Hi Hive account@smithlabs, listen thanks a lot for your comment, I took a break from social media for a while so I am only seeing this now. Thanks! I developed the system a bit further so I'm planning on posting about that in the next few days.

You know what you made me realise with this post, that the draw doesn't stop at whatever the rating is at 1 hour! I just made a mental error that it would at most give 7 amps, not that that would ramp up massively to meet the draw. So thanks.