Flexible Design: The 18W 5V flexible panel can be bent, suitable for more installation surfaces. Flexible solar panel offers convenience and wide application possibilities Dual USB Output: Equipped with dual USB ports, this portable solar panel is easy and convenient to use. High Transfer Efficiency: This solar panel charger features polycrystalline silicon material, ensuring efficient power conversion Stable Charger: The DC5521 port of the solar controller charges a 12V lead-acid battery for greater stability. 12V lead-acid battery charging status indicator light: red light is charging, green light fully charged. Connect the DC5521 port between multiple solar panels to achieve parallel increase in output power Wide compatibility: Built-in voltage regulator circuit, supports high current fast charging. Suitable for various devices such as mobile phones, power banks, 12V batteries, mobile power stations, etc Specification: Solar cell material: polycrystalline silicon Solar panel power: 18W USB output: 5V 2A Max Solar controller DC output: 12V 1A Max Working voltage of solar panel: 18V Open circuit voltage of solar panel: 21.6V Solar panel packaging material: PET+EVA Solar panel size: 415 * 340 * 30mm