Almot wrote:
Without inverter the controller "sees" 465W at 30.4A. This is 15.3V. Is it possible to have over 15V on battery contacts?
Without the inverter/load, the controller would probably not be outputting 465w. It would put ~30A into the batteries (assuming it was at current limit) until the battery voltage hit the absorb setpoint. Assuming 14.4v for absorb, that would be ~432w, plus a little extra to compensate for inefficiency. At the transition to absorb, the controller is going to regulate voltage, and charging current will taper down.
Now, if you had the absorb setpoint set for 15.3v, then you could certainly see 465w...probably a little more if your panels were capable.