1、Using the latest MPPT algorithm to track the maximum power point of the solar panel in real time, the charging efficiency is up to 98.5%, and the tracking accuracy is 99.73%. 2、Three-stage charging, constant current, constant voltage and floating charge can effectively protect the battery and improve its service life. 3、It can input at high voltage. Low light can generate electricity, so the battery can be charged in rainy days. 4、The charging parameters can be set according to different batteries and different voltages to perfect the protection of the battery and extend the battery life. 5、LCD operation screen, switching between Chinese and English, it is simple and practical to operate Features: 1. Using the latest MPPT algorithm to track the maximum power point of the solar panel in real time, the charging efficiency is up to 98.5%, and the tracking accuracy is 99.73%. 4. The charging parameters can be set according to different batteries and different voltages to perfect the protection of the battery and extend the battery life. 5. LCD operation screen, switching between Chinese and English, it is simple and practical to operate   Specification: Condition: 100% Brand new Model: TYC-30IR Rated Current: 30A Maximum Protection Current: 32A Maximum PV Input Power: 420W, 840W, 1650W PV Input Overvoltage Protection Point: DC175V PV Input Overvoltage Recovery Point: DC170V Charging Method: 3 Stages: constant current (MPPT), balanced charging, floating charging System type: 12/24 / 48V 20-60A automatic identification Static Power Consumption: 2W Machine Efficiency: 98.00% Photovoltaic Module Utilization: 99.97% Temperature Compensation: 3mV℃/ 2V Temperature Protection: + 85℃ Temperature Rise Protection: +80℃ or more can reduce power output Working Temperature: -10 - + 45℃ Humidity: Relative humidity 0~90% (non-condensing) Height: 0~3000m Safety Level: CE, PSE, FCC, EMC Protection Level: IP21 Weight: Approx. 2406g / 84.9oz Size: As picture show   Package List: 1 x Solar Charge Controller 1 x Temperature Sensor 1 x English User Manual