The Suoer SON-20A-PRO is a high-efficiency, fully automatic smart battery charger engineered to safely charge and maintain both 12V and 24V lead-acid, AGM, and gel batteries. Driven by an intelligent 3-stage PWM (Pulse Width Modulation) charging system, it automatically manages the current and voltage to maximize battery lifespan and prevent overcharging. Key Technical Attributes •Smart 3-Phase Charging: Uses constant current, constant voltage, and floating charge cycles to smoothly revive deeply discharged batteries and maintain peak voltage without damage. •Auto-Detection: Smart sensors automatically identify whether a 12V or 24V battery is connected and apply the appropriate charging profile. •Real-Time LCD Screen: The digital interface displays live charging metrics, including current (Amps) and battery capacity level. •Multi-Layer Safety System: Built-in safeguards protect against reverse polarity (accidental swapping of positive and negative clips), short circuits, and overheating via an integrated cooling fan. •Zero-Spark Startup: The unit remains inactive until properly clamped to a functional battery, eliminating dangerous sparks during setup.