Location: 31 | kap - 11/9/2018 8:32 PM
walleye and bass guys are running 5 batteries but they are running their live wells all day also
I use 4 batteries but run a deep cycle (same as my trolling motor batteries) for starting and electronics
as mentioned get the big ones size 31
I
…muskie guys are running 5 batteries too! IMHO, 2 group 31 deep cycle batteries are going to be mandatory if you're running 3-12” screens. I'm on my second boat with that type configuration, and before that was running 3-10” screens on 2 group 31s.
Further; it's pretty common to have a battery isolator so the electronics/live well/ect cannot discharge the primary starting battery these days. However, I've been running the 2 house (starting) batteries hooked-up in series with only a few minor issues without an isolator, so I have just stayed with that configuration.
In 2017 I had a pesky intermittent electronics brownout when I would start my big motor, and although a battery isolator may have helped to solve the problem, my remedy was to simply not shut off the kicker motor until after I started the big motor… and then just replaced the entire boat at the end of the year. 
I went a little overboard with heavier wires etc. while rigging the electronics in the new boat in the winter of 2017/8, and it performed almost flawlessly.
Edited by Jerry Newman 11/12/2018 11:06 AM
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