Feature: 1. Fast \u0026 Efficient Charging Polycrystalline cells provide this solar panel charger with enough power to charge 2 devices at the same time Smart charging technology recognizes the input needed for a connected device and distributes current output accordingly, cutting down on total charging time. 2. Wide Compatibility: Use this solar phone battery charger with any USB powered device with 5V DC input voltage. Compatible with iPhone Android Smartphones，and other electronic devices, including power banks of various capacity. It’s also the perfect backup in case of a power outage. 3. Portable \u0026 Lightweight: You can easily take this foldable solar panel charger with you on any outdoor adventure It weighs only 12.34oz. and is ultra-thin. It’s ideal to use while backpacking, hiking, camping, kayaking \u0026 other outdoor activities. 4. Weather-Proof \u0026 Durable: Don’t worry if those clouds could turn into rain – our solar panels are shielded with industrial-strength PET polymer and sewn into rugged polyester canvas, making it highly resistant to water and dust. 5. Friendly Service: If you have any other question,please connect us in time. Specification: Color: Black Maximum Power (Pmax): 20W Maximum Power Voltage (Vmp):18V Maximum Power Current (Imp): 2A Output: USB5V/18VDC Expand size: Approx. 48x18.5x0.3cm / 18.9x7.3x0.1in Folding size: Approx. 10.5x16.5x1.5cm / 4.1x6.5x0.6in Weight: 338g. Package List: 1 x Solar Panel