Anyone use a battery brain with dual batteries?

[lancesaville]

Ok after getting down to the lake this weekend, It does have the dual sense module, so I kept it on 1, we went to a couple cove parties and each time played the stereo for over an hour at normal volume (10-15 on the kenwood) and never had any problems, cant really ask for more as we never really stop for more than an hour. Each time I went to start the boat back up the voltmeter was above 12. Good enough for me