Power & batteriesSmartphonesEveryday

Glossary

Battery life

Also: screen-on time, SOT

Battery life is how long a device lasts between charges in real use.

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Go deeper

Battery life is how long a device lasts between charges in real use. 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.

Fast chargingLTPOmAh

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Updated Jun 26, 2026