Hi! I have Sumpro sump pump backup system which has 24V battery (two 12v deep cycle) batteries. System work fine as it is but if power is out for some time, batteries my run out. There is a DC input in the system for solar/wind. I need an advice what to buy (solar panel, controller) to make this work. See attached image for specs. DC inputs are specified as 24VDC, 20A max. I also attached full PDF brochure for more info.
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