Mike,
I have batteries on Rum Runner. Both are side by side under the v berth. I  
have all the running lights on one battery and everything else on the other.  
Eventually I would want to have everything go to both batteries using a switch. 
 My stereo is the biggest drain on juice, that's why I've kept it separate 
from  the running lights. I have two group 27's and have never run out of juice. 
I've  put a strain on the system, but have always had enough. My solar panel 
was taken  out by a hail stone several years ago and I have a charger mounted 
on the peg  board in the V berth.
 
Rummy



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