Lets's talk multiple battery setups. (3+)

[you da man]

8 hrs of moderate volume playing time is alot of constant playing time especially for a 3 battery setup, 4 amps (depending on specs), and lights. You might want to talk to David or wait for him to chime in. He'll probably offer you 3 or more possibilities for charging options and battery setups. I use my factory 70A alternator with no issues but I only float for an hour or so at a time. If longer it's just usually me and my girl just listening at low volume in the evening. I'm using 3 Deka group 31 batteries which are stronger than the Optimas most run on big systems.