Looking for a mid-range charger controller to fit my particular situation. Needs to charge 48v banks of deep cycle lead acid batteries (it's what I have, ok? I know the downsides but severe budget) and in addition to solar input, take 120 or 240VAC input from a generator when needed because I can't add more panels or storage. So far my only other option is a regular charger controller and a AC - DC adjustable bench power supply. You would think with all the off-gridders that this would be an easy search but so far no.