Key Features of Waterproof Portable Foldable 21W Solar Panel Charger
Ultra-durable ETFE material enhances sunlight absorption while resisting scratches and extreme weather conditions. High-efficiency monocrystalline solar cells deliver 21W max output with 23.5% conversion rate for rapid charging. Features dual USB ports (5V/2.4A each) to simultaneously power smartphones, tablets, or GPS devices. Integrated smart IC chip automatically adjusts current to prevent overcharging and short circuits. Compact foldable design (unfolded: 27.5 x 17.7 inches; folded: 7.5 x 6.3 inches) with reinforced nylon carrying handles for effortless transport. IPX4 waterproof rating ensures reliable performance in rain, snow, or humid environments. Ideal for off-grid adventures: hiking, camping, RV trips, emergency preparedness, and marine activities. Includes 4 sturdy metal grommets for easy attachment to backpacks or tents. Industry-leading 12-month warranty with bulk discounts available. Direct factory pricing guarantees unbeatable value for wholesalers and outdoor retailers.