Bioenno Power BSP-28 28 Watt Foldable Solar Panel Bioenno Power Fast Charging Technology: Automatically identify and detect your 5VDC device, delivering high current, up to 3A. Anti-scratch technology Extremely high solar conversion efficiency Dual Outputs: Port-A. Standard USB output fits 5V devices; Port-B. 15 VDC DC Plug Output Simple Design: Convenient eyeholes enable easy attachment to backpacks while hiking; Portable and frame design fit for outdoor and indoor use