can any one help ,i am going to replace my batterys not sure if i have the correct ones in the boat ,can any one tell me wot i should be looking for needs to crank 496 motors ?

i pulled this from the mercruiser service manual
min. battery requirements
650cca/825mca/150ah
look into mercruiser service manual#30 it has alot of answer in it
hope thats what you are looking for

Thanks for the reply yes that is just wot i wanted re paul

Using an Interstate group 24 starting battery for 502's.