| | |  | Solar backpack | Home » » Voltaic Solar Backpack - Off-Grid Solar Backpack - Solar Bag | | | | | | Colors: | | | | | Description: | | The Off-Grid Solar Backpack by Voltaic Systems is the largest of the Voltaic Solar Backpacks. This very powerful solar cell phone charger not only charges most popular cell phones like iPhones, Blackberrys, HTC, Motorola and many others but also charges devices such as digital cameras, portable gaming devices and Portable GPS units. This bag has lots of room - 1500 cubic inches (25 liters) storage inside for all of your things, the Off Grid Voltaic Solar Backpack gives you the ability to pack up, carry and charge your devices! Whether you are going camping, hiking or backpacking this solar bag is a great way to keep your electronics charged and safe. | | | Features: | |
• 1 hour of sun will provide about 3 hours of talk time for your cell phone and 4-5 hours of sun will provide a full charge.
• Ideal for solar charging mobile phones, iPods/mp3 players, iPhone, smartphones/PDAs, portable gaming devices, GPS units, digital cameras, Bluetooth headsets, and more.
• Includes a 3,000 mAh Universal USB Battery so you have back up power when the sun goes down. The battery can also be charged using the USB power cable via a computer. Battery will fully charge in 7 hours in direct sun and 5.5 hours from USB to computer or laptop and will provide you with up to 19 hours talk time or 48 hours music playback
• A pair of removable 2 Watt solar panels provide you with a total of 4 watts of charging power. Zip off the solar panels and then you can attach them to another bag, bike rack, etc. with the included straps and clips!
• Wire channels are placed throughout the bag for headphones, bladder tubes, etc.
| | | Product Details: | | | Average Customer Rating:
|  based on 3 reviews |
| | | | Customer Reviews: | |
Average Customer Review:
 ( 3 customer reviews )
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Most Helpful Customer Reviews
4 of 4 found the following review helpful:
 Great packNov 30, 2010
By Grant Muir
Very happy with my purchase! Great quality pack, excellent construction and the solar panels and battery are top quality. my only complaint is it needs more internal space a 15" macbook in neoprene skin only just fits into the rear laptop compartment, and I regularly carry 2 plus other items.
2 of 2 found the following review helpful:
 Rob, LondonJul 10, 2011
By Evenflow05
An excellent backpack with attached solar panel. They really have thought of everything including being able to zip off the solar panel and just use separately.
3 of 4 found the following review helpful:
 Terrible backpack fabric. It will tear off if fully loaded and on long trekJan 31, 2012
By AstroSeeker
"SkyWalker"
UPDATE:
I wanted to know what actually happen when I have only one or two charge lights on (not blinking); is it charging in this case? So today I rigged up some
plug and I connected a power analyzer between the storage battery and the pannel. I placed the solar pannel against the window so I don't have direct sun light.
in this set up, I got two non-blinking charge lights and the power analyzer reported a current of 0.0 to 0.03 Amp entering the storage battery (most of the time,
there is no current at all). So this means that when the charging lights are not blinking even if they are on, there is not much charging going on.
On the other in direct sun light, it is different. In this case, the lights are blinking and I can get something like 0.3 to 0.5 Amp.
--------------------------------------------------------------------------PREVIOUS UPDATE---------------------------------------------------------------------
I always have the storage battery (one that came with the backpack) plugged into the pannel. I found that even when I am not using the battery to charge anything,
it will drain quickly when it is not being charged in the sun light. For example after being out of the sunlight for 12 hours, I lost one charge light. It went
from 4 charge lights to 3. I do not like the almost-to-nothing documentation that came with this product. It never explain any of this. Why is the battery
drain too quickly when I am not using it?
------------------------------------------------------PREVIOUS UPDATE:----------------------------------------------------------------------------
I finaly get enough summer sun light to test this backpack charging ability. This is what I found. The storage battery's charging lights will only be blinking
sequentialy (indicating that the battery is being charged) when in direct sun light. When not in direct sun light (like near a window), the charging lights are not blinking, but one or sometime two charging lights will be on. What
does this means in this case? Is the battery being charged in this case? I really do not know (the documentation is not clear on this). I assume
that the battery is being charged at low capacity (at least I hope that is the case) and I also assume that
the number of lights that are on indicate the charging capacity.
Also even in direct sun light, the solar panel's output charging current is not as high as the current drawn by the cell phone so when I am charging my Nokia cell
phone while walking or riding my bike in direct sun light, the storage battery will be drain. This means that my cell may not be completely charged and the
storage battery may be completely drained. This is especially true if the storage battery is not fully charged at the start of a charging session. This is disapointing because what is the point if I have to fully charged the storage battery at home before begining a trip. I would like to be able to charge my cell and still have enough excess current to charge the storage battery as well. The longer I use this backpack, the more I am disapointed with its performance.
------------------------------------------PREVIOUS UPDATE----------------------------------------
Well I have been using this backpack for 4 months now and it is ripped in a dozen places. I have had it repaired three time
now. I am not happy! Please do not buy this product. I am lucky I am traveling outside the US where there are many shops
that will repaire my backpack. In the US where there is no such repair shops, this backpack would have been completely useless and I would
have thrown it away after a few months of use. I do not recomend buying this backpack.
------------------------------------PREVIOUS UPDATE---------------------------------------------------------------------------
Due to the winter I have not be able to test the solar charging feature. But the backpack fabric quality is terrible!
When I ordered this backpack, I picked the charcoal pennel. But I got an email from the seller telling me that they "accidentally"
shipped the silver pennel. They wanted to know if that is OK or I can wait two extra days and they will ship me the charcoal pennel.
I thought it's not a big deal so I say OK, I'll take the silver one.
Well when I got the backpack, it had a small wear near the pennel zipper that made it hard to zip an unzip the pennel pocket. I was not
happy but I did not want to deal with returning and reshipping so I let it go. I know, I can not say for sure that they intentionaly sent me
faulty backpack but I am saying I did get a weird feeling in this case. If my subspicion is correct, I think it is extremely unprofessional of
them.
I had not used the backpack until a month ago when I went on a 200km biking trip. On this trip the backpack fabric torned (ripped) in three places.
All near the front pocket. It was not the threading that got ripped. It was the fabric near the threading area the got ripped) Fortunately, I was traveling in an Asian city where they can repair backpack. Thus I had it repaired and it seems fine.
but I have to be very carefull to not load the backpack too much again.
I owned two other non-solar backpacks and I regularly overloaded ( to a much higher degree than I loaded the solar backpack) them for a year now and it never ripped.
It is winter time so I have not fully test the solar charging feature but where I was biking, there considerable sun light and my cell phone
almost completely drain the battery in the backpack. Thus at this point I don't have much confident in the solar charging feature but I will
wait until summer time to test in full direct sunlight and I will give an update.
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* Estimated shipping rate for US 48 states. Final rate calculated at checkout. |
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