{
  "node": {
    "id": "term:boost-charging",
    "type": "Term",
    "label": "Boost and top-up charging",
    "properties": {
      "id": "boost-charging",
      "name": "Boost and top-up charging",
      "section": "topic-charging",
      "definition": "A short, partial charge to add range quickly — often only into the part of the SOC window where the cell accepts high current best, typically 10–80 %. Charging above 80 % is slow on any fast charger, so frequent short top-ups are often faster than one long session.",
      "related": [
        "charging-curve",
        "fast-charging",
        "opportunity-charging",
        "usable-capacity"
      ],
      "url": "https://lemonergy.com/learn/glossary/boost-charging/",
      "mentions": [
        "charger",
        "state-of-charge"
      ]
    }
  },
  "edges": [
    {
      "id": "edge:78",
      "source": "term:boost-charging",
      "target": "workflow:opportunity-window",
      "type": "usedIn",
      "properties": {
        "sourceFile": "wiki-blocks.json"
      }
    },
    {
      "id": "edge:4473",
      "source": "term:boost-charging",
      "target": "topic:topic-charging",
      "type": "belongsTo",
      "properties": {
        "sourceFile": "terms.json"
      }
    },
    {
      "id": "edge:4474",
      "source": "term:boost-charging",
      "target": "term:charging-curve",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4475",
      "source": "term:boost-charging",
      "target": "term:fast-charging",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4476",
      "source": "term:boost-charging",
      "target": "term:opportunity-charging",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:4477",
      "source": "term:boost-charging",
      "target": "term:usable-capacity",
      "type": "relatedTo",
      "properties": {
        "sourceFile": "terms.json",
        "meaning": "Related context; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/boost-charging/charger",
      "source": "term:boost-charging",
      "target": "term:charger",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:mentions/boost-charging/state-of-charge",
      "source": "term:boost-charging",
      "target": "term:state-of-charge",
      "type": "mentions",
      "properties": {
        "sourceFile": "terms.json",
        "method": "build_glossary.mention_index + mentions",
        "field": "definition",
        "meaning": "Text mention; not a causal claim"
      }
    },
    {
      "id": "edge:4480",
      "source": "term:boost-charging",
      "target": "reference:tomaszewska-charging",
      "type": "cites",
      "properties": {
        "sourceFile": "wiki-references.json",
        "scope": "direct technical reference"
      }
    }
  ],
  "neighbors": [
    {
      "id": "workflow:opportunity-window",
      "type": "Workflow",
      "label": "Charge during available stops",
      "properties": {
        "id": "opportunity-window",
        "title": "Charge during available stops",
        "kind": "studio",
        "summary": "Availability is an independent signal.",
        "steps": [
          "Inspect availability and preferred windows.",
          "Shorten a stop."
        ],
        "example": "A 15-minute stop at a 100 kW grid cap has a 25 kWh upper grid-energy bound before losses and battery limits.",
        "observe": "More power cannot recover disconnected time.",
        "limits": "All battery and converter limits still apply. A schedule is not an electrochemical law.",
        "url": "https://design.lemonergy.com/cosim.html?example=charging-opportunity",
        "label": "Open the Studio example",
        "evidence": [
          "js/charging-control.js",
          "js/charging-scenarios.js",
          "docs/CHARGING_BLOCKS_SPEC.md"
        ]
      }
    },
    {
      "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:charging-curve",
      "type": "Term",
      "label": "Charging curve",
      "properties": {
        "id": "charging-curve",
        "name": "Charging curve",
        "section": "topic-infrastructure",
        "definition": "The power a vehicle actually accepts against its state of charge during a fast charge: high at low SOC, stepping down as the cells approach voltage and plating limits. The area under it, not the peak kilowatts, decides how long a stop takes.",
        "unit": "kW",
        "related": [
          "dc-fast-charging",
          "fast-charging",
          "cc-cv-charging",
          "derating",
          "boost-charging"
        ],
        "url": "https://lemonergy.com/learn/glossary/charging-curve/",
        "mentions": [
          "state-of-charge"
        ]
      }
    },
    {
      "id": "term:fast-charging",
      "type": "Term",
      "label": "Fast charging",
      "properties": {
        "id": "fast-charging",
        "name": "Fast charging",
        "section": "topic-charging",
        "definition": "Charging intended to replenish a specified amount of energy or state of charge in a short time. There is no universal C-rate threshold: performance depends on cell chemistry, temperature, starting state and power limits. High current can increase heating and lithium-plating risk, requiring appropriate limits.",
        "related": [
          "lithium-plating",
          "c-rate",
          "cc-cv-charging",
          "dc-fast-charging",
          "thermal-management",
          "mscc"
        ],
        "url": "https://lemonergy.com/learn/glossary/fast-charging/",
        "mentions": [
          "state-of-charge"
        ]
      }
    },
    {
      "id": "term:opportunity-charging",
      "type": "Term",
      "label": "Opportunity charging",
      "properties": {
        "id": "opportunity-charging",
        "name": "Opportunity charging",
        "aka": [
          "en-route charging",
          "terminus charging"
        ],
        "section": "topic-infrastructure",
        "definition": "Topping up a vehicle in short, high-power bursts wherever it stops anyway — a bus at its terminus or at stops, a forklift at breaks — instead of carrying enough energy for the whole day. It allows a smaller, lighter battery, at the price of frequent high-rate cycling and of chargers along the route.",
        "related": [
          "pantograph-charging",
          "depot-charging",
          "fast-charging",
          "electric-bus",
          "charge-acceptance",
          "inductive-charging"
        ],
        "url": "https://lemonergy.com/learn/glossary/opportunity-charging/",
        "mentions": []
      }
    },
    {
      "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": []
      }
    },
    {
      "id": "term:charger",
      "type": "Term",
      "label": "Charger",
      "properties": {
        "id": "charger",
        "name": "Charger",
        "section": "topic-charging",
        "definition": "The power electronics that convert mains or DC supply into the controlled current and voltage a battery needs. For lithium-ion it runs the CC-CV profile within the limits the BMS communicates, and stops rather than floats when the cell is full.",
        "related": [
          "cc-cv-charging",
          "bms",
          "onboard-charger",
          "dc-fast-charging"
        ],
        "url": "https://lemonergy.com/learn/glossary/charger/",
        "mentions": []
      }
    },
    {
      "id": "term:state-of-charge",
      "type": "Term",
      "label": "State of charge",
      "properties": {
        "id": "state-of-charge",
        "name": "State of charge",
        "abbr": "SOC",
        "section": "topic-state",
        "definition": "How full a cell is, as a fraction of its available capacity. State of charge, like temperature, affects how fast a stored cell ages.",
        "unit": "%",
        "related": [
          "depth-of-discharge",
          "ocv-soc-curve",
          "coulomb-counting",
          "state-of-health",
          "bms"
        ],
        "lesson": "fundamentals/battery-aging/#storage-soc",
        "example": {
          "title": "Interpret a charge inventory",
          "text": "If available capacity is 5 Ah and 3 Ah remains by the chosen estimator, SOC is 60%. 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": "reference:tomaszewska-charging",
      "type": "Reference",
      "label": "Lithium-ion battery fast charging: A review",
      "properties": {
        "title": "Lithium-ion battery fast charging: A review",
        "publisher": "eTransportation",
        "url": "https://doi.org/10.1016/j.etran.2019.100011",
        "type": "Review article",
        "scope": "CC-CV and alternative charging protocols, transport limitations, degradation and thermal implications; results depend on cell and test conditions. Software behavior is documented separately in Lemonergy block references.",
        "year": 2019,
        "authors": [
          "Anna Tomaszewska et al."
        ],
        "accessed": "2026-10-27"
      }
    }
  ]
}