1、FAST CHARGING: Dual USB, Type C are supported by fast charging protocols, so that cell phones, rechargeable batteries faster charging. 2、DC5521 INTERFACE: Solar charge controller with dc5521 interface, direct access to the controller, eliminating wiring troubles. 3、PROTECTION: Solar controller built in charge and discharge safety hours accumulation, battery reverse discharge, battery undervoltage, battery reverse connection, overload, short circuit protection. 4、UNIVERSAL DESIGN: 12/24V Li ion battery pack are universal, which can be automatically identified and manually adjusted. 5、PHOTOVOLTAIC PANEL: Solar panel battery regulator can use photovoltaic panel to drive solar controller directly. Item Type: Solar Charge Controller Material: ABS USB Output: 5V Output Mode: USB Working Temperature: ‑35℃ to +60℃ Scope of Application: Solar Panels, Etc. Gross Weight: 120g/4.2oz 1 x Solar Charge Controller 1 x Instruction Manual