Solar Battery Charge Controller Boost MPPT Voltage Adjustable Waterproof with Display 24‑85V 300W 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 battery All kinds of batteries (charging voltage between 24-85V) Suitable for photovoltaic panel parameters Open circuit voltage 18V-55V Maximum power voltage 17V-55V Charging module PV input power 200W/300W/400W PV input starting voltage 18V-55V PV input tracking voltage 17V-55V Output to battery voltage 24-85V (adjustable) Output to battery current Maximum 15A Load loss 0.35W Voltage regulation 1% Load regulation 1% Protection module Battery undervoltage protection Have Battery terminal short circuit protection Have Battery non reverse protection None Overcurrent Protection Have Temperature protection Have Protection class IP66 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 returns to normal after the short circuit removed. 3. INPUT UNDERVOLTAGE PROTECTION When the input voltage of the MPPT controller is lower than 15V, the MPPT will protectively shut down and automatically resumes operation after the input voltage is normal. 4.OUTPUT ACTIVATE FUNCTION SETTING When the MPPT controller leaves the factory, the output voltage activate function is on. That is, when the output terminal is suspended, the voltage output closed, and the output voltage shows "0" flashing. When battery access detected, the output automatically activated and the current charging voltage displayed. When the output activation function is not required in some specific applications, the user can press the [OK] key five times to turn off the activation function. At this time, the output voltage column will display "OPE" for 3 seconds, indicating that the operation is successful. In this way, the MPPT controller will output voltage directly after power on. If you need to restart the output activation function, press the [OK] key five times again to turn on the output activation function. At this time, the output voltage column will display "act" for 3 seconds, indicating that the operation is successful. After the output activation function is set, the system will save it automatically, and it will work according to the mode set last time when power on again.