Quote Originally Posted by trypman1 View Post
My last 2 Duracell battery's lasted 6 years, guess what I replaced them with. One of the secrets to long life is refilling them with acid. I troll a lot and go fishing 3/4 times a week.
Should refill only with distilled water. Water is all that evaporates during use. Adding acid will corrupt the ratio of liquid in battery.
This can be confirmed by reading detailed instructions for battery. Pretty important to get this right.