I agree with you that solving the parasitic loss problem is likely not easy but I think it is worth contacting a few companies to see if they can help solve it.
I think you mentioned your van will have a touch screen display etc. so I'm sure you want to keep all that.
My guess/assumption is that stacking the 200ah x 8 modules is what magnifies the parasitic losses so greatly. It's a multiple of 8 . It would be so beneficial if that could be reduced to a multiple of 1 or 2 or 4 for example.
Questions I'd ask:
Is there any reason that you can't have 2 x 800ah modules or 1 x 1600ah module? Is it because RT only has one size battery box?
The charging system doesn't seem to change with the much larger battery bank as you already know - http://www.classbforum.com/forums/f4...html#post58381
Maybe things have improved since I last read anything to do with the RT with larger lithium battery banks.
This post was from 1 year ago - the RV has 600 W solar and 1600 amp-hrs of Ecotrek lithium batteries: https://www.facebook.com/groups/road...19944704831179
Direct quote from the post:
But leaving all 8 battery banks on drains the power in about 48 hours.
That owner discovered:
I found that 600 W of solar is sufficient to keep one bank charged, but not two.
So, if you almost double your solar from 600w to 1100w then, according to that post, you'd be able to keep 1/4 of your battery modules (only two out of eight charged. It sounds like you
have to actively manage the system deciding which modules to charge etc.
Obviously, what I linked to is old news (I don't get on FB often) - I'm really hoping to hear that things will be much better in your yet-to-be-built RT.