21W Waterproof Portable Solar Panel – 28W Foldable Solar Charger
Ultra-lightweight yet durable ETFE-laminated solar cells deliver high-efficiency 21W output, expandable to 28W with optimal sunlight. Military-grade waterproof coating (IPX4 rated) ensures reliability in rain, snow, or splashes. Features dual smart USB ports (5V/2.4A each) with auto-detection technology for simultaneous fast charging of phones, power banks, or GPS devices. Reinforced stitching and rugged Oxford fabric withstand extreme outdoor use. Ideal for off-grid adventures: hiking, camping, RV trips, or emergency power backup. Compact foldable design (11.8 x 6.3 inches folded) includes a carabiner for easy attachment to backpacks or tents. Direct wholesale pricing – bulk orders available for resellers and outdoor retailers. Ships globally with guaranteed lowest price.