PWM input voltage, Xantrex C40 test video
here is the Video link, the fluke is plugged directly into the Solar panel drop wiring before it enters the controller right above the panel input protection fuse, that i use for a disconnect just c...
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I think the panel has a higher voltage than the battery, but when you join them, the voltage at each end of the linking wires is the same except for voltage drop. (which will vary with the amps amount flowing)
