My 25 year old 40 amp charge controller died. I needed a replacement to keep one of my solar panel set working. I bought EPEVER 40A MPPT Solar Charge Controller 12V 24V Auto, for all of the features it has. Installation was easy, it excepted my #8 solar wires no problem. The remote readout has plenty of cord to place in a highly visible area. Programing was a little tough it took me a while to fully understand the instructions. The factory settings worked just fine initially but i wanted to fine tune the Controller for my batteries. I like the remote, it shows panel voltage and amps and the MPPT output to my batteries, the panel amps are boosted with MPPT. which is always visible on the Controller's remote.