What is the average life expectancy for a marine battery (dual purpose)? I usually buy Sears Marine heavy duty batteries, but after about 2-3 years they don't hold a charge. The warranty is for about 1 year, prorated. Also, they don't get used very often.
I guess the real question is should I just plan on getting new batteries every two years or so, or is there a way to extend the life expectancy?
I guess the real question is should I just plan on getting new batteries every two years or so, or is there a way to extend the life expectancy?