Battery Runtime Calculator

Estimate how long your battery will last based on load current and efficiency.

Enter required values to calculate runtime.

Runtime (Hours): 0.000 hr
Runtime (Minutes): 0.000 min

How to Use

  • Enter battery capacity (mAh)
  • Enter load current (mA)
  • Optionally enter efficiency (%)
  • Click CALCULATE

Battery Runtime Explanation

Formula: Runtime = (Capacity × Efficiency) / Current

Used for estimating battery backup time.

Battery Formula Table

Parameter Formula
Runtime (Hours) Capacity / Current
Adjusted Runtime (Capacity × Efficiency) / Current

FAQs

What affects runtime?
Load current and efficiency.

Why use efficiency?
To account for real-world losses.

Where is it used?
IoT, batteries, electronics.

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