--- title: "Deye SUN-6K-SG03LP1-EU Hybrid Inverter: Specs & Datasheet | ComparePV" description: "Deye SUN-6K-SG03LP1-EU 6 kW hybrid inverter. Specs: 96.5% European efficiency, 2 MPPT, 500 V max DC input, 25.0 kg, 5 yrs warranty." source: "https://comparepv.com/inverter/deye-sun-6k-sg03lp1-eu" updated: 2026-01-17 --- # Deye SUN-6K-SG03LP1-EU ## Identity - **Manufacturer:** Deye - **Model:** SUN-6K-SG03LP1-EU - **Series:** SG03LP1-EU - **Rated AC power:** 6 kW - **Type:** Hybrid - **Phases:** Single-phase - **Battery port:** yes ## How it compares Compared against 362 inverters from 3 to 6 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 96.5% | 97.2% | Weak - bottom 10% | 220 | | MPPT trackers | 2 | 2 | Typical | 13 | | Max DC input voltage | 500 V | 600 V | Weak - bottom 19% | 237 | | Weight per kW | 4.2 | 3.3 | Typical | 234 | | Warranty | 5 yrs | 5 yrs | Typical | 34 | ## Specification ### AC output - **Rated AC power:** 6 kW - **Max AC power:** 6.60 kW - **Max apparent power:** 6.60 kVA - **Phases:** Single-phase - **Nominal AC voltage:** 230 V - **Max AC current:** 30.0 A - **Grid frequency:** 50 Hz - **Power factor:** 0.8 leading to 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 7.80 kW - **Max DC voltage:** 500 V - **MPPT voltage range:** 150 to 425 V - **Start-up voltage:** 125 V - **MPPT trackers:** 2 - **Max input current per MPPT:** 13.0 A - **Max short-circuit current per MPPT:** 17.0 A ### Efficiency - **European efficiency:** 96.5 % - **Max efficiency:** 97.6 % ### Battery - **Battery port:** Yes - **Battery voltage:** 40–60 - **Grid-forming:** Yes ### Physical - **Dimensions:** 580 × 330 × 232 mm - **Weight:** 25.0 kg - **Enclosure:** IP65 - **Cooling:** forced-air - **Noise:** 30 dB - **Operating temperature:** -40 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 2000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Bluetooth, Display - **Protocols:** RS485, RS232, CAN, GPRS, WiFi, Bluetooth, 4G (optional), LAN (optional) - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Warranty:** 5 years - **Certifications:** IEC 61727, IEC 62116, CEI 0-21, EN 50549, NRS 097, RD 140, UNE 217002, OVE-Richtlinie R25, G99, VDE-AR-N 4105, IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4, IEC/EN 62109-1, IEC/EN 62109-2 ### Pros - **2 independent MPPT controllers (DC voltage range: 150-425 V)** - The inverter is equipped with two MPPT trackers with a voltage range of 150-425 V DC and a tracking efficiency of 99.9%, which allows for independent optimization of strings on different roof sections or in partially shaded areas, without losses resulting from connecting mismatched strings to a single operating point. - **European efficiency: 96.5%, maximum 97.6%** - The European efficiency of 96.5% places the series above the typical median for mid-range hybrid inverters (~95-96%), which, under real-world solar irradiation conditions in Poland, translates into a higher annual yield than would be indicated solely by peak performance data. - **Support for 48 V batteries with BMS (CAN/RS485)** - The 40-60 V DC battery input with a charging/discharging current of up to 120 A, along with BMS communication support via CAN or RS485, ensures compatibility with the extensive LiFePO₄/NMC battery ecosystem (including Pylontech, CATL, and BYD), without the need for expensive high-voltage modules. - **EPS - emergency power supply with a switching time of less than 20 ms** - The EPS (Emergency Power Supply) function provides a switchover to battery power within 20 ms, which is within the tolerance of sensitive devices (e.g., routers, NAS, refrigerators), eliminating the need for a separate UPS in many home installations. - **Monitoring of WiFi, LAN, and air conditioning (AC)** - Built-in Wi-Fi and Ethernet enable monitoring of production and consumption through the SolarmanBusiness/Smart application without the need for additional gateways. Support for the AC (CT/SmartMeter) meter allows for direct zero-export functionality from the inverter, without the need for external controllers. ### Cons - **Active fan-based cooling** - The SG03LP1 series uses forced-air cooling, while its successor, the SG04LP1, has switched to a fully passive radiator. The fan is a component that is subject to wear and tear (typical MTBF ~30,000 hours), generates noise of approximately 35-40 dB under full load, and can become a source of failure after 8-12 years of operation. - **Maximum PV voltage limited to 500 V DC** - A limit of 500 V DC on the PV input (with Voc up to 500 V) restricts the maximum string length to approximately 10-11 panels in series, typical for 182 mm modules. Competitive inverters in this class (e.g., Growatt SPH, Solis S6) allow for 600 V DC, which provides greater design flexibility, especially with high-voltage modules (>60 V Voc). - **Common issues encountered during firmware updates** - Reports on the DIY Solar Power Forum and elektroda.pl forums have documented instances of loss of communication with the BMS (Battery Management System) and unintended changes in operating parameters after firmware updates (reported in 2023-2024). This issue is particularly prevalent when integrating with energy storage systems from other manufacturers, where restoring the correct configuration required intervention from an installer. ## About this series The Deye SG03LP1-EU series are **single-phase hybrid inverters** for installations designed not only to feed energy back into the grid but also to effectively work with energy storage systems. In practice, this means flexible operational scenarios - self-consumption, backup power supply, and prioritizing energy sources in homes or small businesses. A major advantage are the **2 independent MPPTs**, which make it easier to utilize panels spread across different roof sections or partially shaded ones - the inverter can independently optimize the performance of strings, reducing energy losses. High **European efficiency** translates into significantly better energy production under typical operating conditions in Poland, not just in laboratory tests. Monitoring is convenient thanks to WiFi and Ethernet communication, along with an app for monitoring production and consumption. The series is **compatible with low-voltage storage systems** and typically offers a 5-year warranty with the possibility of extension, while a complete set of certificates facilitates trouble-free installation in European residential and commercial setups. ## Questions ### Which energy storage systems are compatible with the Deye SG03LP1-EU inverter? The SG03LP1-EU series is designed for use with low-voltage energy storage systems (40-60V range), supporting LiFePO4, AGM, and GEL technologies. Deye provides a list of certified batteries compatible with this series, including popular 48V LiFePO4 battery packs. Before purchasing, it is advisable to check if the specific model of the energy storage system is listed on the manufacturer's compatibility list to ensure proper communication with the BMS. ### What is the warranty on the Deye SG03LP1-EU inverters, and is it possible to extend it? The standard warranty for the SG03LP1-EU series is 5 years. It is possible to extend this to 10 years, which is available from authorized Deye distributors in Poland. An extended warranty is a significant factor when choosing a hybrid inverter, which is expected to operate for a minimum of 15-20 years in a prosumer installation. ### Will the Deye SG03LP1-EU inverter provide power during a power outage? Yes, the SG03LP1-EU series features a backup/off-grid power function. In the event of a power outage, the inverter automatically switches to backup mode and supplies selected circuits from the energy storage system. The switching time is very short, which practically means no interruption for most household appliances. The peak off-grid power is twice the rated power for 10 seconds, allowing for the start-up of devices with high starting power requirements. ### Why does the SG03LP1-EU series have 2 independent MPPTs, and what practical benefits does this offer? Two independent MPPT systems (each with a current up to 13A and a PV voltage up to 500V) allow you to connect panels from two different roof sections or with different orientations and inclines. The inverter monitors the maximum power point of each string individually, so shading or poor exposure of one group of panels does not reduce the output from the other. This is particularly important for roofs with chimneys, dormer windows, or limited space on one side. ### What features does the Deye SG03LP1-EU series offer, and which model is best suited for a home? The series includes three power options: 3.6 kW, 5 kW, and 6 kW - all single-phase. For a typical single-family home with a 5-10 kWp installation and energy storage system, the 5K or 6K model is most often chosen, providing a power reserve for expansion. The 3.6K model is suitable for smaller installations or when the primary goal is self-consumption without large peak loads. ### How to monitor the operation of the Deye SG03LP1-EU inverter, and is an additional gateway necessary? The SG03LP1-EU series features an integrated Wi-Fi module and Ethernet port, eliminating the need for an additional communication gateway. Once connected to a home network, the inverter is visible in the Deye (SolarmanPV) mobile app, which displays production, consumption, battery status, and energy flows in real-time. An RS485 interface is also available for integration with building management systems (BMS/SCADA). ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/datasheet-sun-3-6-6k-sg03lp1-240722-en-1ffac3db6d47.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [SolarEdge SE6000H](https://comparepv.com/inverter/solaredge-se6000h) | 6 kW | 99.0% | | 12.0 kg | +2.5 pp efficiency, 13.0 kg lighter | | [Growatt MOD 6000TL3-HU](https://comparepv.com/inverter/growatt-mod-6000tl3-hu) | 6 kW | 97.8% | 2 | 19.0 kg | +1.3 pp efficiency, 6.0 kg lighter | | [Huawei SUN2000-6KTL-L1](https://comparepv.com/inverter/huawei-sun2000-6ktl-l1) | 6 kW | 97.8% | 2 | 12.0 kg | +1.3 pp efficiency, 13.0 kg lighter | | [Huawei SUN2000-6KTL-M1](https://comparepv.com/inverter/huawei-sun2000-6ktl-m1) | 6 kW | 97.7% | 2 | 17.0 kg | +1.2 pp efficiency, 8.0 kg lighter | | [Huawei SUN2000-6KTL-M1 (High current version)](https://comparepv.com/inverter/huawei-sun2000-6ktl-m1-high-current-version) | 6 kW | 97.7% | 2 | 17.0 kg | +1.2 pp efficiency, 8.0 kg lighter | | [Huawei SUN2000-6K-MAP0](https://comparepv.com/inverter/huawei-sun2000-6k-map0) | 6 kW | 97.7% | 2 | 21.0 kg | +1.2 pp efficiency, 4.0 kg lighter | | [Fronius Symo GEN24 Plus 6.0](https://comparepv.com/inverter/fronius-international-fronius-symo-gen24-plus-6-0) | 6 kW | 97.7% | 2 | 23.4 kg | +1.2 pp efficiency, 1.6 kg lighter | | [Ginlong Solis RHI-3P6K-HVES-5G](https://comparepv.com/inverter/ginlong-solis-rhi-3p6k-hves-5g) | 6 kW | 97.7% | 2 | 25.1 kg | +1.2 pp efficiency | --- Source: https://comparepv.com/inverter/deye-sun-6k-sg03lp1-eu