deep cycle batteries vs. cranking batteries

[capt.nick]

Went down to the marina to replace my deep cycle batteries for my 225F and the Yamaha tech told me that they were recommending cranking batteries instead of deep cycle batteries now. "Straight from Yamaha", he said. He said it had to do with the high amperage these motors put out when charging not being good for deep cycle batteries. Any truth to this?

[gomesie]

Check out this thread page 2 (Do I really need a deep cycle?) Good info.

[bonefish]

I have gone to all 3 gp27 deep cycle batteries, cranking batteries don't like to run livewells and fishfinders.