Powerwall 3 combines a 13.5 kWh battery with a solar inverter, so for a new system there’s no separate inverter to buy. It can back up the home in an outage and you can add units later.
Key facts
| Feature | Detail |
|---|---|
| Energy capacity | 13.5 kWh |
| Power | Up to 10 kW on grid and in backup, depending on local conditions |
| Solar inverter | Built in: 3 solar inputs with MPPTs, 97.5% solar-to-grid efficiency |
| Backup | Quick backup transition; 185 A motor start |
| Scalable | Up to 4 units |
| Operating temperature | -20 °C to 50 °C |
| Weight | 130 kg |
| Warranty | 10 years |
Models
| Model | Capacity | Power | Notes |
|---|---|---|---|
| Powerwall 3 | 13.5 kWh | Up to 10 kW | Integrated solar inverter |
Warranty
Tesla’s Australian page lists a 10-year warranty. Ask for the warranty document, which sets out how much capacity it keeps.
Support in Australia
Sold and installed in Australia through Tesla’s certified installers.
Strengths
- Solar inverter built in: one box for a new system
- Up to 10 kW, enough to run most of a home
- Strong backup: quick transition and 185 A motor start
Watch for
- One size (13.5 kWh per unit); you add whole units
- If your existing solar inverter is fine, you’re paying for a second one
Our take
For a new solar and battery system, Powerwall 3 keeps things simple: one unit does the inverter and battery, with strong output in a blackout. If you already have solar, compare it with an AC-coupled battery.
Before you buy
- For the federal battery discount, the exact model must be on the Clean Energy Council’s approved battery list. Ask your installer to confirm it.
- Work out the discount for your battery’s size with our battery rebate calculator.
- Compare quotes from accredited battery retailers near you, and check their accreditation.
Sources
Specifications and warranties change. We use the manufacturer’s own documents and say when one isn’t published; check the current version with your installer before you sign.