Youll probably get a similar return of the charging via an 80w panel as from the Setec via 12v.Thank you CrustyCon, ( @Crusty181 ) so I would be better off sticking 80watts of solar on the ute's roof ????? that way it would keep the aux battery charged up and could do away with a wire from the car battery and run the van all off the aux.........didn't do an inventory of what would be drawing from the aux just thought the Ctek sounded good so go with that but you and Bigcol have made me see the light..!!!!.....broke anyway so by the time the Treasurer hands out the coin there will be a new invention to get excited about.
Life was so much easier with a tilly lamp, wine and rum since you couldn't keep the beer cold drink it all the first day before the ice melted..........my old Nissan hand a crank so if you killed the battery you just wound it up.
Bugger it ....... its happy Honda time, of the 2kW kind