Thanks Daz,
Was gonna answer my own question on here; swapped the two wires over in the white plug, problem solved, they were wrong way round that's why they were flashing

I know you have a freedom trolley; I took battery off as it had, had it and connected a smaller golf trolley battery i got off amazon, 22 amp 12v.
Half the size and connected those white male female electrical connectors from adepta.
Now to charge battery I unplug from varistream controller, pull battery out from trolley as smaller and lighter and bring that indoors, leave trolley in van.
Just saying as i know your in a flat, my place is small also.
Thanks Daz.
Lee