Tesla Powerwall 2: A Comprehensive Review
The Tesla Powerwall 2 remains one of the most advanced and in-demand lithium battery systems for homes in Australia. Since its 2016 debut, it has undergone significant refinements—especially in availability, firmware, and performance—cementing its status as a market leader. While Tesla has introduced the Powerwall Plus, the Powerwall 2 continues to be the go-to choice for homeowners prioritizing performance, value, and reliability.
Tesla Powerwall 2 Main Features and Specifications
| Usable Capacity | 13.5kWh |
| Power Output | 5kW continuous / 7kW peak |
| Inverter | Integrated AC inverter (AC-coupled) |
| Cooling System | Advanced liquid thermal management |
| Operating Temp | -20°C to +50°C |
| Warranty | 10 years (70% capacity retention) |
| Scalability | Stack up to 10 units per household |
| Design | Wall or floor mount, indoor/outdoor |
| Price | ~$11,900 AUD + ~$1,800 for Backup Gateway |
Almost 6 years ago, Tesla surprised the solar market by introducing the first generation Powerwall 6. Since then, Tesla Powerwall Plus is the latest addition to the Tesla home batteries series.
How does a Tesla Powerwall 2 work?‘
Solar Energy Collection: Solar panels generate DC electricity from sunlight.
Energy Conversion: A solar inverter converts DC to AC for household use.
Battery Charging: Excess AC energy is routed to Powerwall’s inverter and stored as DC in the battery.
On-Demand Use: Powerwall automatically supplies stored energy as AC when needed—during grid outages, cloudy days, or peak tariff times.
Key Features of the Tesla Powerwall 2
AC/DC Built-In Inverter:
Tesla Powerwall 2 incorporates an AC/DC inverter. For this reason, it reduces installation costs and complements a solar inverter.
Tesla Powerwall 2 features a built-in AC/DC inverter, leading to cost savings in hybrid solar inverter installation. Furthermore, its substantial storage capacity enables prolonged power generation. However, merely connecting Powerwall 2 to solar panels is insufficient; an inverter is still required for proper functionality.
Stacking Capability:
You can link multiple Powerwalls to enhance energy storage capacity, making it ideal for larger buildings.
This advantage allows you to stack Powerwalls to achieve additional capacity. Unlike other batteries, Tesla batteries can be linked together to create a combined storage space for your energy. While it involves higher costs, it is important to realise that it serves as an effective method to augment the capacity of sizable structures.
Liquid Cooling System:
Tesla is equipped with a liquid cooling system, enabling it to perform in extreme conditions, ranging from -20 to +50 degrees Celsius.
10-Year Warranty:
Tesla provides a 10-year warranty for the Powerwall, covering unlimited charge cycles for a decade with energy retention of 70%.
Charge Cycle:
The Powerwall’s charge cycle duration is determined by your usage. Minimal usage results in a lifespan of around 12-15 hours. Conversely, higher energy consumption will reduce it to 4-5 hours. However, daily charging when the sun rises mitigates any impact on its lifespan.
Flexible Design:
Mountable on walls or floors, Powerwall 2 offers flexible installation options.
User Reviews and Verdict:
- Warranty and Pricing: With a 10-year warranty and competitive price per kW, Tesla stands out in the market.
- Positive Reception: Tesla Powerwall 2 garners positive reviews and is considered a performance leader.
Off-Grid Possibilities:
Can you go off Grid with a Powerwall?
Yes, technically, you can. While relying on just one Powerwall might pose challenges, linking several together resolves the issue. However, going off the grid is advised due to its environmental impact. Going off-grid means any surplus energy is wasted.
Tesla Powewall 2 Reviews
Tesla Powerwall 2 garners positive reviews overall. Currently, no other brand can outperform the Tesla Powerwall. In terms of warranty, Tesla falls in the middle with a 10-year offer. Additionally, Tesla Powerwall boasts an attractive price per kW compared to other brands.
Final Verdict
According to our experts, Tesla Powerwall 2 ranks among the finest batteries in the solar system realm. It’s a prime recommendation for homeowners seeking to cut costs and break free from the grid.
To delve deeper into Tesla Powerwall 2 according to your needs, reach out to Solar Air Energy‘s team.
