latley my battery has been very low and i guess it is time for a new one. before i get a new one i wanted to ask if anyone has ever heard some sorth of a soft whistle coming from the battery? i rode my quad last week and every once in a while i would hear what i believed to be the battery make like a soft whistling sound. i also hear this sound when i am jump starting it. may some one tell me if they have expieranced this or if its even the battery making the noise? what needs to be done to fix it?