>>
>> Car batteries have no chance of surviving such an application, as you say,

>That may be news to all the people with big V-8 diesel trucks and cars,
>which often are designed to use two starting batteries in parallel.

And they come from the factory with a 'matched' pair of batteries. When
they replace them, they replace them both at the same time. The life of
the batteries is shortened by using them in parallel, but if you can
afford one of those beast machines, you don't care about it.....

Everyone has a comment, but how about answering the original posters
questions instead of splitting hairs on details from someone who has
offered an answer to the question?

John