A simple question but I can use the advice. My stand-alone auto battery charger has options for charging at either 2 or 12 amps (with a regular and deep cycle selector as well). Anyways, I use this battery alot for trolling and therefore charge it often. Only a single batt set-up. So what is best......charge at 2 or 12amps, and why? I know of the obvious differnce in charging time but wondering about extending battery life too. Thanks for any sugestions and rationale.<br /><br />Bill