Quick comparison table
| Brand / Model | Capacity | Power (cont.) | Chemistry | Warranty | Price (after rebate) | Best For |
|---|---|---|---|---|---|---|
| Tesla Powerwall 3 | 13.5kWh | 11.5kW | LFP | 10 yr | $11,500–$13,500 | Premium, whole-home backup |
| BYD Battery-Box HVS | 10.24kWh | 5.0kW | LFP | 10 yr | $7,500–$9,000 | Best value, modular |
| Sungrow SBR HV | 9.6kWh | 5.0kW | LFP | 10 yr | $7,000–$8,500 | Budget-conscious buyers |
| Sigenergy SigenStor | 10kWh | 5.0kW | LFP | 10 yr | $7,200–$8,800 | New installs, V2H ready |
| Alpha-ESS Storion | 10.3kWh | 5.0kW | LFP | 10 yr | $7,000–$8,200 | Solar integration |
| Enphase IQ Battery 10T | 10.08kWh | 3.84kW | LFP | 15 yr | $10,000–$12,500 | Long-term reliability |
Detailed brand reviews
The Powerwall 3 integrates a solar inverter and battery into a single unit — no separate inverter needed. High continuous power (11.5kW) means it can run almost anything in your home during an outage.
Pros
- Highest power output in its class
- Seamless whole-home backup
- Excellent app and monitoring
- Premium brand recognition
Cons
- Highest price on the market
- Requires Tesla-certified installer
- Wait times can be 4–8 weeks
BYD is the world's largest battery manufacturer. The Battery-Box HVS is modular — start at 5.12kWh and expand as needed. Excellent value, widely available, with a strong track record in Australia.
Pros
- Modular — expand later
- Excellent price-to-capacity ratio
- Wide installer availability
- Proven reliability globally
Cons
- Requires compatible hybrid inverter
- Lower power output than Powerwall 3
Sungrow is the world's largest solar inverter manufacturer. The SBR HV leverages that expertise — tight inverter integration, strong performance and excellent warranty support from a company with major Australian operations.
Pros
- Lowest price point in class
- Best-in-class Sungrow inverter pairing
- Strong local support network
Cons
- Works best with Sungrow inverters
- Less brand recognition
Sigenergy is a newer entrant making serious waves. Vehicle-to-Home (V2H) capability future-proofs your home for bidirectional EV charging — if you drive an EV or plan to, this is worth considering.
Pros
- V2H / V2G ready
- All-in-one design option
- Strong installer training in AU
Cons
- Newer brand, shorter track record
- V2H requires compatible EV