I complained to GivEnergy when my 9.5KwH GivBat continued to discharge about 300W overnight to my house, despite being set to hold it's charge, and Matt Butler at GivEnergy replied "As far as i am aware you will get minimal wattage from the battery still". He offered no solution, implying it wasn't worth worrying about. I asked him to escalate the issue because using up 300W overnight is a significant chuck of my usable charge kind off defeats the object of having a battery,. It could surely be sorted out with a software fix, and he replied "I will pass this concern up to the team."
So I suspect it will remain a defect in their product we are expected to live with. But ma\ybe GivEnergy will give you a more helpful reply, in which case let me know.