Well, that didn't age well.
How many of those are available retail in NZ? I've only seen (and got) red ones, accept for the parallel, which is yellow.
PS, I'm only considering lead technologies (lead acid, lead carbon). If you want lithium, then yeah, the requirements and redundancies increase substantially. I'm still to understand the benefits of lithium, esp as retrofits in boats the age of Aardvarks and mine. I'm sure the need for additional isolation is more easily justified in more complex installations you get on these new fandangelled boats. Next you'll be discussing coffee ma