We recently purchased an off grid power system from Rainbow Power [ 16 panels 4 lithium batteries and all associated hardware ] and found the whole experience refreshingly free of the usual stress when buying a major item over the phone. All questions answered, all phone calls returned and sound advice given, and an assurance of free technical advice into the future. The components are all top quality and fully compatible. These guys know their stuff and I would recommend them. Ask for Andrew when making enquiries. 10 stars.
John P, NSW Mid North Coast

Approximate cost: $30000