getting 3 yrs out of batts is pretty good/normal these days imo. Some get longer use, some don't. I use the Walmart brand, the TM batt is $75, if it last 3 yrs or more, its only $25/yr, which is less than one trip to the lake when you consider gas/food/misc/lures, etc. Just take care of 'em (charge 'em up asap when you get back home) and go with what's in the budget.