Calculadora da vida útil da bateria

Milliamp Hour (mAh)

This is a measure of a battery's energy capacity. A battery with a 2000 mAh rating can theoretically provide a current of 2000mA for one hour, 1000mA for two hours, and so on.

Current (A / mA)

Measured in Amperes (A) or Milliamperes (mA), current is the rate at which electric charge flows. In our context, it's how much energy your device "consumes" per unit of time.

Watt-Hour (Wh)

Another measure of energy capacity, often used for larger batteries like those in laptops. It accounts for voltage. The formula is: Watt-Hours = (Milliamp-Hours × Volts) / 1000.

This calculator provides a theoretical estimate. In the real world, several factors can reduce the actual battery life you experience.

• Temperature: Extreme cold or heat significantly impacts a battery's chemical reactions, reducing its effective capacity and efficiency.
• Battery Age & Health: As a battery goes through charge/discharge cycles, its maximum capacity degrades. An older battery will not last as long as a new one.
• Discharge Rate: Draining a battery very quickly is less efficient and generates more heat, wasting energy. The stated mAh capacity is often based on a slow, steady discharge rate.
• Self-Discharge: All batteries slowly lose charge over time, even when not connected to a device. The rate depends on the battery chemistry and temperature.