We havnt got any of this stuff on our van so I suppose I shouldn't reply but one thing that hits me in your post, is are you relieing on one bloke to ring you, what happens if he goes bankrupt or ill or something.
I thought it was a serious question really, look at all the motorhomes that are standing doing nothing all day, and the price of gas and mains going through the roof shame we can't find a way of getting it together.
Well,had an 100 w solar for years, and two 100w hab batteries and another 100w starter battery.
The panel kept these up ok but with putting in a compressor fridge I thought I would up the solar to another 100w , but find by 10 o clock in a morning on sunny days we are all full up and the solar...
They sometimes need recodeing after the batteries are removed but afraid I don't know how it works on yours, sometimes something simple like pointing at the reciever and switching on and off for so many seconds but they vary.