Tesla Powerwall 3 Expansion (TESLA-1807000-20-B)

The Tesla Powerwall 3 Expansion adds 13.5 kWh of storage per unit and is intended only for use with Tesla Powerwall 3 systems. It gives installers a flexible way to scale storage without changing the core system design, while the indoor and outdoor rating supports a wider range of UK installation sites. Floor or wall mounting options help suit the available space, and stacked floor mounting can support a tidy multi-unit layout. For the customer, this means more storage capacity and a system that can grow with demand.

• 13.5 kWh battery expansion for Tesla Powerwall 3 systems
• Indoor and outdoor rated enclosure for flexible siting
• Floor or wall mounting options to suit the installation space
• Parallel-connected expansion for seamless system integration
• Stacking support when floor mounted for a compact layout

Tesla Expansion Harness 0.5m (TESLA-1875157-05-D)

The Tesla Expansion Harness 0.5m provides the connection needed to integrate Tesla energy storage components cleanly and securely. Its shorter 0.5 metre length helps keep installations tidy, reducing excess cable and making the finished system easier to present and maintain. For installers, this can simplify fitting and reduce the risk of unnecessary routing issues. For the end user, it supports a reliable, well-organised energy storage installation built for consistent performance.

• Designed for secure connection between Tesla energy storage components
• 0.5 metre length helps reduce cable clutter
• Supports straightforward and professional installation
• Built to deliver consistent electrical connectivity
• Helps maintain a tidy system layout

Tesla Accessories PW3 - Multi PW Stacking Kit (TESLA-1978070-00-B)

The Tesla Accessories PW3 - Multi PW Stacking Kit is included to support safe and stable stacking of multiple Tesla Powerwall 3 units. It helps installers create a compact, well-aligned installation that makes best use of available floor space. This is particularly useful when expanding storage in homes or commercial premises where a clean, scalable layout matters. For the system owner, it supports future capacity growth while helping preserve a professional finish.

• Supports safe stacking of multiple Tesla Powerwall 3 units
• Helps create a compact installation layout
• Designed to work with Tesla Powerwall 3 systems
• Improves scalability for larger storage projects
• Supports a neat, professional finish

Simpler Expansion for Installers

This bundle brings together the key parts needed for a Powerwall 3 battery expansion, helping reduce time spent sourcing compatible accessories. The matching harness and stacking kit support a smoother installation process, with fewer on-site decisions and a cleaner final result.

More Storage Capacity for System Owners

By adding Tesla Powerwall 3 Expansion capacity, the bundle helps customers store more energy from solar or off-peak charging. That can improve self-consumption, reduce reliance on the grid and give greater flexibility as energy use increases.

Flexible Installation Options

With indoor and outdoor suitability, floor or wall mounting, and stacking support, the bundle gives installers more freedom to match the system to the site. That makes it easier to work around space constraints while still delivering a tidy, scalable installation.

Why Choose This Bundle?

Choose the Tesla Powerwall 3 Expansion 1x Battery Only Kit - Stacked when you need a compatible, installer-friendly way to expand a Tesla Powerwall 3 system. It combines the battery, harness and stacking hardware required for a structured installation, helping you save time, keep cable runs neat and deliver a system that is ready for future growth. For customers, it offers more storage capacity in a compact and well-integrated format.