It has been an interesting situation that many marine shops stock tinned copper wires, but only stock untinned battery cable.......& believe me I have heard some lame excuses.
I hapened to look in the whitworths catalogue.....and yes it said tinned battery cable......and yes....they actulay have it in their stores in two sizes and in black and red......and will wonders never cease they have lugs to match.......and the price is no dearer than the untinned stuff offered by bias and some others.
those who have the ability to buy rolls a have been able to get the good stuff... but mere mortals buying cut lengths have had some difficulty.
they are supplying tycab brand...... which is a reputable australian manufacturer.
All we need if for them to start stocking lighter double insulated twinn in tinned...so we can have an appropriate cable to wire our LED lightng with.
cheers