Description Item Type: Solar Battery Charge Controller Product Size: Approx. 120 x 80 x 40mm / 4.72 x 3.15 x 1.57in Efficiency: 95% Noise: 55dB Uses: Solar street light controllers, solar chargers, solar electric bicycle, solar electric tricycles, solar toy cars, household solar panels, solar monitoring and other usage scenarios Weight: 485 g / 17.1 oz(approx.) Applicable batteryAll kinds of batteries (charging voltage between 24-85V) Suitable for photovoltaic panel parametersOpen circuit voltage18V-55V Maximum power voltage17V-55V Charging modulePV input power200W/300W/400W PV input starting voltage18V-55V PV input tracking voltage17V-55V Output to battery voltage24-85V (adjustable) Output to battery currentMaximum 15A Load loss0.35W Voltage regulation1% Load regulation1% Protection moduleBattery undervoltage protectionHave Battery terminal short circuit protectionHave Battery non reverse protectionNone Overcurrent ProtectionHave Temperature protectionHave Protection classIP66 Operating temperature-40~+65 1.OVERHEATING PROTECTION When the internal temperature of the MPPT controller exceeds 100, 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