


 If I could set up a big battery pack so that it was 65 feet from my yurt and run a line that far that would be interesting. The battery could go inside the steel storage container with solar panels on the roof of the storage container. It would need to be a battery pack that would be fine left in freezing weather all winter and I would just leave it there. I am not sure with a long line like that if you would use more power running the power cord 65 feet or more ?

Smurf Hunter:

--- Quote from: surfivor on November 28, 2016, 10:09:51 AM --- I am not sure with a long line like that if you would use more power running the power cord 65 feet or more ?

--- End quote ---

DC voltages can drop quickly with added wire length.  This goes for DC wiring from solar panels to the charge controller, but more importantly the distance between the controller and the battery.

If you need to run 50+ feet, and ultimately want AC power from an inverter, consider running the long distance length using a normal 100VAC extension cord.  AC does much better over distance.  I believe Carl does a similar trick

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