Battery Life Calculator

🔋 Battery Life Calculator – Estimate Usage Time, Capacity, or Consumption

This easy-to-use Battery Life Calculator helps you determine how long a battery will last, the required battery capacity, or the current consumption of your device. Designed for electronics hobbyists, engineers, and everyday users, it allows quick and accurate predictions for battery-powered projects.

⚙️ What This Calculator Does:

With this calculator, you can input any two of the following:

• Battery Capacity (in mAh or Ah)
• Device Consumption (in mA or A)
• Battery Life Duration (in hours, days, weeks, months, or years)

The calculator will instantly compute the third value. It supports unit conversion and gives clear, real-time results with easy unit selection.

🧮 How It Works:

• Battery Life = Capacity / Load Current
  If you know the battery size and device current, this calculates how long the battery will last.
• Load Current = Capacity / Battery Life
  If you know the battery capacity and how long it should last, this gives the max current the device can consume.
• Battery Capacity = Load Current × Battery Life
  If you know the desired runtime and load current, this tells you how much capacity your battery needs.

🧰 Key Features:

• 🔁 Bidirectional calculations – Enter any two values to find the third.
• 🔧 Multi-unit support – Choose between mAh/Ah for capacity, mA/A for current, and various time durations.
• 📱 Mobile-friendly interface – Optimized layout for both mobile and desktop users.
• ⚡ Fast and intuitive – Instantly gives results with visual clarity and precision.

✅ Example Use Cases:

• Calculate how long your ESP32 or Arduino project will run on a battery.
• Estimate the battery size required for a sensor node or wearable device.
• Understand the impact of load current on runtime in low-power designs.