Bere

Chris after your explanation and the fact that the supplier of my equipment supply no warranty if I use a used battery bank I have call Solarnoob and cancel our deal for buying the batteries.
On top of that my bakkie blew a turbo on Friday afternoon.
 

Thanks for the concern Chris.
I am willing take that chance on his word. 
 
 
 

Thanks for the replies. Yes panels will go up ontop off workshop. Batteries and inverter with back up generator will also be at workshop. 
I had test my voltage from workshop to home with the generator power and directly at the generator. Only 0.2 volts difference. I am willing to gamble with that.
This weekend I will buy the second bank Troyan batteries from Solarnoob.