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Handle date differences, exact age, schedule math, and countdown planning from one set of utility tools.
🔋 Battery Life Calculator
Calculate how long a battery will last based on capacity and current draw
📏 Input Parameters
📊 Results
Battery Life
16.0 hours
Days
0.67 days
📚 Understanding Battery Life
How Battery Life is Calculated
Battery life depends on the battery capacity (measured in mAh or Ah) and the current draw of your device. The basic formula is simple, but real-world factors affect actual runtime.
Formula
Battery Life (hours) = (Capacity in mAh / Current Draw in mA) × Efficiency
- Capacity: Total charge stored in the battery (mAh)
- Current Draw: Average current consumption (mA)
- Efficiency: Typically 80-90% due to losses
Factors Affecting Battery Life
- Temperature: Cold reduces capacity, heat accelerates degradation
- Discharge Rate: Higher currents reduce effective capacity
- Battery Age: Capacity decreases over time
- Battery Chemistry: Li-ion, NiMH, alkaline have different characteristics
Tips to Extend Battery Life
- Reduce current draw through efficient design
- Use sleep modes when device is idle
- Optimize software to minimize active time
- Choose appropriate battery chemistry for your application
🧭 Guided Journeys
Use a workflow instead of stopping at one result
These grouped paths are designed to help you continue with the most common follow-up calculations in this category.
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