I have been using car battery's for 15 years now! 
In that time I have bought 5 batterys and the 2 in there now are still great after 5 years! 
They cheaper, last longer, and the warr is a ton longer! 
As long as you are using then for starters they are great, its the deep cycle use of discharging and charging that will kill them, I leave in my boat all winter also, as a charged battery will not freze but a dead battery will.
		 
		
		
		
		
		
		
			
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				1986 V20   
Old Fishermen never die, we just SMELL that way!!
			  
		
		
		
		
		
	
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