Jeff1 or the like can probably help me out with this one.
I understand what a split charge relay does but I've absolutely no idea how it does it or how TO do it and the ins and outs of ampage etc. Also its advantages and disadvantages.
Say I have an 85 amp hr leaisure battery and I want to set up a split charge system what do I need and how do I fit it? Also will I need to top up with a proper standalone charger?
I can wire a plug up but thats about it

Any advice would be greatly appreciated.