The three most-installed home batteries in WA compared on price, warranty, backup power and rebate eligibility.
The contenders
- Tesla Powerwall 3 — 13.5 kWh, integrated inverter, 11.5 kW backup
- Sungrow SBR — modular 9.6–25.6 kWh, hybrid with SH-RS inverter
- BYD HVM — modular 11.0–22.1 kWh, works with Fronius/GoodWe/Sungrow inverters
Head-to-head
| Powerwall 3 | Sungrow SBR 12.8 | BYD HVM 11.0 | |
|---|---|---|---|
| Usable capacity | 13.5 kWh | 12.8 kWh | 11.0 kWh |
| Continuous backup | 11.5 kW | 10 kW | 8 kW |
| Warranty | 10 yr / 70% | 10 yr / 60% | 10 yr / 60% |
| Chemistry | LFP | LFP | LFP |
| WA rebate eligible | ✅ | ✅ | ✅ |
| Installed price | ~$15,900 | ~$13,500 | ~$12,900 |
Which one wins?
- Best for whole-home backup: Powerwall 3 — highest continuous output handles ducted air-con starts.
- Best value per kWh: BYD HVM — cheapest per usable kWh, modular scaling.
- Best for expandability: Sungrow SBR — snap in extra modules later as your EV load grows.
Our take
For most Perth families a Powerwall 3 is the safest long-term buy. For larger homes or off-grid ambitions we usually recommend a Sungrow stack because you can add capacity without replacing the inverter.
#battery#tesla#sungrow#byd#comparison
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