The Nomad 13 delivers an ultra-compact yet powerful solar panel that enables you to charge your handheld devices directly from its USB and 12 Volt DC charging ports. Stay Charged Use the power of the sun to keep your GPS or smartphone charged Easy to Use Use solar power with USB or 12V devices Portable & Powerful Collect 13 Watts of power from the sun. Foldable, rugged design, and weather resistant.How to use: Open and remove protective file from solar cells (film may already have been removed) Position and angle panel towards the sun Plug your device into one of the charging portsTechnical Specifications:Usage - Charges from the following: Approx. Charge Time: Guide 10 Plus 3-5 hours Goal Zero Yeti 150 26-52 hours Sherpa 50 v2 8-16 hours 12V devices (satellite phone, GPS) 1-4 hours USB devices (cell phone, MP3 player) 1-4 hoursSolar Panel: Rated wattage 13W Cell Type Mono crystalline Open-circuit Voltage 20-22VPorts: USB port 5V, up to 1A (5W max) regulated Solar port (blue, 8mm) 14-22V, up to 0.9A (13W max) Mini solar port (2.5mm) 6.5V, up to 1.1A (7W max) regulatedGeneral: Weight: 1.6 lbs (0.72 kg) Dimensions: 10.5 x 9 x 1" (26.7 x 23 x 2.5 cm) Warranty: 12 Months Certifications: FCC, CE, ROHS Optimal Operating Temp: 32-104 F (0-40 C)