Description: The unique solar phone charger uses fast charging technology that detects the device you want to charge and delivers the appropriate current to ensure a powerful and stable charge. Portable and foldable for hiking, camping and any outdoor activity or just whenever you find yourself in a place without enough power. Features: [Compact Lightweight]The foldable solar charger is small and light enough to fit in any camping backpack, hiking backpack or emergency kit. [Efficiency Stable USB Port] Charging efficiency up to 5V/2.4A max, with a built-in voltage stabilizer, automatically adjust current and auto-restart function, no need to reconnect when going under shade or in cloudy weather. [High Energy Conversion] Sunpower high efficiency monocrystalline silicon solar panel provides high energy conversion rate over 20.5%. [Wide Compatibility] You can use this solar powered charger for any 5V electronic devices like batteries, cell phones, tablets, emergency lights, etc., compatible with most brands of phones in the market. [High Durability] Weve only used the best and strongest materials to ensure long-lasting durability. With reinforced holes, its easy to hang where you need it, like on your backpack. Specifications: Power: 15W (Type 1); 30W (type2) (optional) Color: Black Material: Monocrystalline silicon Output interface: Dual USB (15W), Dual USB/DC (with charging fast) Output voltage: 5V (15W), 5V/12V (30W) Output current: 0-3A (15W) ), 3A (30W) Solar energy conversion rate:20.5% Waterproof: IPX6 Occasion: outdoor, travel, camping Unfolded size: 55*17.5cm/21.65*6.88inch(15W);55*38.5cm/21.65*15.15inch(30W) Folded size: 17.5 x 18 x 0.5 cm/6.88 x 7.08 x 0.19 inch (15W); 19 x 18.5 x 1.5cm / 7.48 x 7.28 x 0.59inch (30W) Package size: 21.5 x 19.5 x 4.2cm / 8, 46 x 7.67 x 1.65 inch Package Weight: 450g/0.99lb (15W); 900g/1.98lb (30W) Package List: 1 * Foldable Solar Charger with USB Port 1 * 7PCS Carabiner Charging Description: Power storage function is not supported, only support device charging under sunlight. Different charging time and current depend on different light intensity, working with power bank to achieve better effect.