I have just added an xtra 60 ah to my batteries. Anyone know how to recalibrate the BEP. Can't find a manual

Freeman,
Hold the two buttons on the top right for 3 seconds and it should open a menu, I think you then use bottom button to scroll through
and select which setting you need to change, If I remember correctly I think this is the procedure.
I have a manual on my boat but wont be there for a few days,
On a side note my display is playing up when I try to go into the menu the screen goes black?? Anyone else had this problem?
then by pressing centre button it eventually comes back to volts/ amp display.

Thanks crew, got hold of a manual.