Convertidor Universal Pro

Calculadora de Autonomía de Batería

Calcule cuánto durará una batería con una carga de potencia determinada, considerando su capacidad y voltaje.

Related Energy & Power Calculators

How to Use the Battery Runtime Calculator

  1. Battery Capacity: Enter the capacity of your battery in Amp-hours (Ah).
  2. Battery Voltage: Input the nominal voltage of your battery (e.g., 12V, 24V).
  3. Power Load: Enter the total power consumption of the devices the battery will power, in Watts.
  4. Depth of Discharge (DoD): Specify the maximum percentage of the battery's capacity you plan to use. For lead-acid batteries, 50% is recommended for longer life. For Lithium (LiFePO4), 80-90% is common.

Understanding Battery Runtime

This calculator determines the total energy stored in a battery (in Watt-hours) and then divides it by the power your devices consume. The result is the estimated time the battery can sustain that load.

Formulas Used

Energy (Watt-hours) = Battery Capacity (Ah) × Battery Voltage (V)
Runtime (Hours) = (Energy × Depth of Discharge %) / Power Load (Watts)

Frequently Asked Questions (FAQ)

Does this account for inverter efficiency?

No, this is a simplified calculation. If you are using an inverter to convert DC battery power to AC, you should account for its inefficiency. A typical inverter is 85-95% efficient. To get a more accurate result, divide the final runtime by the inverter's efficiency (e.g., divide by 0.90 for 90% efficiency).

What about Peukert's Law?

Peukert's Law states that as the rate of discharge increases, the available capacity of a battery decreases. This calculator does not account for Peukert's effect, which is most prominent in lead-acid batteries under heavy loads. The calculated runtime is most accurate for low to moderate discharge rates.

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