The Deye SG04LP1-AU series are single-phase hybrid inverters that combine grid connection with energy storage capability and backup mode operation. This dual functionality makes them suitable for both new installations and the modernization of existing photovoltaic systems via AC-coupling, enabling battery integration without a complete system overhaul. Their notable features include 2 independent MPPTs, which simplify the design of rooftop installations across two tilts or accommodate partial shading - each tracker optimizes the performance of its dedicated string, leading to more consistent energy yields throughout the day.
High European efficiency ensures genuinely good energy conversion under typical operating conditions, not just in laboratory settings, contributing to increased self-consumption and reduced losses. Monitoring is convenient, as the devices support remote management and network module communication, along with integration with monitoring platforms. The series is compatible with both lead-acid and lithium-ion batteries (with BMS support), and the IP65-rated enclosure facilitates mounting even outdoors.
Ranking
Specifications
Pros and cons
The SG04LP1-AU series has Australian CEC (Clean Energy Council) approval and meets the requirements of AS4777 for the Australian grid. The AU version is a dedicated variant - not a European model with a workaround - which makes it easier to obtain STCs (Small-scale Technology Certificates) and connect through a certified installer.
With peak efficiency of 97.6%, European efficiency of 97%, and MPPT efficiency of 99.9%, this series exceeds the median efficiency of single-phase hybrid systems in this price range (typical EU efficiency in this segment: 96-97%). This translates into a real reduction in losses over a year.
Two independent MPPT (150-425 V range) trackers enable the operation of two separate strings with different orientations or sun exposure, without cross-string losses. The native AC-coupling functionality allows for the addition of a battery storage system to an existing grid-tie installation without requiring any DC-side modifications.
Up to 16 SG04LP1-AU inverters can be connected in parallel (both on-grid and off-grid), allowing the system's power output to be expanded to approximately 96 kW on a single control infrastructure. Three units create a three-phase system - a rare flexibility in the segment of single-phase low-voltage (LV) hybrid systems.
Deye offers a 10-year warranty in Australia and New Zealand: full coverage (parts + labor + transportation) for the first 5 years, and parts-only coverage for the remaining 5 years. This 10-year warranty aligns with the market standard for mid-range hybrid systems, which typically range from 5 to 10 years.
The SG04LP1-AU only supports low-voltage (LV) batteries (nominal voltage of 48 V, with a range of 40-60 V). The absence of a high-voltage (HV) port (100-400 V) prevents direct compatibility with popular high-voltage batteries (such as BYD HVS, Pylontech Force H, and Dyness HV), which are becoming increasingly common in new Australian installations.
Deye does not operate its own service center in Australia. Warranty service is provided by local distributors/importers. Risk: Changes or bankruptcy of the importer could extend the time required for repairs or make it difficult to obtain replacement parts after the manufacturer's warranty period expires.
Alternatives
StorEdge AC Coupled Single Phase Inverter (HD‑Wave) – SE5000H / H5000SE
5 kW
99.0%
-
9.0 kg
+2.0 pp efficiency
About the SG04LP1-AU series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.