I know that this question has been asked before, but I'm hoping that Victron may have an answer given that it has been asked for at least two years.
I have Orion-Tr Smart 12/12 18A isolated charger. Despite the fact that I have recently replaced my 7-way connector on my tow vehicle, and upgraded the wiring on my short trailer to 8AWG, I am limited by the 10AWG OEM wiring in my tow vehicle. Whenever I connect my lithium batteries, the Orion consumes around 25A in order to produce 13.6V at 19.6A.This large current causes the voltage at the input to the Orion to drop to 12.1V, which is well below the default engine shutdown voltage of 13.1V. I believe that much of the voltage drop is in the truck's 10AWG wiring, and/or the 7-way connector (even though the connector is new). In order to get something to work in what does not seem to be a very demanding scenario, I have to disable the engine shutdown feature or decrease the shutdown voltage threshold. I also have to worry about blowing my 30A fuse.
It seems strange that the Orion consumes so much current that it causes a big enough voltage drop to shut itself off. It would be great to have a feature (such as in the Renogy DCDC converter) that allows one to configure the charger to provide only half of the nominal current output. This would result in a lower voltage drop which would not trigger the engine shutdown feature. Sure, the charger is only charging at half the rate... but at least it is on!
If the answer is to bypass the OEM circuitry with heavier gauge wire, Anderson connectors, and auxilliary fuses, then you should mention this in your marketing material. Why design something that can't be used by tow vehicles with OEM equipment?
