iSolar Portable Folding Solar Kit 12W Packing Size : 26.5 x 21 x 5 cm (10.4 x 8.3 x 2 in) Folded Panel - Front Size : 24 x 20 x 1.5 cm (9.5 x 7.8 x 0.6 in) Weight : 0.6 Kg (1.33 lb) Folded Panel - Back 2 Pockets Lithium Battery Pocket Other Accessories Pocket Open Panel Size:61 x 21.5 x 0.4 cm (24 x 8.5 x 0.2 in) Accessories: USB Cable AC Adapter Car lighter plug Solar Charger 2,700 mAh Lithium Battery Accessories: 5,400 mAh Lithium Battery Accessories: Solar Charger Size : 6.4 x 3.5 x 1.5 cm (2.5 x 1.4 x 0.6 in) Weight : 20 gram (0.05 lb) Accessories: Lithium Battery: 2,700 mAh Size : 150 x 64 x 15 mm Weight : 125 gram Accessories: Lithium Battery: 5,400 mAh Size : 150 x 64 x 15 mm Weight : 180 gram 12W Folded panel Folded Panel Size : 24 x 20 x 1.5 cm (9.5 x 7.8 x 0.6 in) Weight : 0.6 Kg (1.33 lb) Solar Charger: Best Performance for charging Solar charger is stabilized by 2 elastic loops when panel open Solar charger is stabilized by 2 elastic loops when panel open Charging 2 cellphones under sunshine Charging 2 cellphones under sunshine Solar Charger Testing Fully charged iPhone4 within 50 minutes ! Date : 2:30 PM, Dec 02 , 2011 Place : Shenzhen, China 12W Solar Panel Voltage : 5.13 V Ampere Ampere : 1.3 Ampere Voltage V x A = Watt-Hour iPhone4 5.13 V x 1.30 A = 6.67 Wh (Watt-Hour) Battery Capacity Comparison Product Battery Capacity iPhone4 5.25 Wh HTC (Sensation) 5.6 Wh Samsung (i9100 Galaxy S) 6.5 Wh Solar Charger iPad 5.25 Wh ÷ 6.67 Wh = 0.79 Hour ( 47.4 minutes) Solar Charger Testing The above picture shows 6.67 watt charge into battery per hour by using 12W iSolar panel. The data shows charging efficiency in winter’s afternoon, as you can see the performance is good enough. Therefore, in summer’s noon time, the charging efficiency will be much better. It means fully charged iPhone4 will be less than 40 minutes. Charges lithium battery under sunshine Charging battery (2,700mAh) via car lighter plug during driving Car lighter plug Charging battery (5,400mAh) via car lighter plug during driving Car lighter plug Charging battery (2,700mAh) while car parked Charging battery (5,400mAh) while car parked Charging battery during driving under sunshine Power Bank (Lithium Battery) charges 2 cellphones at the same time Power Bank (Lithium Battery) charges iPhone & table lamp at the same time Power Bank (Lithium Battery) charges iPhone & iPad at the same time