It's easy to find technical information about this product or most other products on the internet. When I buy a product I am MORE interested in the real-world experience of the end-user with similar needs and conditions than I am about technical details, and I am not alone. There is more than one way to write a useful review.
I'll bet some of the same people who are complaining about Chad's review would have loved a review with every conceivable technical detail without any in-the-field verification that the thing actually works and holds up.
Again, I used this charger for about 6 months last summer on three different trips to keep my iPhone charged and it worked great. A thru-hike, a three week trip on the Yellowstone River, and a Boundary Waters trip. I used my iPhone a lot. If you leave it plugged in in the shade it will drain power. You should have sun and it should be faced square to the sun. If you do it will charge an iPhone swell. If the battery is very low, say around 15%, it will fully charge my iPhone in about two hours. People can judge for themselves how much sun they'll get on their trip.
Chad gave people useful information in good faith. Chad your odds of pleasing the very technical minded are virtually nill. Write to your audience. Write what you know and don't bluff. Hike your own hike. Write your own blog and let others write theirs.