Well, we have been off grid for 3 months now, but I still have a couple questions. The batteries are charged by the solar panels or the generator, and the indoor and outdoor meters show them as full. They start out in the evening after the charging has stopped at about 12.9, and quickly fall to about 12.5 or 6. We use them about 2 or 3 hours in the evening, and again about the same in the morning. When I leave for work they are down to about 12.4 or sometimes 12.3. When the wife is using the very small hair dryer, on low, no more than 2 to 4 minutes, they sometimes pull down to 12.2, but then come right back up to 12.3 or 4. Our consumption is a very small TV (15 AC watts), and one or sometimes 2 at a time lights of 13 watts AC. I do have a 12 volt well pump that pumps water for the shower, stool, doing dishes, etc, not sure on the watts, Shurflo 2088 series. We may also charge a cell phone now and then. Am I pulling the batteries down to far or am I worried about nothing, I have never saw the batteries at 12.1, always 12.2 for a couple minutes, usually settle in at 12.3 to 12.5. Please help ease and old mans mind. Thanks, BEAR