How to disconnect battery

Hi I have attached the battery to the board but am
Having great difficulty putting the screws in to hold the battery in place. So I tried to disconnect the battery hoping that it might be easier to screw it in if it isn’t attached but I can’t pull them apart. Any advice appreciated as I can’t get this battery/icu off

B

Check FB jetsurf spairs and repairs page maybe they can help. Usually it unplugs as a whole connector with no problem, maybe it’ stuck, not sure why