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General| Model | SunGuard |
|---|---|
| Rated Current | 4.5A |
| Maximum Output Current | 4.5A |
| Warranty | 5 years |
| Controller Type | PWM |
| Protection Features | Reverse polarity, short circuit |
Be very careful with lead-acid batteries; they generate explosive gases and short circuits draw thousands of amps.
Do not exceed voltage/current ratings or short circuit the solar array; this will damage the controller.
Utilizes MOSFETs for all power switching, offering a 100% solid state design with no mechanical relays.
Employs advanced series PWM charge control for fast, stable, and efficient constant voltage charging.
Adjusts constant voltage setpoint by -28 mV/°C relative to a 25°C reference for optimal performance.
Prevents battery discharge through the solar array at night, negating the need for a blocking diode.
Mount vertically with space for airflow. Avoid temperatures above 60°C and ensure water drainage.
Connect battery (black=neg, red=pos) and solar array (black=neg, yellow=pos) carefully, avoiding shorts.
Negative earth ground recommended for lightning protection; blocking diode not required for reverse current.
Check solar array rating, wire connections, dirt/corrosion, airflow, and water accumulation yearly.
Use a power supply, limit to 2A, set to 15V DC, and connect only one supply to the controller.
Check solar/battery voltages. If solar is ~20V and battery is low, controller may be damaged.
Account for temperature compensation, then check solar leads for battery voltage, indicating potential damage.
