Marine House Bank Life Expectancy Calculator
How many years a marine house bank will last under your duty cycle — cycle wear vs calendar aging.
"How long will it last?" is the only battery question that matters to boat owners. Marine house banks combine deep cycling at anchor with months of float in the marina — AGM tolerates the vibration but sulfates if left partially charged, the classic boatyard failure mode. Pre-set to a typical marine house bank duty cycle, this tool runs the DoD-corrected cycle math against calendar aging and reports the binding constraint — change cycles/day and DoD to match your operation.
Cycle life scales as (rated DoD ÷ your DoD)^1.4 for Lead-acid (VRLA/AGM). Whichever of cycling wear or calendar aging hits 80% first sets the real service life — lightly-cycled packs die of old age, hard-cycled packs die of throughput.
Engineering estimate from published standards and typical equipment data. Site conditions, equipment datasheets and measured data govern the real result — confirm with a qualified engineer.
Use the free Marine House Bank Life Expectancy Calculator online — How many years a marine house bank will last under your duty cycle — cycle wear vs calendar aging. Runs instantly in your browser: no signup, no upload, mobile-friendly.
About Marine House Bank Life Expectancy Calculator
"How long will it last?" is the only battery question that matters to boat owners. Marine house banks combine deep cycling at anchor with months of float in the marina — AGM tolerates the vibration but sulfates if left partially charged, the classic boatyard failure mode. Pre-set to a typical marine house bank duty cycle, this tool runs the DoD-corrected cycle math against calendar aging and reports the binding constraint — change cycles/day and DoD to match your operation.
How to use Marine House Bank Life Expectancy Calculator
- 1Pick the chemistry (or keep the application's default).
- 2Enter your typical depth of discharge and cycles per day.
- 3Read expected cycles, service years, and which aging mechanism retires the battery.
Why use Marine House Bank Life Expectancy Calculator?
- ✓DoD inverse-power law — the actual shape of manufacturer cycle-life curves
- ✓Shows the binding constraint: cycling wear vs calendar aging
- ✓Energy-throughput output for warranty and TCO comparisons
- ✓All chemistries, one tool — compare LFP vs lead vs flow in seconds
Frequently asked questions
How does depth of discharge change battery cycle life?+
By a power law: halving DoD roughly triples Li-ion cycle count. An NMC pack rated 2,000 cycles at 85% DoD delivers ~5,500 cycles at 50%. This is why oversizing a battery (cycling it shallower) often costs less per delivered kWh over a decade.
Why might my battery die of old age before cycle wear?+
Calendar aging runs regardless of use — typically 1.5–2.5%/yr for Li-ion, worse when hot or stored full. A lightly-cycled backup battery (0.1 cycles/day) hits 80% from calendar fade in 8–13 years no matter how few cycles it saw. The tool shows which clock runs out first for your duty.
Which battery chemistry lasts longest?+
By cycle count: LTO (15,000+) and vanadium flow (12,000+, DoD-insensitive) lead; LFP (3,000–6,000) is the practical champion for cost; NMC/NCA (1,500–2,500) trade life for energy density; lead-acid (400–1,200) trails but is cheap upfront. Match chemistry to your cycling intensity.
What is energy throughput and why do warranties cap it?+
Throughput = capacity × DoD × cycles — the total energy a battery moves over its life. Warranties increasingly cap MWh throughput because it captures wear better than years or cycle counts alone. Compare price ÷ throughput across chemistries for the honest cost-per-kWh-delivered.
Embed Marine House Bank Life Expectancy Calculator on your website
Want Marine House Bank Life Expectancy Calculatoron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/marine-boat-battery-life-expectancy-calculator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Marine House Bank Life Expectancy Calculator — ToolJolt" loading="lazy"></iframe>Related Energy tools
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