Tesla Powerwall 3 Expansion Pack
Tesla Powerwall 3 Expansion Pack – Now Available
Looking to get more out of your Tesla Powerwall 3? The new Powerwall 3 Expansion Pack gives Victorian homeowners the ability to expand their battery capacity and store even more of their solar energy. Whether you’re in Clyde North, Melbourne, or regional Gippsland, it’s the perfect upgrade for homes that want greater energy independence and reduced grid reliance.
The Powerwall 3 Expansion Pack is a modular add-on designed specifically for existing Powerwall 3 systems. It’s a battery-only unit, meaning it connects directly to your primary Powerwall 3 and uses its inverter for control and management.
This setup keeps costs down while significantly boosting your total storage capacity. Extra energy from your solar panels is automatically stored in the expansion battery — ready to power your home during the evening, high-tariff periods, or grid outages.
Why Choose the Tesla Powerwall 3 Expansion Pack
The Tesla Powerwall 3 Expansion Pack is the ultimate upgrade for homeowners who want to take their energy storage further. Designed specifically for the Powerwall 3, this add-on increases capacity by 13.5 kWh, giving you more stored solar power to use whenever you need it most.
Key Advantages
Expand your Powerwall 3 system with an additional 13.5 kWh of capacity—no second inverter required. The expansion pack integrates seamlessly with your existing setup for a straightforward, cost-efficient upgrade.
The expansion unit connects directly to your main Powerwall 3, managed automatically by the master inverter. Installation is simple, with all performance tracking available through the Tesla app.
You can add up to three expansion packs per Powerwall 3, scaling your storage to match growing household or business energy demands—ideal for homes planning to add electric vehicles or increase solar capacity.
Store more solar energy to run your home through the night or during grid outages. The expansion pack enhances your system’s ability to deliver uninterrupted power when it matters most.
Maximise your solar generation, reduce grid dependency, and shrink your carbon footprint—all while supporting Australia’s transition toward cleaner, more resilient energy systems.
Expansion Pack Specifications
- Dimensions: 1105 mm (H) × 609 mm (W) × 168 mm (D)
- Total Weight: 118.5 kg
- Weight of Powerwall 3 Expansion (without cover or bracket): 110 kg
- Mounting Options: Suitable for both wall-mounted and floor-mounted installations
- Stacking Capability: Supports stacking of up to three expansion units
- System Compatibility: Designed exclusively for use with the Tesla Powerwall 3
- Connection Method: Connects to the main Powerwall 3 via the Expansion Harness
How to Order Your Tesla Powerwall 3 Expansion Pack
Ready to upgrade your energy storage and take control of your home power? Here’s how to get started with Electrical Masters, your trusted Tesla Powerwall specialists across Melbourne’s southeast and Gippsland.
Step-by-Step Process
Request a Quote
Contact Electrical Masters for a personalised assessment and quote tailored to your energy needs and existing solar system.Check Available Rebates
Our team will guide you through the latest federal and Victorian battery incentives, ensuring you maximise every available saving.Book Your Installation
We’ll schedule a professional installation by our Clean Energy Council-accredited electricians, guaranteeing quality workmanship and full Tesla compliance.Enjoy Smarter Energy Control
Once installed, you can monitor your storage, solar generation, and savings directly from the Tesla app—all in real time.
Frequently Asked Questions
The Powerwall 3 Expansion Pack is a modular add-on that increases the storage capacity of an existing Tesla Powerwall 3 system by 13.5 kWh per unit. It lets homeowners store more solar energy for night-time use, high-tariff periods, or grid outages—all without needing a second inverter.
Yes. Each Tesla Powerwall 3 can support up to three Expansion Packs, allowing you to scale your total storage to more than 40 kWh. This flexibility makes it ideal for growing households, EV owners, or properties with larger energy demands.
No. The Expansion Pack is only compatible with the Tesla Powerwall 3 and cannot be paired with Powerwall 2 or earlier models. It’s designed to work seamlessly through the Powerwall 3’s integrated inverter and is monitored through the same Tesla app.
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