Features BUCK CONTROLLER The output voltage can be adjusted between 10-30V with a key step width of 0.1V. And the input is 17-55V. Also features a clear LCD display. High Efficiency The tracking efficiency of MPPT is up to 99%, allowing this MPPT solar charge controller to provide better control over charging ternary lithium batteries, lithium iron phosphate batteries, etc. Wide Application Using high quality cast aluminum for heat dissipation to ensure reliable and efficient operation in various working environments. Widely used in solar cars, solar monitoring, household solar panels, energy storage power supplies for motorhomes, etc. Automatic Heat Dissipation When the internal temperature of the MPPT controller exceeds 65 C or the charging current exceeds 30A, the MPPT controller will automatically turn on the fan. When the internal temperature of the MPPT controller drops below 45°C, the MPPT controller will automatically turn off the fan. Stable Operation Using high frequency switching MOSFETs with extremely low line resistance, which greatly improves the efficiency of the converter, lowers the temperature of the entire machine housing, and allows the smallest housing for higher power output. Specification: Item Type:MPPT Solar Charge Controller Material: cast aluminium alloy. Support battery: For ternary lithium battery, lithium iron phosphate battery. Maximum photovoltaic output power: 600 W Input voltage: 17-55V Output voltage: 10-30V Output Current: 40A @ 12V, 20A @ 24V Protection level: IP65. Noise: < 55 dB. Package list: 1 x MPPT solar charge controller. 1 x relay. 1 x user manual (English language not guaranteed). Note: 1. It is forbidden to connect the positive and negative poles reversed. Do not short connect the positive and negative poles or cables of the battery. 2. The controller is installed at an ambient temperature of -20°C ~ 60°C to ensure an optimal working environment. 3. Do not install the controller in a place exposed to direct sunlight. Package List 1 x MPPT Solar Charge Controller 1 x Relay 1 x User Manual