lithium-ion battery
Enable an agent to recognise a lithium-ion battery, assess its stored energy and condition, and determine which uses or interventions its documented limits permit.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise a lithium-ion battery, assess its stored energy and condition, and determine which uses or interventions its documented limits permit.
A lithium-ion battery is a rechargeable electrochemical energy-storage device comprising one or more cells in which lithium ions move through an electrolyte between electrodes that reversibly accommodate lithium, while electrons flow through an external circuit.
It can be Identify the chemistry and assembly level from labels, documentation and traceable records.; Compare a proposed charger, load or replacement against documented electrical, thermal and interface limits.; Estimate usable energy and runtime with explicit operating assumptions and uncertainty.; Interpret telemetry and inspection evidence to assess charge state, degradation and faults.; Determine whether operation, diagnostic testing or service is permitted under the applicable documented procedure.; Select a documented storage, transport, reuse or recycling pathway appropriate to condition and jurisdiction..
Distinguishing features
Require chemistry evidence identifying rechargeable lithium-ion operation; rechargeability or the word lithium alone does not distinguish it from other lithium battery kinds.
Distinguish lithium-ion storage from lead-acid, nickel-based and capacitor storage using documented electrochemistry rather than enclosure shape or terminal voltage alone.
Treat lithium-polymer labelling as requiring clarification of electrolyte and construction, rather than automatically identifying a separate storage principle.
Determine whether the described object is a cell, module or pack before interpreting capacity, voltage, protection or thermal measurements.
Distinguish a battery from its host device or charger by identifying the electrochemical storage boundary and electrical interfaces.
Scope
+ Rechargeable lithium-ion identity, electrode chemistry and cell construction
+ Cell, module and pack boundaries, connections and integrated protection
+ Energy storage performance and permitted charge and discharge conditions
+ State of charge, state of health and evidence of degradation
+ Thermal behaviour, damage indicators and protective responses
+ Application suitability, traceability and lifecycle disposition
- Primary lithium battery kinds and rechargeable lithium-metal battery kinds
- Electrode materials, electrolytes and separators as independently modelled substances
- External chargers, inverters and host equipment beyond their battery interfaces
- Complete vehicles or stationary energy storage installations
- Manufacturing plants and recycling processes as operational systems
- Product catalogues and individual asset records as independent sources of truth
Characteristics
- Electrochemical identity
- Documented positive electrode, negative electrode and electrolyte families; unknown where unverified The lithium-ion label alone does not establish voltage limits, thermal behaviour or application suitability.
- Assembly configuration
- Cell, module or pack; series and parallel cell counts where known Determines how cell properties relate to terminal behaviour and which internal differences may be hidden.
- Rated charge capacity
- Ah, with temperature, discharge rate, voltage endpoints and source Capacity is comparable only when its rating or measurement conditions are known.
- Rated and usable energy
- Wh, distinguishing declared rating from measured usable energy and recording conditions Supports runtime estimates without treating charge capacity as energy.
- Voltage envelope
- V; nominal voltage and permitted upper and lower limits at the stated assembly level Supports charger compatibility and recognition of operation outside documented limits.
- Current and power envelope
- A and W; continuous or pulse duration, direction, temperature and state dependencies Prevents a brief peak rating from being interpreted as a sustained operating capability.
- Temperature envelope
- °C; separate charge, discharge and storage limits, with sensor location Permitted operation depends on both temperature and the activity being attempted.
- State of charge
- % with estimation method, reference capacity, timestamp and uncertainty Indicates estimated remaining charge while exposing the limits of the estimate.
- State of health
- Capacity retention %, resistance change or application-specific health metric with baseline and method Avoids treating health as a universal percentage independent of measurement or intended use.
- Physical construction
- Cylindrical, prismatic, pouch or other documented form; dimensions in mm and mass in kg Constrains mounting, handling, mechanical protection and replacement compatibility.
- Protection and monitoring
- Associated protection circuits, battery management system, sensors, disconnects and cooling provisions Identifies which safeguards exist and whether they belong to the battery or its host.
- Observed condition
- Documented observations including deformation, leakage, corrosion, abnormal heating, fault indication or unknown condition Supports evidence-based restriction of use without equating missing observations with a healthy battery.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 7 bundles · 13 layers · 21 findings · 38 questions.
Electrochemical identity Establish what makes the registered thing lithium-ion and distinguish its relevant chemistry variants.
A shared lithium-ion label does not make batteries interchangeable or give them identical operating limits.
Chemistry boundary
Separate lithium-ion identity from neighbouring lithium storage technologies and ambiguous commercial labels.
Verified storage chemistry
Record the evidence needed to classify the storage mechanism and electrode system without inferring chemistry from appearance.
- What manufacturer or technical evidence identifies this battery as rechargeable lithium-ion rather than primary lithium or rechargeable lithium-metal? definition
- Which positive electrode, negative electrode and electrolyte descriptions are verified, and which remain unspecified? provenance
Cell construction
Describe construction choices relevant to integration and interpretation of labels.
Form and construction evidence
Distinguish external cell format from internal chemistry and electrolyte terminology.
- What are the documented cell format, dimensions, mass and mechanical mounting constraints? measurement
- If the battery is labelled lithium-polymer or solid-state, what construction does that label denote and does the chemistry remain within this model's boundary? boundary
Assembly and interfaces Locate the battery boundary and relate constituent cells to externally accessible behaviour.
Cell ratings and safeguards cannot be assumed to describe a complete pack or its host system.
Electrical topology
Identify assembly level, cell arrangement and the scope of measured quantities.
Cell-to-pack mapping
Record how cells form the assembly and where evidence applies.
- Is the described battery a cell, module or pack, and what series and parallel arrangement is documented? boundary
- Which voltage, current and temperature observations describe individual cells, cell groups or the complete assembly? measurement
Host and management interfaces
Describe power, communication and thermal connections together with responsibility for control.
Interface and control ownership
Identify terminal compatibility and which battery or host components control operation.
- What terminal polarity, connector, communication and thermal interface requirements govern connection to a host or charger? action
- Which monitoring, balancing and disconnect functions are integrated into the battery, and which depend on external equipment? boundary
Energy and operating envelope Relate useful energy delivery to documented charge, discharge and temperature constraints.
Capacity alone cannot establish runtime, charger suitability or permitted power demand.
Capacity and energy
Make ratings and measured performance interpretable under explicit conditions.
Conditional energy performance
Record charge capacity and energy as separate quantities with their test boundaries.
- What Ah and Wh ratings are declared, and at what temperature, discharge rate and voltage endpoints were they established? measurement
- What usable energy is supported for the intended load profile, including reserve settings and conversion losses outside the battery boundary? measurement
Permitted charge and discharge
Capture limits and control requirements separately for charging and delivering energy.
Documented operating limits
Tie operating decisions to the applicable battery specification and conditions.
- What charge method, termination criteria, voltage limits and current limits does the applicable specification permit? action
- How do permitted charge and discharge currents depend on temperature, state of charge and pulse duration? measurement
- What evidence establishes compatibility with the proposed charger and load? provenance
State and degradation Represent estimated stored charge, performance loss and differences among constituent cells.
Batteries with identical ratings can have materially different available energy and power capability.
Charge state estimation
Expose how remaining charge is inferred and how much confidence the estimate deserves.
State of charge evidence
Associate each charge estimate with its reference, method and observation conditions.
- How was state of charge estimated, against which capacity reference, and when was the estimate last updated? measurement
- What uncertainty or calibration limitations affect the estimate under the present temperature and load history? measurement
Ageing and cell divergence
Assess performance change over time without reducing every degradation mode to one health score.
Health and imbalance evidence
Connect capacity loss, resistance and cell differences to baselines and service history.
- What capacity-retention and resistance measurements support the health assessment, and what methods and baselines make them comparable? measurement
- What evidence shows cell-group voltage or temperature divergence, and how does it constrain usable pack performance? measurement
- Which storage, temperature, charge and discharge history is known, and which proposed degradation causes remain unverified? provenance
Thermal behaviour and fault response Connect thermal observations, physical damage and protection status to permitted responses.
A plausible voltage or charge estimate does not establish that a battery is fit to operate.
Thermal condition
Interpret temperature observations in the context of sensor coverage and heat removal.
Thermal observation coverage
Record what temperature evidence reveals and what internal conditions it cannot resolve.
- Where are temperatures measured, what gradients or rates of rise are observed, and which regions are unmonitored? measurement
- What cooling or heat-dissipation provisions are required, and what operation is permitted when they are unavailable? action
Damage and protection
Recognise abnormal condition and determine the scope of protective systems.
Fault evidence and response
Link observed damage and fault indications to documented restrictions and response procedures.
- What inspection or telemetry evidence indicates swelling, leakage, mechanical damage, abnormal heating or an electrical fault? measurement
- Which overcharge, overdischarge, overcurrent and temperature protections are documented, and what evidence establishes their present status? provenance
- Which documented stop-use, isolation or emergency procedure applies to the observed condition, and who is authorised to carry it out? action
Traceability and lifecycle disposition Establish applicable evidence and conditions for integration, storage, transport and end-of-service decisions.
Suitability depends on intended application, condition and evidence whose scope may be narrower than a battery family.
Specification and conformity
Connect the battery to applicable specifications and independently identifiable conformity evidence.
Applicable evidence scope
Distinguish supported conformity claims from labels or records that cover another configuration.
- Which manufacturer, model, revision and lot or serial records connect the battery to its governing specification? provenance
- Which standards and issuing bodies apply to the intended application and jurisdiction, and which editions and test records support conformity? provenance
- Does the cited evidence cover the cell, the assembled pack or the integrated system, and does it cover this configuration? boundary
Storage, transfer and retirement
Determine lifecycle actions using condition, history and destination requirements.
Condition-dependent disposition
Record the evidence and procedures needed to keep, transfer, repurpose or retire the battery.
- What storage temperature, charge condition, inspection interval and terminal protection does the applicable documentation require? action
- What current transport requirements and supporting records apply to its configuration, condition, route and transport mode? action
- What assessment permits continued service or reuse, and what documented collection or recycling pathway applies when it is retired? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Recalled information only; standard editions, detailed applicability and regulatory implementation dates require verification.
- Measurement ranges are broad cell-level examples, not specifications or safe operating limits for a particular product.
- Chemistry labels mix positive-electrode families with the negative-electrode designation LTO; performance also depends on electrode pairing, construction and operating conditions.
- Which of these check these first hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Lithium iron phosphate (LFP)
- Lithium nickel manganese cobalt oxide (NMC)
- Lithium nickel cobalt aluminium oxide (NCA)
- Lithium cobalt oxide (LCO)
- Lithium manganese oxide (LMO)
- Lithium titanate (LTO, distinguished by its negative-electrode material)
- Which of these kinds and varieties hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- UN dangerous goods numbers - UN 3480; UN 3481 - UN 3480 identifies lithium-ion batteries shipped on their own; UN 3481 identifies them packed with or contained in equipment. These are transport classifications, not product identifiers.
- Cylindrical cell size designations - 18650; 21700 - Common nominal formats approximately 18 mm diameter by 65 mm length and 21 mm diameter by 70 mm length respectively; dimensions alone do not establish chemistry, capacity or interchangeability.
- Which of these identifiers and schemes hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- IEC 62133-2 - International Electrotechnical Commission safety requirements for portable sealed secondary lithium cells and batteries.
- IEC 62619 - International Electrotechnical Commission safety requirements for secondary lithium cells and batteries used in industrial applications.
- UN Manual of Tests and Criteria, subsection 38.3 - United Nations transport testing provisions for lithium cells and batteries.
- UL 1642 - UL safety standard for lithium batteries.
- Regulation (EU) 2023/1542 - European Parliament and Council regulation concerning batteries and waste batteries.
- Which of these standards and regulation hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Portable electronics, including phones and laptop computers.
- Traction batteries for electric vehicles and electric bicycles.
- Cordless power tools and portable equipment.
- Stationary storage for renewable energy and electricity grids.
- Backup power and uninterruptible power supplies.
- Which of these real-world use hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Nominal cell voltage - Approximately 2.3-3.7, depending on chemistry; LTO cells are typically at the lower end - V
- Cell specific energy - Approximately 70-300 across common commercial chemistries; complete packs generally have lower values - Wh/kg
- Capacity of common 18650 and 21700 cylindrical cells - Approximately 1.5-6, depending on size and design - Ah
- Which of these typical measurements hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Internal short circuits caused by manufacturing defects, mechanical damage or separator degradation can initiate thermal runaway.
- Overcharging or excessive heating can cause electrolyte decomposition, gas generation, venting and fire.
- Charging outside permitted temperature or current limits can cause lithium plating, capacity loss and increased short-circuit risk.
- Deep overdischarge can damage internal components and make subsequent charging hazardous.
- Ageing increases resistance and reduces capacity; failed cells can release flammable gases and toxic decomposition products.
- Which of these failure modes and hazards hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Transport requirements depend on mode and jurisdiction, with international frameworks drawing on UN classifications and testing provisions.
- The European Union applies a dedicated batteries regulation, while collection, recycling and producer-responsibility obligations differ elsewhere.
- Which of these regional variation hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Lithium metal battery - Uses metallic lithium as an electrode active material; conventional lithium-ion batteries use lithium-hosting electrode materials and are designed for recharge.
- Lithium-polymer battery - Usually denotes a lithium-ion subtype distinguished by its polymer-containing electrolyte system; a pouch enclosure alone does not establish electrolyte composition.
- Sodium-ion battery - Uses sodium ions rather than lithium ions as the principal charge-carrying species exchanged between electrodes.
- Battery cell - A cell is an individual electrochemical unit; a battery may comprise one or more cells with connections, protection and packaging.
- Solid-state battery - Distinguished by a solid electrolyte rather than by lithium-ion chemistry; the categories can overlap.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of lithium-ion battery this model covers, and on what evidence? provenance
What the second pass must settle
- Does an existing Vercy world model already own lithium-ion batteries or rechargeable electrochemical storage, requiring this registry entry to link to it or specialise it?
- Which chemistry variants, including lithium-polymer and solid-state-labelled products, belong within the registry's intended boundary?
- Which authoritative sources should establish chemistry-specific operating limits and representative capacity, energy, mass and dimensional ranges?
- Which application-specific standards, transport requirements and conformity records should be researched first, and for which jurisdictions?
- Which state-of-health methods and retirement criteria can support comparison across battery variants without implying a universal threshold?