scottyb
Well-known member
1-12V battery with the same capacity as 2-6V batteries from the same series will weigh less and have less volume and require less cabling. The weight and volume reduction for the 12V comes from the simple fact there is less casing and fewer posts.
Here's their Specsheet. You are correct about volume. However, the only battery that has the capacity of 2 6V, weighs 123 lbs. This is why nearly all the high-end coaches come with up to 16 6V batteries instead of 8 12V. Nobody wants to handle a 123 lb battery. The 12V batteries begin to fall behind using the 25A or 75A rate, which is is a more practical in use comparison.