{ "node": { "id": "term:storage-soc", "type": "Term", "label": "Storage state of charge", "properties": { "id": "storage-soc", "name": "Storage state of charge", "section": "topic-aging", "definition": "The state of charge at which a cell is kept when idle. 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A different estimate of available capacity changes this percentage, so compare SOC values only with the capacity convention recorded." }, "url": "https://lemonergy.com/learn/glossary/state-of-charge/", "mentions": [ "usable-capacity" ] } }, { "id": "term:shipping-soc", "type": "Term", "label": "Shipping state of charge", "properties": { "id": "shipping-soc", "name": "Shipping state of charge", "section": "topic-safety", "definition": "The state of charge at which cells leave the factory and travel, kept low to reduce both calendar aging and the energy available in an incident. Air-freight rules cap lithium-ion cells shipped alone at 30 %, and plants often target 10–20 %.", "unit": "%", "related": [ "storage-soc", "transport-regulations", "calendar-aging" ], "lesson": "fundamentals/cell-production/#finishing", "url": "https://lemonergy.com/learn/glossary/shipping-soc/", "mentions": [ "state-of-charge" ] } }, { "id": "term:electrode", "type": "Term", "label": "Electrode", "properties": { "id": "electrode", "name": "Electrode", "section": "topic-components", "definition": "A solid conductor where the cell’s reaction happens, in contact with the electrolyte. 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It holds the lithium when the cell is charged and releases it on discharge, and industry calls it the anode.", "related": [ "anode", "graphite", "positive-electrode", "copper-foil" ], "lesson": "fundamentals/cell-anatomy/#anode-cathode", "example": { "title": "Keep the polarity name", "text": "Graphite remains the negative electrode during charge and discharge, while the anode/cathode reaction labels change with operating direction." }, "url": "https://lemonergy.com/learn/glossary/negative-electrode/", "mentions": [ "electrode" ] } }, { "id": "lesson:fundamentals/battery-aging/", "type": "Lesson", "label": "Lesson 4 · Battery aging", "properties": { "url": "https://lemonergy.com/learn/fundamentals/battery-aging/" } }, { "id": "visual:self-discharge", "type": "Visual", "label": "Charge retention during storage", "properties": { "title": "Charge retention during storage", "summary": "A constant fractional loss produces an exponential decline.", "readout": "After 6 months: 83.297% retained; after 12: 69.384%.", "formula": "Q(t)/Q₀ = (1 − monthly loss)^t", "note": "Constant fractional loss; chemistry and temperature effects are not modeled.", "software": { "status": "reference", "label": "Reference concept", "body": "This is an illustrative retention model. battery-core aging functions do not estimate self-discharge. Reversible charge loss differs from permanent capacity fade.", "href": "../fundamentals/battery-aging/" }, "html": "
Stored charge retention
Stored charge retentionStorage time (months) versus Fraction of initial charge (%). Charge retained. Interpretation follows the graphs.0025350675910012Storage time (months)Fraction of initialcharge (%)
Charge retained
" } }, { "id": "reference:edge-degradation", "type": "Reference", "label": "Lithium ion battery degradation: what you need to know", "properties": { "title": "Lithium ion battery degradation: what you need to know", "publisher": "Physical Chemistry Chemical Physics", "url": "https://doi.org/10.1039/D1CP00359C", "type": "Review article", "scope": "Degradation mechanisms, modes, operational effects and their interactions.", "year": 2021, "accessed": "2026-10-27" } } ] }