Did you know a 15% drop in State of Health (SOH) can slash an electric vehicle's resale value by 22%? As secondary markets for EVs explode globally, buyers now scrutinize battery metrics like never before. But what exactly turns battery health into a financial equation? Let's decode how SOH became the linchpin of residual value calculations.
When your smartphone battery dies faster than promised, Coulombic efficiency (CE) holds the answer. This critical metric - measuring the ratio of discharge to charge capacity - determines why 38% of lithium-ion batteries underperform within 500 cycles. But why does this 19th-century electrochemical concept still haunt modern energy systems?
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