Re: Wal Mart Battery
I am not a fan of Wal Marts, but dont hang them just yet. You need to look at a couple of things first. (1) A parasitic current draw that may be adding to your problems. Battery switches can bleed a small amount of current through them. Some electronic devices use a small amount of current to keep there memory circuits alive (radio station pre-sets, gps user maps, etc), and at times, are wired in a way which bypasses the battery switch, all of which is pretty normal. Much over 25mA for a month will give you a no-start with a automotive type battery. (2) Charging system voltage. Maintance Free type batteries require a higher charging voltage (14.2 14.4 V) than older types of batteries (13.6 13.8). I dont know what type of boat you have, but if its small enough to trailer it to a good auto electric shop, they could test it for you. If you are comfortable with a Volt/Amp meter, you can check it your self. (3) Usage. Are you using the wrong type of battery? Using a starting type battery for things other than starting is tough on them. Using a deep cycle battery for only stating is tough on them. I know Exide makes a combo battery. (4) Mounting location. Marine batteries are supposed to be built to withstand a higher shock load than automotive types. Maybe a different mounting location would help save the battery some stress? (5) Memory, yours! If its like mine, one month may have been three. Batteries self discharge. If you think this is a problem, look for a Exide or Optima spiral wound type battery. They have a very very low self discharge rate and they dont freeze (I dont think thats a problem where youre at) <br />I have gotten two bad parts in row before, but never three. That is why I believe you need to look beyond just the battery as the problem. <br />Good Luck!