I have an AIO 3500 watt 48 volt for sale. It has a MPPT voltage input limit of 145 VOC. I am currently using one of these right now but am switching to separates. This one is my spare, the one I am using has worked great, but it does not charge my battery type to a voltage level I need.( It's max absorption is 58.3volts) $260 shipped to your door lower 48 states. Reprinted manual included.