This system charges from 240V, tug alternator or solar panels automatically. Especially valuable is its ability to accept voltage drop from the alternator to 'van wiring and still fully charge the van batteries. Larger units and 24V versions are 'in the pipeline'.
I have no conection or commercial interest in the copany, but have purchased product from them in the past. They maufacture in Adelaide and have an excellent reputation for quality and service.
I've come to the conclusion that anything produced by redarc is extremely good, I have a couple of their products, including the one mentioned by you, I have had no problems with them and would push their barrow anytime