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health.pacemaker-battery-life Calculator
Estimates pacemaker battery longevity from current drain, pacing percentage, and battery capacity. Pacemaker longevity is typically 7–12 years depending on pacing burden — elective generator replacement is triggered by ERI (Elective Replacement Indicator) before end of service.
Inputs
Battery Capacity Ah
Maximum throughput or storage. Operating near 100% capacity typically increases failures and wait times.
Pacing Threshold Ma
Rate of charge flow (A). I = V/R. Above ~100 mA through the body can be lethal. Fuses protect against overcurrent.
Pacing Percentage
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
Background Drain Ua
Reference formula or conversion factor shown for context.
Results
estimated battery life (years)
The value at the specified point or condition.
estimated battery life (days)
The value at the specified point or condition.
average current draw (mA)
Electric charge flow rate (A). Governs wire sizing — too much current causes dangerous heating. Fuses protect circuits from overcurrent.