# Wattage
> Wattage tells you how much power a charger can deliver at a given moment.
Topics: Power & batteries
Difficulty: Everyday
Aliases: watts, W
Updated: 2026-06-26T08:00:00.000Z
## In one analogy

It is the speed of the tap, while battery capacity is the bucket size.

## Go deeper
Wattage tells you how much power a charger can deliver at a given moment. In everyday buying decisions, the useful question is not just what the spec says, but what it changes for comfort, cost, speed, safety, or battery life.