Glossary: Battery Capacity (Ah vs Wh)

Battery capacity describes the amount of energy a battery can store and is commonly expressed in ampere-hours (Ah) or watt-hours (Wh).

Expanded Explanation

Ampere-hours measure the total charge a battery can deliver at a given current, while watt-hours represent the total energy available, accounting for both voltage and current. Watt-hours provide a more accurate comparison across battery systems with different voltages. Understanding the difference between Ah and Wh is essential when sizing batteries for specific applications.

Why it matters

Correct capacity measurement ensures batteries meet runtime and power requirements.

iTECH Context

iTECH specifies battery capacity using appropriate metrics based on application needs.

Applications

Portable power systems, medical devices, industrial equipment