Discuss Which fuse rating to between starter and leisure battery? in the Auto Electrician Forum area at ElectriciansForums.net
===> So I would need to get a charge control unit instead of a split charge kit.Hi,with the outlay on all that equipment,i would seriously consider,investing in a charge control unit,current limited,instead of that 1950's relay.
Size it according to the leisure batteries,and,more importantly,the output of the alternator,taking in to account,the load which the vehicle may impose on it.
As is usually the case,you have several systems,all which can be adversely affected,by occurrences up or downstream. The system,as drawn,will have a mini-fit,the first time one of those four batteries,are flat.