• Full-service wholesaler
  • Direct advice from our specialists
  • Unique quality checks on our products

Due to increasing demand, we cannot guarantee that your order will be delivered the next working day. Please check your confirmation for the final delivery date.

Same-day collection is unfortunately not possible.

Tesla | Powerwall 3X Expansion | 13.5kWh

  • Tesla
  • 1807000-20-B | Battery Expansion | Max. 3 on Powerwall 3
Article number:TES-POWERWALL-3X
Tesla | Powerwall 3X Expansion | 13.5kWh

Product information

Tesla Powerwall 3X Expansion | 13.5kWh

The Tesla Powerwall 3 Expansion Pack is an additional battery module designed to increase the storage capacity of an existing Powerwall 3 system. It offers a cost-effective way to store more energy without needing a full second Powerwall unit with an integrated inverter.

Key features

  • Additional capacity: Each expansion unit adds 13.5 kWh of usable energy storage, the same capacity as the main unit.
  • Scalability: You can connect up to three expansion packs to a single Powerwall 3, bringing total storage capacity up to 54 kWh.
  • No extra inverter: The expansion packs are DC-coupled and use the inverter and control system of the main unit. This makes them more affordable and easier to install than a full additional Powerwall.
  • Flexible installation: Expansion units can be wall-mounted next to the main unit or stacked on the floor (behind the main unit).
  • Seamless integration: The entire system is managed via the Tesla app and comes with the same standard 10-year warranty as the Powerwall 3.

The expansion packs are only compatible with the Powerwall 3 and cannot be used with the Powerwall 2 or third-party batteries. See the storage folder for additional components required to connect this to your Powerwall 3.

Please note! See below for required components:

(Additional Powerwall 3 Expansion battery unit: maximum per location: 3 units on a single Powerwall)

  • Floor-mounted back-to-back, incl. expansion wiring harness: C-TES-PW3X-B2B capacity 13.5kWh
  • Wall-mounted side-by-side, incl. expansion wiring harness*:
  • A. Includes 0.5m wiring harness: C-TES-PW3X-WALL-0.5
  • B. Includes 2m wiring harness: C-TES-PW3X-WALL-2.0
  • C. Includes 4m wiring harness: C-TES-PW3X-WALL-4.0

See composition contents for additional items needed alongside the expansion unit.

Technical Specifications

  • Capacity: 13.5 kWh
  • 5 kW
  • IP55
  • Dimensions: 1105 × 609 × 168 mm
  • Weight: 118.5 kg
  • Warranty: 10 years

Specifications

Ambient temperature
-20-50
Allowable relative humidity
0-100
Width
609
Depth
168
Nominal battery capacity
13.5

Documentation