This kind MPPT charge controller’s amps is from 20a to 60a, with 12v/24v/48v auto working. It has high efficienty MPPT controller algorithm, which is above 99.5%, and its whole machine conversion efficiency is up to 98%. With 12v/24v/36v/48v system automatic recognition, users can use it in Different system conveniently. Its maximum pv input voltage is 20A/ 30A/ 40A(130V) and 50A/60A(150V), with discharge mode: ON/OFF mode, PV voltage control mode, Time control mode, Time control, PV&Time control mode. By using RS485 communication, we can offer communication protocol alsa. It is convenient for user's imtegration management. Most information could be provide by LCD. We will provide 2 years warranty. Meanwhile 3~10 years extended warranty service also can be provided.