Battery Runtime Calculator
Calculate how long your battery will last based on its capacity, load power, and efficiency. Perfect for UPS systems, solar setups, and backup power planning.
Step 1: Battery Specifications
Understanding Battery Capacity
Battery capacity determines how much energy your battery can store. Amp-hours (Ah) measures charge capacity, while Watt-hours (Wh) measures energy capacity. Multiply Ah by Voltage to get Wh.
Step 2: Load Details
About Battery Runtime
Runtime = (Battery Capacity × Voltage × Usable %) / Load Power. Battery type affects usable capacity – lithium batteries typically allow deeper discharge than lead-acid without damage.
Battery Runtime Results
Estimated Battery Runtime
Battery Runtime Comparison
| Battery Type | Capacity | Voltage | Runtime | Load |
|---|
Runtime vs Load Power Analysis
Battery Runtime Formula
Runtime (hours) = (Battery Capacity × Voltage × Usable %) / (Load Power / Inverter Efficiency)
The battery runtime is calculated by determining how much usable energy your battery can provide and dividing by your load power consumption adjusted for inverter efficiency.
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