titch wrote:Disagree Bonger on the comment.
why not ask someone who knows these things such as http://www.springers.com.au who are the 12 volt and solar specialists.
Much better to ask those that actually do it, rather than those, who make money out of those that do it.
My own opinion of course and have had no dealings with Springers.
$299 3way from Aldi or Supercheap may be the way
I'm not saying buy something off them, it just sometimes pays to get more info, I have dealt with springers in the past regarding a dual battery setup and they never pressured me to buy, they were just happy to give the advice of what my options were.
in any case, each to there own as to which way they want to go with things. I just thought that there may be other options before having to buy new instead of accomodating with what you have.