Which one is my starting battery?

[HFarr]

I always use position 1&2 (combined), and have switched to either 1 or 2 a couple of times when floating or listening to the stereo while docked. But I think my boat will crank on either 1 or 2 by itself. Though I have not purposefully tried it that I remember.

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[MJHSupra]

I always use position 1&2 (combined), and have switched to either 1 or 2 a couple of times when floating or listening to the stereo while docked. But I think my boat will crank on either 1 or 2 by itself. Though I have not purposefully tried it that I remember.

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Same here. There might be a few times where I know we will be anchored in a cove for a long time, then I will switch to #2 when playing music.

Most of the time we are there a short time, so I do not bother. I also feel the switch should be easier to access - instead of telling someone to move or moving bags off the seats.

[RUGER761]

We run combined the full time, never had an issue with it draining down, both batts are identical. If you're swapping out to two different battery types, you can't leave them combined while the engine isn't running as one will drain the other and will eventually damage the other battery.

[996scott]

I run 1&2 at all times and have never had a problem.