Battery Runtime Calculator
Calculate the estimated runtime based on your battery capacity and device power consumption.
Formula
Runtime = (Capacity × Voltage × Depth of Discharge × Efficiency) / Load (Watts)
Legal / official rate note
Calculations are based on theoretical assumptions and show approximate values. It does not provide a strict guarantee.
Frequently Asked Questions
What is Depth of Discharge (DoD)?
It is the percentage of a battery's capacity that can be safely used. It is generally around 50% for lead-acid batteries and 80-90% for lithium batteries. Completely discharging the battery shortens its life.
What is System Efficiency?
It refers to the losses experienced when energy is transferred from the battery to the device (especially if an inverter is used). It is usually between 85% and 95%.
