>> I charged the aux battery with >> > no load on it (fridge and inverter are the only things wired to it) for >> > about 45 minutes to get to 12.30 volts. > 12.3V is not a charged battery in the first place. That is approaching > 60% discharged, depending on your meter's accuracy. >> > In an hour and a half of using the >> > fridge it dropped from 12.3 to 10.62 volts, about the lower limit for any >> > cooling. Just a reminder to keep temperature in mind--as it affects battery charge and voltage. See, for example: http://www.trojan-battery.com/Tech-Support/BatteryMaintenance/Charging.aspx and note paragraph 6. You can probabaly ignore temperature in the summer, but certanly not in cool and cold weather. Another site: http://www.odysseybatteries.com/files/techbook.pdf Richard Bouler |
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