This slim portable solar mobile charger is one of the best gadget to be carried when you are camping or hiking. It comes with built-in 2000 mAH of battery, which will be charged with two mono-crystalline solar cells producing 4 watts. It has female USB pin where you can plug your Apple iPhone, BlackBerry, or other smart phones which are USB compatible. Instapark Mercury 4S has compact design, it is foldable, and very thin. It can fit into your backpack, purse, etc. When folded, its size is 7-1/4 x 4-1/2 x 1-1/4 inches only. It has good lot of good reviews on Amazon and Instapark has a good reputation in solar industry.
Instapark Mercury 4S Ultra-slim Portable Solar USB Cell Phone Charger with Built-in 2,000 mAh Rechargeable Battery Pack for Apple iPhone (all generations) & Other Smart Phones
Converting virtually unlimited supply of solar power to much needed battery juice for your mobile devices such as an iPhone, android-based smart phones, Blackberry and many, many more compatible USB portable devices while you are on the go or there is a power outage or disaster strikes, the Instapark Mercury 4S is a light and compact USB solar charging system that easily fits in your purse, messenger bag or backpack. Measuring 7 ¼ X 4 ½ X 1 ¼ inches when folded and weighing less than 8 oz, it combines two solar panels totaling 4 watts and folds up into a pack about the same size as a paperback book, but only thinner and lighter.
With a built-in 2,000 mAh rechargeable Li-ion battery pack for power storage and current stabilizing, the Mercury 4S is sophisticatedly designed and engineered and comes with standard USB port for directly plugging in your cell phones including all generations of iPhones, MP3 players, USB battery/power packs and many other USB compatible mobile devices. If your cell phone comes with a USB charging cord to connect to a computer, then that’s all you will need to connect your phone to this USB solar charger, no other charging adapter needed.
Video Review of Instapark Mercury 4S