Tesla Powerwall 3 Expansion

SKU: TESLA-1807000-20-B

1807000-20-B
NEW

The Tesla Powerwall 3 Expansion is the plug‑and‑play way to boost storage capacity on any existing Powerwall 3 install without adding inverters, breakers or extra commissioning steps. Each expansion cabinet delivers an additional 13.5 kWh of usable energy, letting installers scale a single‑battery job to small‑commercial sizing. Simply connect the additional harness and mount, the system auto‑syncs—no firmware flashing or design recalculation required.

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  • Manufacturer Tesla Energy

  • Indoor or outdoor mounting: IP67 / NEMA 3R enclosure thrives from –20 °C to 50 °C and up to 100 % humidity—ideal for UK meter cupboards and plant rooms. ​
  • Slim footprint: 1105 × 609 × 168 mm cabinet is either stacked behind or wall mounted beside the Powerwall​.
  • Rapid installation: a pre‑terminated parallel harness and Tesla’s QR‑code wizard recognise serial numbers and balance pack voltages automatically.
  • Single ecosystem: seamless integration with the Tesla App keeps monitoring, alerts and firmware updates under one dashboard, cutting service calls.
  • Expansion - 3 expansion batteries can be added to a single Powerwall 3. 
     

Technical highlights:

  • Nominal battery energy: 13.5 kWh per expansion
  • Weight: 118.5 kg.
  • Certifications: UL 1973, UL 9540 and Pollution Degree 3 compliance for insurance and DNO peace of mind. ​
  • Mounting: floor or wall. Glass door required for wall mounting*

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