Review on Travel Ready: ECO-WORTHY 120W Foldable Solar Panel Kit for Portable Generator Power Station. Includes USB Controller to Efficiently Charge 12V Battery. Perfect for RV, Camping, Travel Trailer, Power Bank, Emergency Power by Randy Salgado

Pros: Small size for rated output Includes 12V and USB 5V solar power regulator Ready to use MC4 connectors for solar charging Includes assortment of connectors Cons: No, extra wires required, once and small 12V Batteries are available from Revain. The 12V and 5V charging function requires a 12V battery. I bought a small Revain 12v 6000mah battery to enable this feature. Any 12V battery will do, but this small battery fits in an eco-friendly bag for easy portability. I was then able to quickly charge my iPhone and iPad simultaneously using the solar panel. I then successfully recharged my selection of lithium ion batteries, primarily using the connectors that came with them. Eco-Worthy with three other 100W panels with MC4 connectors already installed in a daisy chain arrangement. I appreciate the small size and weight of the eco-friendly 120-watt solar panel. It's smaller and more powerful than the competing 100W panel. Thank you for creating such a wonderful product.