Battery Bank Sizing Calculator
Size your marine battery system with detailed load analysis
Electrical Load Analysis
Enter typical daily usage for each category
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Battery Bank Requirements
Recommended Bank Capacity
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Usable Capacity
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Daily Energy Consumption
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Daily Amp-Hours
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Total Required (with autonomy)
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Depth of Discharge Limit
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Suggested Configuration
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Minimum Charger Size
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Estimated Bank Weight
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Battery Chemistry Comparison
| Type | DoD | Cycles | Wt/Ah |
|---|---|---|---|
| Flooded | 50% | 300-500 | ~1.1 lb |
| AGM | 50% | 400-800 | ~0.9 lb |
| Gel | 50% | 500-1000 | ~0.95 lb |
| LiFePO4 | 80% | 2000-5000 | ~0.3 lb |
Marine Battery System Tips
Sizing Guidelines
Never discharge lead-acid batteries below 50% to maximize lifespan.
LiFePO4 batteries can safely discharge to 80% or more.
Always keep starting battery separate from house bank.
Charging
Charger should be 10-20% of bank capacity (Ah).
Multi-stage smart chargers extend battery life.
LiFePO4 requires specific charging profiles.