Portable Polysilicon USB Solar Panel for 5V Devices This compact polysilicon solar panel converts sunlight into a stable 5V USB output for charging small electronic devices and 5V batteries. Designed for portability and everyday use, it delivers efficient power even under weak light conditions. Key benefits conversion efficiency and stable 2W output for reliable charging. Performs well in weak light, extending useful charging time in overcast conditions. Lightweight and compact at 55 g and approximately 157 x 94 mm for easy carrying. Durable, flexible polysilicon construction for long service life and repeated use. Built in 50 cm USB cable provides convenient connectivity to phones and other USB devices. Simple plug and play USB output compatible with most 5V USB chargers and power banks. Operates across a broad temperature range from 0 to 60 C for varied outdoor use. Specifications Cell material: Polysilicon Working voltage: 5V Output power: 2W Output interface: USB Size: Approx. 157 x 94 mm (6.18 x 3.70 in) Cable length: 50 cm (19.69 in) Net weight: 55 g Operating temperature: 0 to 60 C Suitable for charging 5V batteries and USB devices Practical use scenarios Travel and commuting: Keep the panel in a backpack to up a phone or power bank while outdoors or on the move. Camping and hiking: Provide a lightweight, compact power source for navigation devices, small lights, and emergency phone charging. Emergency backup: Store with emergency supplies to recharge a phone or USB power bank during a power outage. What you get 1 x Solar Panel Notes Allow up to 1 mm error due to manual measurement. Product color may vary slightly from images due to monitor differences.