Powerful 21W/28W Waterproof Solar Charger with USB Port

High-efficiency monocrystalline solar panels ensure fast charging under direct sunlight, compatible with most USB-powered devices including smartphones, tablets, and power banks. Durable IPX4 waterproof rating protects against rain and splashes, ideal for outdoor adventures like camping, hiking, or emergency power backup.

Premium ABS+PC construction with anti-slip silicone edges enhances durability and portability. Ultra-lightweight design (only 300g) includes a carabiner clip for easy attachment to backpacks or tents. Built-in smart chip prevents overcharging, overheating, and short circuits.

Perfect for off-grid travel, disaster preparedness kits, or daily eco-friendly charging. Ships in bulk quantities at wholesale prices, exclusively for resellers and large-scale procurement.