[honest mark]

GOING to replace my (4) house batteries 550cca and my (4) starting batteries 800cca, any recomendations on what brand battery and do you think i should go to 1000cca for the starting batteries?? have a 660 hp cummin qsm11 engine?? thank you

[jclark003]

Unless you have changed the house load (e.g. added an inverter) or had problems starting the engines I would probably recommend replacing with similar type and capacity batteries. A higher CCA on the start bank won't hurt anything and also won't cost much more either so it's really up to you. If you change battery type you will also need to change the charging profile on regulator and charger. as for brand I'm not sure there is much difference. I've had good luck with interstate, AC Delco and NAPA.

[honest mark]

thanks for the input, greatly appreciated....

[CaptBrett]

GOING to replace my (4) house batteries 550cca and my (4) starting batteries 800cca, any recomendations on what brand battery and do you think i should go to 1000cca for the starting batteries?? have a 660 hp cummin qsm11 engine?? thank you

Marine batteries are available in four chemical types for different applications: flooded, gel, AGM (Absorbed Glass Mat) and Lithium. Which type you choose is based on your needs (deep cycle vs. starting), the capacity and lifespan you are looking for and your budget.

 I like AGM batteries.......