Typically the AH rating is based on a 20 hour discharge rate. Therefore, a 100 AH rated battery can deliver 5 amps for 20 hrs (5 amps x 20 hours = 100 AH) before the battery voltage drops below 10.5 volts. At discharge rates less than the 20 hour rate (0.83 amps in your case) the battery AH rating will increase slightly.
However: Discharging your battery to the AH rated level (10.5 volts) will result in greatly reduced life. The chart I have for Interstate deep cycle batteries indicates a life of 2200 cycles to 25% discharge (12.45 volts), 1000 cycles to a 50% discharge (12.25 volts) and 325 cycles to 100% discharge (11.9 volts).
In conclusion: Using your battery for 5 days between charging will result in greatly reduced life.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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