I've read all the battery and inverter threads. I've done separate research on inverters. I considered putting on an Xantrex MS2000 inverter and several golf cart batteries. The cost for this is $3,000-$4,000 installed. 2008 will be my first boating season. The thought was to have something to power a coffee pot, the wife's hair dryer and our hot water heater for a shower. After careful consideration, I've decided to save myself at least $2,000 and go without the inverter for the first boating season, seek out shore power for the "real" vacations, and rough it for the overnighters. I can use the alcohol stove for coffee. With that thought, I realized that the stock house battery that comes with my boat will probably not keep up with the lighting, stereo, and DVD player. So, I'm going to pile on some golf cart batteries for 12V DC reserve this year. I've researched the Interstate line offered by the SeaRay dealer, Trojan, Rolls, and Deca. I haven't decided which one or how many. Once I have the batteries, in '09 I can reconsider the inverter or trading up to a 310 with genset. Any testimonials on batteries and recommendations on what is adequate for reserve capacity for 12V D/C? Do you agree that the 200 amp-hr stock house deep cycle battery is inadequate for an overnight with the lights on and the DVD player entertaining the 3 year-old? I'm looking for real experience, not the calculations. Thanks.