Tesla Megapack 2 XL

Commercial and utility battery energy storage system

Megapack 2 XL is an integrated utility-scale battery system with battery modules, inverter, thermal management and vertically integrated software. Tesla publishes product, warranty, service and emergency information, but no public third-party local endpoint, protocol map or read-only role for Edge. Direct integration remains unverified.

    Commercial and utility battery energy storage system

    Compatibility

    Direct Edge integration not yet verified

    Tesla describes vertically integrated monitoring and control software but does not publish a third-party local endpoint, protocol, point map, authentication model or read-only client role.

    Megapack 2 XL part family 1848844-x*y*-z* in Tesla emergency guide revision 2.8. Confirm exact project hardware, software, warranty, service and site-control contract. No Tesla, protection, fire or market authority is transferred.

    Models

    Download
    ModelsInterfaceRoute into Edge
    Megapack 2 XL, part family 1848844-x*y*-z*Integrated battery modules, inverter, thermal systems and Tesla softwareUse only a Tesla-approved project export or interface contract with explicit read-only permissions.
    Megapack and Megapack 2Earlier part families with different voltage, mass and enclosure specificationsDo not transfer Megapack 2 XL dimensions, limits or interface assumptions.

    Specifications

    The emergency guide distinguishes Megapack 2 XL from earlier product families and supplies approximate enclosure and high-voltage information for emergency identification, not a telemetry interface.2

    Exact family
    Megapack 2 XL, part family 1848844-x*y*-z*2
    Maximum system voltage
    Below 1,230 V DC; 480 V AC2
    Maximum mass
    38,100 kg2
    Published software boundary
    Tesla vertically integrated monitoring, control, updates, diagnostics and service1
    Third-party interface
    No public local protocol, point map or read-only client contract in the retained sources12
    Safety scope
    Emergency response and high-voltage isolation remain under Tesla and the approved site plan2

    Interface

    Documented measurements and integration boundaries for Megapack 2 XL.

    • Potential identity, availability, state, power, energy, state of charge, temperatures and alarms require a Tesla-approved project interface.
    • Megapack, site controller, revenue meter, protection relay and market platform values remain distinct records with source and timestamp.
    • Fire detection, emergency response, high-voltage isolation and service procedures remain solely under Tesla and the approved site plan.
    • No dispatch, charge, discharge, reactive-power, grid-service, protection, reset or emergency command is approved by this guide.

    Assessment

    Megapack 2 XL part family 1848844-x*y*-z* in Tesla emergency guide revision 2.8. Confirm exact project hardware, software, warranty, service and site-control contract. No Tesla, protection, fire or market authority is transferred.

    InteroperabilityNot yet assessed
    The retained public evidence does not identify a third-party local endpoint, protocol, point map or read-only client role.12
    AccuracyNot yet assessed
    The externally readable point set, units, sign conventions, quality states and freshness rules are not established.12
    SecurityNot yet assessed
    Authentication, encryption, roles and read-only privilege separation for an independent client are not defined in the retained public sources.12
    ReliabilityLimited
    System operating limits are published, while client recovery, stale-data behaviour and concurrent-client limits remain project-specific.12
    RuggednessSupported with conditions
    The emergency guide publishes approximate enclosure and voltage data; installation and emergency plans govern the actual project.12
    ScalabilityLimited
    Megapack is designed for multi-unit utility projects, but third-party data limits and aggregation contracts are not public.12
    LifecycleSupported with conditions
    Tesla publishes long-term service and warranty offerings; access and lifecycle records remain contract-specific.12

    Setup

    1. Confirm the delivered system

      Record every enclosure, battery rack, PCS, BMS, EMS, meter and controller identity, plus firmware, software, network and contract revisions.

    2. Map authority before data

      Document which system owns charge and discharge, protection, fire and life safety, grid control, market dispatch, settlement, warranty and emergency response.

    3. Obtain the interface contract

      Require the exact endpoint role, firmware-matched point map, authentication, permissions, units, sign conventions, quality states, timestamps, update rates and client limits.

    4. Prove read-only monitoring

      Begin with an approved read-only allowlist. Compare identity, state, power, energy and alarms with the authoritative system and an independent connection-point meter.

    Common questions

    Does Megapack publish a direct Edge interface?
    Not in the retained public sources. A project-specific Tesla-approved export or API contract is required before any integration claim.1
    Can a monitoring client issue dispatch commands?
    No. Dispatch and market participation remain under the authorised site controller and Tesla software unless a separate approved control design says otherwise.1
    Can monitoring alter emergency procedures?
    No. Emergency response, isolation, fire command and service access must follow Tesla and the approved site emergency plan.2

    Sources

    1. Megapack product page (opens in a new tab) Tesla
    2. Industrial Lithium-Ion Battery Emergency Response Guide, revision 2.8 (opens in a new tab) (PDF) Tesla

    Further reading

    Product names and trademarks belong to their owners. Publication does not imply endorsement or a commercial relationship.