Solar Charge Controller with MPPT and PWM Options, Auto 12V/24V Overview This solar charge controller family includes MPPT models and a Blue PWM series to match small offgrid systems and vehicle battery charging needs. The MPPT controllers maximize solar panel output by tracking the maximum power point in real time, improving energy harvest by approximately 15 to 20 percent compared to conventional PWM controllers. Both controller types provide multistage charging and builtin protections to extend battery life and protect connected equipment. Key benefits Higher energy yield: MPPT tracking continuously optimizes panel output to deliver more charging current and better energy utilization compared to PWM controllers. Battery protection: Threestage charging and adjustable charge thresholds protect GEL, lead acid, and lithium batteries from undercharge and overcharge. Reliable operation: Builtin overheat, overcurrent, and shortcircuit protection plus low standby current reduce losses and risk. Flexible compatibility: Automatic 12V/24V system adaptation and multiple current ratings allow use in a range of small solar installations. MPPT Controller specifications System voltage: 12V and 24V automatic adaptation Rated charge current options: 10A, 20A, 30A Rated discharge current: 10A Max PV voltage input: 25V for 12V systems, 50V for 24V systems Float charge voltage: 14.4V, 14.2V, 14.6V; adjustable range 13.0V to 15.0V Low voltage disconnect (LVD): 10.7V; adjustable range 9.5V to 11.0V Discharge recovery voltage: 12.6V; adjustable range 11.5V to 13.0V Supported battery types: GEL, lead acid, lithium battery Standby current: less than 10 mA USB output: 5V, 2A max Working temperature: 36 to +60 C Size and weight: 170 x 95 x 40 mm, 250 g Blue PWM Controller specifications (PV series) Models: PV10A, PV20A, PV30V Rated charging current: PV10A 10A, PV20A 20A, PV30V 30A Rated discharge current: 10A for each model Max PV voltage: 25V for 12V systems, 50V for 24V systems USB output: 5V, 2A max Standby current: less than 10 mA Dimensions and weight: 133 x 70 x 35 mm, 132 g Working temperature: 0 to 60 C Performance and design highlights Industrialgrade main control chip for stable, accurate operation 16level AD sampling for precise measurement of temperature and charging current and realtime display of charging status AutoMPP tracking for MPPT models, with continuous detection during charging and bidirectional tracking for efficiency Fully featured threestage charging management to protect and extend battery life Multiple builtin protections including overheat protection, overcurrent protection, and shortcircuit protection Applications and use scenarios Recreational vehicles and camper vans: Keep house batteries charged from roof panels while parked or on the move, with options to match battery capacity and panel size. Small offgrid cabins and remote lighting: Efficiently manage solar charging for lighting, communication devices, and battery banks in locations without grid access. Marine and leisure craft: Maintain and protect boat batteries with reliable charging and multiple protections for small onboard solar systems. Model selection guidance Choose an MPPT model for maximum energy harvest when panel output and charging efficiency are priorities. Choose a PWM PV model for simpler, lowercost systems where panel voltage closely matches battery voltage. Match rated charge current to your battery capacity and expected solar array output for safe, efficient charging. This product line offers straightforward specifications, selectable MPPT or PWM control, and essential protections to support a wide range of small solar charging installations.