How do I compare home batteries effectively?

Focus on these key factors: usable capacity (kWh), warranty period and terms, round-trip efficiency, backup capability, VPP compatibility (for Synergy Battery Rewards), and total installed cost including rebates. Don't just compare sticker prices - consider $/kWh and long-term value.

What is the best battery size for a Perth home?

Most Perth homes do well with 10-13kWh batteries. This captures excess solar from a typical 6.6kW system and provides meaningful evening power. Larger homes (>30kWh daily usage) may benefit from 15-20kWh systems. Consider your actual usage patterns and solar generation.

Are all batteries CEC approved?

Only CEC-approved batteries are eligible for federal STCs (rebates) in Australia. Our comparison tool only shows CEC-approved products. However, approval status can change - always verify current status before purchase. Some products may be 'expired' on the CEC list.

What warranty should I look for in a home battery?

Look for minimum 10-year warranty with throughput guarantee (e.g., 'warranted for 10 years or 27.5MWh throughput'). Premium brands like Tesla and BYD offer 10-15 year warranties. Ensure the manufacturer has Australian support and a track record of honoring warranties.

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Pick up to 4 batteries, inverters, or panels and see specs, pricing, and compatibility lined up in one view. No signup, no installer spam — just the data you need to make a confident call.

Updated: 15 May 2026 · Independent · Free