{
  "node": {
    "id": "term:cycle",
    "type": "Term",
    "label": "Cycle",
    "properties": {
      "id": "cycle",
      "name": "Cycle",
      "section": "topic-charging",
      "definition": "One discharge and one charge, in either order. A full cycle spans the whole usable capacity; a partial cycle covers only part of it, and aging tests usually report both the cycle count and the depth of discharge.",
      "related": [
        "cycle-life",
        "depth-of-discharge",
        "equivalent-full-cycle",
        "cycle-aging"
      ],
      "url": "https://lemonergy.com/learn/glossary/cycle/",
      "mentions": [
        "usable-capacity"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:135",
      "source": "term:cycle",
      "target": "workflow:cycle-protocol",
      "type": "usedIn",
      "properties": {
        "sourceFile": "wiki-blocks.json"
      }
    },
    {
      "id": "edge:1056",
      "source": "term:cycle",
      "target": "topic:topic-charging",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:1057",
      "source": "term:cycle",
      "target": "term:cycle-life",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1058",
      "source": "term:cycle",
      "target": "term:depth-of-discharge",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1059",
      "source": "term:cycle",
      "target": "term:equivalent-full-cycle",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:1060",
      "source": "term:cycle",
      "target": "term:cycle-aging",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/cycle/usable-capacity",
      "source": "term:cycle",
      "target": "term:usable-capacity",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    }
  ],
  "neighbors": [
    {
      "id": "workflow:cycle-protocol",
      "type": "Workflow",
      "label": "Repeat charge/discharge",
      "properties": {
        "id": "cycle-protocol",
        "title": "Repeat charge/discharge",
        "kind": "protocol",
        "summary": "Cycle aging block repeats charge, discharge and rest.",
        "steps": [
          "Open Cycle aging block.",
          "Review currents and rests; compare throughput."
        ],
        "example": "Twenty 50%-depth discharges give ten discharge-equivalent full cycles at fixed nominal capacity.",
        "observe": "Cycle count differs from throughput.",
        "limits": "Scheduling cycles does not supply calibrated degradation or physical lifetime evidence.",
        "url": "https://design.lemonergy.com/",
        "label": "Open Design → Protocol bench",
        "evidence": [
          "js/test-protocol.js"
        ]
      }
    },
    {
      "id": "topic:topic-charging",
      "type": "Topic",
      "label": "Charging and discharging",
      "properties": {
        "id": "topic-charging",
        "name": "Charging and discharging",
        "lede": "How current goes in and comes out, and the limits that stop it.",
        "context": "Separate regulation from availability.",
        "example": "The same CC–CV law can operate overnight or during a short depot stop.",
        "lesson_url": "https://lemonergy.com/learn/fundamentals/capacity-and-c-rate/",
        "lesson_label": "Open charging quantities"
      }
    },
    {
      "id": "term:cycle-life",
      "type": "Term",
      "label": "Cycle life",
      "properties": {
        "id": "cycle-life",
        "name": "Cycle life",
        "section": "topic-ratings",
        "definition": "The number of full charge–discharge cycles a cell completes before its capacity falls to a stated fraction, usually 80 %, of its initial value under defined conditions. LFP cells reach several thousand cycles; high-energy NMC fewer.",
        "unit": "cycles",
        "related": [
          "end-of-life",
          "capacity-fade",
          "depth-of-discharge",
          "calendar-life",
          "equivalent-full-cycle",
          "cycle-life-test"
        ],
        "url": "https://lemonergy.com/learn/glossary/cycle-life/",
        "mentions": []
      }
    },
    {
      "id": "term:depth-of-discharge",
      "type": "Term",
      "label": "Depth of discharge",
      "properties": {
        "id": "depth-of-discharge",
        "name": "Depth of discharge",
        "abbr": "DOD",
        "section": "topic-state",
        "definition": "How much of a cell’s capacity is used in a cycle. Deep cycles cause more mechanical stress in the active materials than shallow ones.",
        "unit": "%",
        "related": [
          "state-of-charge",
          "cycle-life",
          "particle-cracking",
          "usable-capacity"
        ],
        "lesson": "fundamentals/battery-aging/#cracking",
        "url": "https://lemonergy.com/learn/glossary/depth-of-discharge/",
        "mentions": []
      }
    },
    {
      "id": "term:equivalent-full-cycle",
      "type": "Term",
      "label": "Equivalent full cycle",
      "properties": {
        "id": "equivalent-full-cycle",
        "name": "Equivalent full cycle",
        "abbr": "EFC",
        "section": "topic-ratings",
        "definition": "Total charge throughput divided by nominal capacity, so that many shallow cycles count as the equivalent number of full ones. It lets cycle life be compared across different duty cycles.",
        "formula": "EFC = ΣQ_throughput / (2·Q_nominal)",
        "related": [
          "cycle-life",
          "depth-of-discharge",
          "cycle"
        ],
        "example": {
          "title": "Count partial throughput",
          "text": "For a 5 Ah reference capacity, 20 Ah of total absolute charge-plus-discharge throughput corresponds to 20/(2 × 5) = 2 EFC. If counting discharge throughput only, use its matching convention without the factor of two."
        },
        "url": "https://lemonergy.com/learn/glossary/equivalent-full-cycle/",
        "mentions": [
          "nominal-capacity",
          "energy-throughput"
        ]
      }
    },
    {
      "id": "term:cycle-aging",
      "type": "Term",
      "label": "Cycle aging",
      "properties": {
        "id": "cycle-aging",
        "name": "Cycle aging",
        "section": "topic-aging",
        "definition": "Degradation caused by charging and discharging: mechanical strain in the particles, fresh SEI on cracked surfaces and, at high rate or low temperature, lithium plating. It scales with charge throughput and grows with depth of discharge and C-rate.",
        "related": [
          "calendar-aging",
          "particle-cracking",
          "lithium-plating",
          "depth-of-discharge",
          "equivalent-full-cycle"
        ],
        "lesson": "fundamentals/battery-aging/#cracking",
        "url": "https://lemonergy.com/learn/glossary/cycle-aging/",
        "mentions": [
          "sei",
          "c-rate",
          "energy-throughput"
        ]
      }
    },
    {
      "id": "term:usable-capacity",
      "type": "Term",
      "label": "Usable capacity",
      "properties": {
        "id": "usable-capacity",
        "name": "Usable capacity",
        "aka": [
          "available capacity"
        ],
        "section": "topic-ratings",
        "definition": "The part of a cell’s capacity that a system actually lets it use, after the BMS reserves margins at the top and bottom of the state-of-charge window. An electric-car pack may use 90–95 % of its gross capacity.",
        "related": [
          "nominal-capacity",
          "depth-of-discharge",
          "state-of-charge",
          "bms"
        ],
        "url": "https://lemonergy.com/learn/glossary/usable-capacity/",
        "mentions": []
      }
    }
  ]
}