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Which metric measures the total energy a battery can deliver over its lifetime?
- Energy Density
- Power Density
- Cycle Life
- Lifetime Energy Throughput
Answer: Lifetime Energy Throughput
Lifetime Energy Throughput = Nominal Capacity × Cycle Life × Depth of Discharge. Critical for comparing storage economics: high-throughput batteries (LFP, flow) suit frequent cycling; high-energy-density (NMC) suit weight-sensitive applications. Essential for energy storage planning questions.