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Understanding inverter compatibility is crucial for optimal battery performance. Different inverter models support different charge/discharge rates depending on battery configuration.
The maximum charge rate determines how quickly your battery can store excess solar energy. A higher charge rate means less solar energy wasted during peak production hours.
The maximum discharge rate determines how much power your battery can deliver to your home. This affects which appliances you can run simultaneously from battery power.
During a blackout, backup discharge rates may be lower than normal operation. This is important for sizing your system to support essential loads during outages.
Matching your inverter to your battery capacity ensures optimal performance. Undersized inverters limit charge/discharge rates, while oversized inverters add unnecessary cost.
| Configuration | Capacity | Max Charge | Max Discharge | Max Backup |
|---|---|---|---|---|
| 1x stack | 5kWh | 2.5 kW | 2.5 kW | 2.5 kW |
| 1x stack | 10/15kWh | 5 kW | 5 kW | 5 kW |
| 2x stacks | 5kWh + 10/15kWh | 5 kW | 5 kW | 5 kW |
| 2x stacks | 10/15kWh | 5 kW | 5 kW | 5 kW |
| Configuration | Capacity | Max Charge | Max Discharge | Max Backup |
|---|---|---|---|---|
| 1x stack | 5kWh | 2.5 kW | 2.5 kW | 2.5 kW |
| 1x stack | 10/15kWh | 5 kW | 5 kW | 5 kW |
| 2x stacks | 5kWh + 10/15kWh | 6 kW | 6 kW | 5 kW |
| 2x stacks | 10/15kWh | 6 kW | 6 kW | 5 kW |
| Configuration | Capacity | Max Charge | Max Discharge | Max Backup |
|---|---|---|---|---|
| 1x stack | 5kWh | 2.5 kW | 2.5 kW | 2.5 kW |
| 1x stack | 10/15kWh | 5 kW | 5 kW | 5 kW |
| 2x stacks | 5kWh + 10/15kWh | 5.75 kW | 5.75 kW | 7.5 kW |
| 2x stacks | 10/15kWh | 5.1 kW | 5.1 kW | 10 kW |
* The iStore 10kW 1P has a maximum charge rate of 5kWh
| Configuration | Capacity | Max Charge | Max Discharge | Max Backup |
|---|---|---|---|---|
| 1x stack | 5kWh | 2.5 kW | 2.5 kW | 2.5 kW |
| 1x stack | 10/15kWh | 5 kW | 5 kW | 3.3 kW |
| 2x stacks | 5kWh + 10/15kWh | 5 kW | 5 kW | 3.3 kW |
| 2x stacks | 10/15kWh | 5 kW | 5 kW | 3.3 kW |
| Configuration | Capacity | Max Charge | Max Discharge | Max Backup |
|---|---|---|---|---|
| 1x stack | 5kWh | 2.5 kW | 2.5 kW | 2.5 kW |
| 1x stack | 10/15kWh | 5 kW | 5 kW | 3.3 kW |
| 2x stacks | 5kWh + 10/15kWh | 6 kW | 6 kW | 3.3 kW |
| 2x stacks | 10/15kWh | 6 kW | 6 kW | 3.3 kW |
| Configuration | Capacity | Max Charge | Max Discharge | Max Backup |
|---|---|---|---|---|
| 1x stack | 5kWh | 2.5 kW | 2.5 kW | 2.5 kW |
| 1x stack | 10/15kWh | 5 kW | 5 kW | 5 kW |
| 2x stacks | 5kWh + 10/15kWh | 7.5 kW | 7.5 kW | 7.5 kW |
| 2x stacks | 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| 3x stacks | 5kWh + 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| 3x stacks | 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| 4x stacks | 5kWh + 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| 4x stacks | 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| Configuration | Capacity | Max Charge | Max Discharge | Max Backup |
|---|---|---|---|---|
| 1x stack | 5kWh | 2.5 kW | 2.5 kW | 2.5 kW |
| 1x stack | 10/15kWh | 5 kW | 5 kW | 5 kW |
| 2x stacks | 5kWh + 10/15kWh | 7.5 kW | 7.5 kW | 7.5 kW |
| 2x stacks | 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| 3x stacks | 5kWh + 10/15kWh | 12.5 kW | 12.5 kW | 8.3 kW |
| 3x stacks | 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| 4x stacks | 5kWh + 10/15kWh | 15 kW | 15 kW | 8.3 kW |
| 4x stacks | 10/15kWh | 15 kW | 15 kW | 8.3 kW |
| Configuration | Capacity | Max Charge | Max Discharge | Max Backup |
|---|---|---|---|---|
| 1x stack | 5kWh | 2.5 kW | 2.5 kW | 2.5 kW |
| 1x stack | 10/15kWh | 5 kW | 5 kW | 5 kW |
| 2x stacks | 5kWh + 10/15kWh | 7.5 kW | 7.5 kW | 7.5 kW |
| 2x stacks | 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| 3x stacks | 5kWh + 10/15kWh | 12.5 kW | 12.5 kW | 8.3 kW |
| 3x stacks | 10/15kWh | 10 kW | 10 kW | 8.3 kW |
| 4x stacks | 5kWh + 10/15kWh | 17.5 kW | 17.5 kW | 8.3 kW |
| 4x stacks | 10/15kWh | 20 kW | 20 kW | 8.3 kW |
Understanding Power Ratings:
* DC charge/discharge power varies from AC power due to inverter efficiency. Always consult with your installer for specific system design.
High Solar Production: Perth's excellent solar conditions mean your battery will often charge at maximum rate during summer. Ensure your inverter can handle peak solar production.
Air Conditioning Load: Perth homes often have high AC loads in summer. Choose an inverter with sufficient discharge capacity to power your AC from battery during peak tariff periods.
Network Constraints: Western Power has specific requirements for inverter settings. Your installer will configure export limits and grid support functions as required.
Future Expansion: If you plan to add more battery capacity later, choose an inverter that supports multiple battery modules or higher capacity configurations.