Coleman 22007 7.5W Folding Panel

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Price: $33.03    

Product Feature

• Charges USB or 12 volts powered devices
• Charges smartphones, cell phones, digital cameras, GPS systems and more
• Fully weatherproof for added durability
• Perfect for traveling, hiking, camping, emergency situations and a variety of outdoor activities
• Comes equipped with grommets for easy travel and storage

Product Description

Sunforce Coleman 7.5W Folding Panel helps to charge USB or 12 volt devices with the Coleman 7.5 watt folding solar charger. It easily charges smartphones, cell phones, digital cameras, GPS systems and more anywhere and at anytime. This folding solar charger is a portable unit, perfect for traveling, hiking, camping, emergency power solutions and a variety of outdoor activities. It has a lightweight and compact design. Place this unit in a backpack or suit case. The charger can be unfolded to charge an electrical device and fold it up when the device is fully charged. This foldable solar unit provides for ultimate convenience, making it a permanent staple for all traveling and outdoor needs.

Coleman 22007 7.5W Folding Panel Review

During this review, I am going to be comparing the Sunforce 22007 Coleman 7.5W Folding Panel to the Goal Zero Nomad 7, which is the only other solar charger that I have had experience with and the product with which it is competing. Right out of the box, I was impressed by its compactness. I opened its velcro latch and spread it out. The charger has square, polycrystalline solar panels that make efficient use of space. The panels don't have a perfect appearance, as the horizontal conductive lines are inconsistent, but I don't expect this to hurt the panel's performance. Along the edges it has rope loops that are meant to be attachment points, which are comparable to the Nomad 7. On the back of the panel, there is a zipper enclosure that includes a power regulator which has a permanently attached 12 Volt adapter and a female, USB port. When you unzip the pouch all the way, the 12 Volt adapter tends to fall out. I couldn't wait to test it out, so I ran outside and pointed it toward the sun. At 3 in the afternoon on a clear day, I measured 5 Volts and .83 amps (A little over 4.15 watts). Compared this to the Goal Zero Nomad 7, which measured 5 Volts at .65 amps (3.28 watts) under the same conditions. I am guessing this difference in performance is due to the 0.5 extra watt of power rating from the Coleman Sunforce panel, as well as a better USB power regulator.

I tested the panel in low light conditions: An overcast morning, and it didn't produce any power, whereas the Goal Zero Nomad 7 did produce 5 Volts at 40 mA. This difference is probably due to polycrystalline solar panels vs monocrystalline solar panels, which are known for the low light efficiency. This was a very low light test.

I also tested it in a mostly cloudy midday sun situation: The Sunforce Coleman panel produced 5 Volts at .35 amps, whereas the Nomad 7 produced 5 Volts at .3 amps. They were both able to start a charging cycle on my phone under these conditions: 65 percent sky coverage according to the National Weather Service with stratocumulus perculidus clouds, with very little sky visible. This result reinforced my confidence in the Sunforce panel, given my foggy morning test the day before.

I purchased this solar charger to provide me with power while camping, so its compact nature is a plus, and it will be an invaluable resource when in an emergency situation. Knowing that you will be able to charge your communication and navigation devices with only the power of the sun is a great feeling. At this price, I couldn't pass trying it out, as I intend on getting more as gifts.

Compared to Goal Zero:
Pros:
Better output. at 3 PM 5 Volts .8 amps compared to 5 Volts .65 amps with Goal Zero in direct sunlight.
Smaller
Lighter (Even with 12V adapter. It isn't removable)

Cons:
12 Volt adapter tends to flop about when you open the zipper.
The usb port is very close to the zipper enclosure if you intend to enclose your charging device within the zipper. (This may have not been intended by the designer)
Perhaps slightly less low light performance.

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