Energy density describes the amount of energy a battery can store relative to its size or weight, typically expressed as watt-hours per kilogram (Wh/kg) or watt-hours per liter (Wh/L).
Glossary: Energy Density
Expanded Explanation
High energy density allows batteries to deliver longer runtime while maintaining compact size and low weight. This characteristic is especially important in portable and space-constrained applications. Energy density varies by battery chemistry, cell design, and packaging efficiency. While higher energy density improves portability, it must be balanced with safety, thermal behavior, and lifespan considerations.Why it matters
Energy density directly impacts device size, weight, and runtime.iTECH Context
iTECH evaluates energy density when selecting battery technologies for compact and portable power solutions.Applications
Portable medical devices, wearable electronics, mobile industrial systemsRelated Terms
Battery Capacity, Lithium-Ion Battery Pack, Battery Efficiency