Features: Imported high frequency low conduction internal resistance double MOS tube is adopted. 10A high current double diode. Adopt advanced MPPT solar maximum power tracking technology. Ultra-high efficiency MPPT supports solar high current charging within 8-28V and 100W. The output voltage can be adjusted arbitrarily, and CC-CW automatic control. Complete charging management of battery. 300kHz PWM switching frequency. Constant current charging current is set by external resistance (preset 5000mA/2000mA). Trickle charge the deep discharge battery. Dual indication of charging state and charging end state. Low power soft start function. Specifications: Material: PCB PWM Switching Frequency: 300kHz Item Size: 58 * 38 * 24mm / 2.28 * 1.50 * 0.94in Item Weight: 38g / 1.39oz Package Weight: 39g / 1.40oz Package Size: 11 * 7 * 2.5cm / 4.33 * 2.76 * 0.98in Packing List: 1 * Module