I have a 22' walkaround with a 2 stroke Suzuki 200 on it.<br />I run a gps, fishfinder, stereo, vhf.<br /><br />I have a Exide 1000 cca Starting battery.<br /><br />What should my second battery be?<br /><br />I do have a battery switch for - 1 - 2 or both.<br /><br />thank you!