Flashlight Runtime Calculator

Calculate battery life and runtime for LED flashlights based on battery type, capacity, and usage patterns.

Calculate precise runtime estimates for LED flashlights across different brightness modes. Essential for emergency preparedness and professional users to predict battery life under various conditions. Perfect for security personnel, outdoor enthusiasts, and emergency planning.

Key Features

Support for common battery types and chemistries
Multiple brightness mode calculations
Temperature impact adjustments
Battery age and cycle wear consideration
Intermittent use patterns
Detailed efficiency analysis
Safety recommendations

Quick Setup

Battery Details

Battery Type

Number of Cells

Battery Age (months)

Charge Cycles

Light Settings

Brightness Mode

Driver Efficiency (%)

Usage Pattern

Intermittent Use

Environment

Temperature (°C)

Extreme temperatures significantly affect battery performance. Cold reduces capacity, while heat increases self-discharge.

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