Glossary: Self-Discharge

Self-discharge is the gradual loss of stored energy in a battery when it is not connected to a load.

Expanded Explanation

All batteries experience self-discharge due to internal chemical reactions. The rate of self-discharge varies by battery chemistry, temperature, and storage conditions. Excessive self-discharge can reduce available capacity during storage and impact readiness for use, particularly in standby or emergency systems.

Why it matters

Low self-discharge improves shelf life and ensures batteries are ready when needed.

iTECH Context

iTECH considers self-discharge characteristics when specifying batteries for standby and long-storage applications.

Applications

Backup power systems, medical devices, stored battery packs