Having recalibrated the battery the charger1 was used and 3 x discharge 1 x charge programme was selected.
It took a long time to run through the programme but late last night the battery was reading full and showing 90%.
I disconnected the charger and then used the normal charge programme and it indicated it was again charging.
This mooring the battery indicator is lighting correctly and showing 100%
Looks like after recalibration you have to follow the instructions and fully discharge/recharge the battery.
Not sure how you would do this without the charger1 but all is now working correctly so Im a happy boy again.