Replacement Interval Formula:
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The battery replacement interval estimates how many years your RV solar battery will last before needing replacement based on its cycle life and your daily usage patterns.
The calculator uses the following equation:
Where:
Explanation: The equation converts the battery's total cycle life into years of service based on your daily usage.
Details: Knowing when to replace your RV battery helps prevent unexpected power failures and allows for better trip planning and budgeting.
Tips: Enter the cycle life from your battery specifications and estimate your average daily cycles. Deep cycle batteries typically have cycle lives between 500-4000 cycles.
Q1: What's a typical cycle life for RV batteries?
A: Flooded lead-acid: 300-700 cycles, AGM: 500-1000 cycles, Lithium: 2000-5000 cycles.
Q2: How do I estimate daily cycles?
A: Track your daily power consumption vs battery capacity. One full discharge/charge = 1 cycle.
Q3: Does temperature affect battery life?
A: Yes, extreme temperatures can significantly reduce actual cycle life compared to lab ratings.
Q4: Should I replace batteries before they fail completely?
A: Yes, battery capacity degrades over time. Consider replacement when capacity drops below 80% of original.
Q5: Can I extend battery life?
A: Yes, by avoiding deep discharges, maintaining proper charge levels, and keeping batteries at moderate temperatures.