Thank you, I'm sorta backwards when it comes to this. I have severe dislexia.
I must ask, how many batteries of this great size must I need to do this at a healthy rate?
I have a deep cycle marine battery which is rated at 725 cranking Amps. The label also says 115 A/hr @ 20 hr. So that means you can safely get just over five Amps out of it on an ongoing basis. For 600 Watts, you would need ten of these large, heavy batteries.