This 30A charge controller is compatible with 12V-24V systems. Fully 4-stage PWM charging (Boost, ABS, Equalization, Float), the power MOSFET is used as an electronic switch without mechanical switches, and equipped with industrial grade STM 8 microprocessor to extend the life of your battery < p>PV/Battery/Charge charge and discharge parameters with backlit LCD display. Dual USB can supply maximum 5V 2.5A to your electronic product. This solar controller is suitable for Lithium-ion/Lithium Iron Phosphate/Lead Acid batteries (OPEN, AGM, GEL) with multiple charge timers (charging must be DC). It is versatile and automatically detects day/night. To protect your battery life, the solar controller will automatically shut off once the battery voltage drops below 8V. PWM charge controller protection: Dual reverse current MOSFET/over temperature/under voltage discharge/short circuit/open circuit/overload/overcurrent protection.Safer for home, industry, commercial, etc. This controller is