Features 1Smart Charging: High efficiency MPPT real time tracking function suitable for solar panels of different voltage. 2Better Designs: Adopting efficient synchronous rectifier circuit structure to ensures quick and stable charging. 3Great Matching: 10-30V adjustable output voltage supports various batteries enables a wide range of application. 4Working Safety: With short circuit protection over temperature protection under voltage protection for safety. 5Reliable Using: Equipped with LED screen to display volt and current also waterproof dust proof and shock proof. Specification Item Type: Solar Charge ControllerMaterial: AluminumProduct Size: Approx. 120 x 80 x 40mm / 4.72 x 3.15 x 1.57inEfficiency: 95%Noise: <55dBApplication: For solar street light controllers solar chargers solar electric tricycles solar toy cars household solar panels solar monitoring and other usage scenarios. Weight: Approx. 482 g / 17 oz Applicable Batteries All kinds of batteries with charging voltage between 10-30V. Applicable PV Panel Parameters Open Circuit Voltage 18V-55V Maximum Power Voltage 17V-55V Charging Module PV Input Starting Voltage 18V-55V PV Input Tracking Voltage 17V-55V Output to Battery Voltage 10-30V adjustable. Output to Battery Current Maximum. 25A Load Loss 0.35W Voltage Regulation 1% Load Regulation 1% Protection Module Battery Under Voltage Protection Yes Battery Terminal Short Circuit Protection Yes Battery Anti Reverse Protection No Over Current Protection Yes Temperature Protection Yes Protection Class IP66 Working Temperature -40~+65 1. Overheating Protection: When the internal temperature of the MPPT controller exceeds 100 C the MPPT controller will reduce the output power. If the internal temperature continues to rise to 110 the MPPT controller will automatically turn off the output. When the internal temperature of the MPPT controller is lower than 85 the MPPT controller will automatically resume operation.2. Short Circuit Protection: When an unexpected short circuit occurs in the MPPT controller output the MPPT controller automatically turns off the output and automatically returns to normal after the short circuit removed. Package List 1 x Solar Charge Controller1 x English User Manual Note Check Before Installation:1. Check whether the appearance is in good condition before installation; 2. Check the label on the MPPT controller housing to verify that the performance of the specification MPTT controller matches the device; 3. The MPPT controller should be fixed on an iron or metal bracket to avoid the vibration of the machine due to instability; 4. The MPPT controller should leave a certain space around the casing for installation; 5. The output and input wires should be as short as possible to avoid excessive energy consumption during transmission; 6. There is high voltage and high current in the machine and non professionals are not allowed to disassemble it; 7. Input and output terminals should be reliable and not loose to avoid heating at the connection point. The product is not a smooth model the controller is produced directly from raw materials without polishing.