Originally Posted by
mad_jock
Seems a bit daft not having a couple of kg's of nicads as a backup for the standby AH.
I suppose if you were that bothered, you could swap the AI for one with integrated battery backup - they are fairly common now. With all the redundancy offered by dual everything else, it's probably not necessary?
What are the main bat's, nicads or lead acid?
All the batteries are sealed lead acid.
Personally with that set up I would be wanting one alt that was half lifed and one new both from different batches.
The two alternators are different. They have different output ratings, as well as the fact that one is belt driven and the other direct drive. I guess given all that, they are also unlikely to be from the same batch. I didn't think alternators were lifed components anyway? Don't you just check the brush assemblies at the annual?
Unfortunately there isn't a easy solution to the fact that the alternators both have a common earth which means if one goes if can back spike the earth and take the other one out.
Well ultimately, everything has a common earth doesn't it!