DROK Solar Power Charge 3-35 to 1.2-30V DC-DC Voltage Converter Step Up/Down Sepic Regulator for RV Modules nature: Non-synchronous non-isolated automatic buck-boost (SEPIC) module Input voltage: DC 3-35V Output voltage: DC 1.25V-30V Output current: 2A (max) Power: 12W natural Cool ( input voltage higher than 10V), if install heat sink can reach 20W