2013 merc 250 Pro Xs hanging on a 2009 Z8. I’m running two 10 inch hummingbird Core units and 998 also. Two Power Pole’s, radio, live wells, jack plate etc. all hooked to the starter battery. 36 V TM running on 3 optima blue tops that are juat a few years old. My starter battery is also a blue top that was new October 2015. Its toast. I honestly haven’t used the boat much since fall of 2016. Before I put the new optima blue tops in I also had four blue tops. Since putting all the extra electronics and power poles on it running low miles during the day on a tournament etc. etc. I’ve always struggled with my starter battery.
I’m Thinking about adding a new battery and the designated one just for all my hook ups and the starter battery will be standalone...a 5 battery set up. I think they like to call the 5th one a “house battery” Still researching that and checking to see if I have enough room. So aside from everybody’s personal battery brand preference tell me what I need to put a starter battery in now if I was going to keep it everything hooked up to that battery and stay with A four battery system. Thanks in advance guys