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Product specifications, pricing, and availability are subject to change without notice. We make no warranties regarding product performance, longevity, or suitability for your specific needs.
Always verify specifications with the manufacturer and installer before purchase. Warranty terms are set by manufacturers and may have conditions not disclosed here. Battery performance degrades over time.
APX S2 series
Growatt APX S2 — 12 CEC-listed configurations from 4.5–30 kWh usable capacity.
12 CEC-resolvable configurations.
| Usable capacity | Power | Weight | |
|---|---|---|---|
| 4.5 kWhNo WA rebate under 5 kWh | — | — | Full specs |
| 5 kWh | — | — | Full specs |
| 9 kWh | — | — | Full specs |
| 10 kWhClosest fit to WA rebate cap | — | — | Full specs |
| 13.5 kWh | — | — | Full specs |
| 15 kWh | — | — | Full specs |
| 18 kWh | — | — | Full specs |
| 20 kWh | — | — | Full specs |
| 22.5 kWh | — | — | Full specs |
| 25 kWh | — | — | Full specs |
| 27 kWh | — | — | Full specs |
| 30 kWh | — | — | Full specs |
The WA Battery Scheme pays $130 per kWh on the first 10 kWh, capped at $1,300. Capacities under 5 kWh receive nothing, and every capacity from 10 kWh up receives the same $1,300 — a larger battery does not earn a larger rebate. Whether a particular product qualifies also depends on it being Synergy-approved.
Figures come from each configuration's own CEC listing. SBP doesn't hold verified per-configuration pricing for this series — get an installed quote for exact pricing.
Chemistry
LFP
Round-trip efficiency
92.0%
Depth of discharge
90%
Warranty period
10 years
The Growatt ARK HV series targets cost-conscious buyers who want modular LFP storage with usable capacity scaling. It uses 2.56kWh modules stacked from 2-10 units, covering 5-25kWh, which is enough for most residential applications. The high-voltage design (180-450V) pairs with Growatt's SPH or MIN hybrid inverter series. Growatt is a top-10 global inverter manufacturer, and the scale supports competitive pricing. Monitoring runs through ShinePhone and ShineServer. The interface covers basic needs, although it receives mixed feedback compared to higher-priced alternatives. Recent app updates have improved usability. Growatt has had a recall in Australia: the SPH series EPS port issue in 2023 affected some installations. Growatt ran a remediation programme. Proper installation and current firmware matter. For Perth installations, the ARK HV is an accessible option for cost-focused buyers who are comfortable trading some brand recognition for lower cost.
Country of origin
Unknown
Australian support
Not verified
Quotes come from verified Perth installers. Compare this series against your existing quote, or email us with specific questions.