Dual USB ports provide flexible charging for two devices at the same time, reducing wait times and expanding charging options. Large LCD display shows charge and discharge parameters clearly, making monitoring and adjustments quick and easy. Complete 3stage PWM charging management delivers efficient, controlled charging to protect and optimize battery performance. Builtin protections include nearcharge protection, shortcircuit protection, opencircuit protection, and reverse connection protection; all are selfrecovering and will not damage the controller. Use scenarios Offgrid solar or portable charging stations: power two USB devices while monitoring and adjusting charge/discharge settings on the LCD, with reliable protection during outdoor or remote use. Bench testing and development: configure adjustable charge and discharge parameters for experimentation or prototype work while relying on multiple protections to safeguard equipment and the controller. Remote or mobile power supply: in a vehicle, boat, RV, or remote location, provide two USB outputs from a compact unit with safe, selfrecovering protections and clear realtime feedback on the LCD.