1. What is Laptop Battery Capacity?

Battery capacity in watt-hours (Wh) measures the total energy a laptop battery can store. It's a more accurate representation of battery life than voltage or amp-hours alone, as it combines both electrical properties.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Wh \) — Watt-hours (battery capacity)
• \( Voltage \) — Battery voltage in volts (V)
• \( Ah \) — Amp-hours (current capacity)

Explanation: This formula calculates the total energy storage capacity by multiplying the battery's voltage by its amp-hour rating.

3. Importance of Battery Capacity Calculation

Details: Knowing your laptop's battery capacity helps estimate battery life, compare different batteries, and understand energy consumption. Higher Wh ratings generally indicate longer battery runtime.

4. Using the Calculator

Tips: Enter the voltage (typically found on the battery label, e.g., 11.1V, 14.8V) and amp-hour rating (e.g., 4.4Ah, 6.7Ah). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical laptop battery capacity?
A: Most laptop batteries range from 30-100 Wh, with ultrabooks around 40-60 Wh and gaming laptops up to 90-100 Wh.

Q2: How does battery capacity affect battery life?
A: Higher Wh capacity generally means longer battery life, assuming similar power consumption. A 60Wh battery will typically last longer than a 40Wh battery.

Q3: Can I replace my laptop battery with a higher capacity one?
A: Only if the physical size and voltage match your laptop's specifications. Higher capacity batteries may be larger or have different form factors.

Q4: Why do airlines have Wh restrictions for batteries?
A: Airlines typically restrict batteries over 100 Wh due to safety concerns. Most laptop batteries are below this limit.

Q5: How accurate is this calculation?
A: The calculation provides the theoretical maximum capacity. Actual usable capacity may be slightly less due to various factors including age and temperature.