As a guide, this 100 amp hr battery is suitable for diesel engines up to 200 hp and outboards up to 115 hp
As a guide, this 86 amp hr battery is suitable for twin-cylinder types of diesel up to 18 hp and outboards up to 90 hp.
As a guide, this 75 amp hr battery is suitable for twin-cylinder diesel engines up to 12 hp and outboards up to 60 hp.
As a guide, this 110 amp hr battery is suitable for diesel engines up to 400 hp and large outboards