Griff,
However, "Temporary has an amazing habit of becoming permanent."
Why, I have no idea what you are talking about...
The other, which you may not have noticed, would be a higher amperage output for supplying the coach system circuits directly, bypassing the battery when 120/240VAC is available.
Yes, it has input of 4.5amp at 120vac an output of 30 amp at 12vdc. I must admit it does a good job of supplying the 12vdc coach circuits. It just falls down on battery charging, but to be fair, at the time it was made smart-chargers hadn't been invented yet.
