--- title: "IBC Solar ISolar SMG II 3.6KW Hybrid Inverter: Specs & Datasheet | ComparePV" description: "IBC Solar ISolar SMG II 3.6KW 3.6 kW hybrid inverter. Specs: 500 V max DC input, 9.0 kg." source: "https://comparepv.com/inverter/ibc-solar-isolar-smg-ii-3-6kw" updated: 2026-01-19 --- # IBC Solar ISolar SMG II 3.6KW ## Identity - **Manufacturer:** IBC Solar - **Model:** ISolar SMG II 3.6KW - **Series:** ISolar SMG II - **Rated AC power:** 3.6 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 | - | 97.2% | | | | MPPT trackers | - | 2 | | | | Max DC input voltage | 500 V | 600 V | Weak - bottom 19% | 237 | | Weight per kW | 2.5 | 3.3 | Typical | 96 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 3.6 kW - **Max apparent power:** 3.60 kVA - **Phases:** Single-phase - **Nominal AC voltage:** 230 V ### PV input - **Max DC input power:** 4.00 kW - **Max DC voltage:** 500 V - **MPPT voltage range:** 120 to 450 V ### Efficiency - **Max efficiency:** 96.0 % ### Battery - **Battery port:** Yes - **Max charge current:** 100.0 A - **Grid-forming:** Yes ### Physical - **Dimensions:** 482 × 290 × 113 mm - **Weight:** 9.0 kg - **Operating temperature:** -10 to 50 °C - **Max humidity:** 95 % ### Connectivity and protection - **Interfaces:** Wi-Fi, Display - **Protocols:** USB, RS232, Dry-contact, WiFi (optional), GPRS (optional) ### Pros - **Scalability Through Parallel Operation** - SMG II series models support parallel operation of up to 12 units (e.g., the 6.2KP), enabling a combined three-phase system capacity of up to ~74 kW. This sets the series apart from the majority of prosumer-grade off-grid inverters, which do not offer native parallel stacking. - **Native BMS Communication via RS485** - The series supports the RS485 protocol with widely used BMS brands - Pylontech, JK (Jikong), and Daly - without requiring protocol gateways. This is a significant advantage in hybrid systems built around LiFePO4 battery packs, where accurate data exchange between the inverter and BMS directly affects cell longevity. - **Built-In Wi-Fi With No Additional Accessories Required** - Select SMG II models (e.g., the -WIFI variants) ship with an integrated Wi-Fi module ready to use out of the box, eliminating the need to purchase external data loggers as required by, for example, SMA Sunny Island or older Victron product lines. This simplifies initial commissioning of system monitoring. - **Wide Power Range Within a Single Series** - The series spans models from 2 kW (12 V, small/mobile installations) to 11 kW (48 V), allowing a system designer to select the appropriate unit from the same product family - whether for a small vacation cabin or a full prosumer residential installation - without switching service platforms. - **Compatibility With LiFePO4 and Li-Ion Battery Chemistries** - The inverter includes built-in charge profiles tailored to both LiFePO4 and Li-ion chemistries, with overcharge protection, meeting the baseline requirement for integration with modern energy storage systems. The manufacturer confirms this functionality in the official User Manual (ManualsLib, rev. SMG II Series). ### Cons - **Unreliable RS485 Communication With BMS** - Multiple threads on DIY Solar Power Forum document non-functional or intermittent RS485 communication with Daly and JK BMS units (e.g., PB2A16S15P), despite the manufacturer's official compatibility claims. Resolving the issue typically requires manual protocol configuration or a firmware update, raising the barrier to entry for non-technical users. - **Poor MPPT Performance Under Low-Irradiance Conditions** - Users on DIY Solar Power Forum (thread: 'EASun SMG II Minimum PV voltage') report yields of approximately ~124 W from a string that delivered ~300 W on a comparable grid-tie inverter under overcast conditions - roughly 41% of expected output. This points to limitations in the MPPT controller at low DC input voltages, where the required start voltage ranges from approximately 120-250 V DC. - **Cooling Fan Runs Continuously** - Unlike inverters equipped with temperature-controlled variable-speed fans (e.g., Victron MultiPlus-II, Fronius Symo), the SMG II's cooling fan operates at all times. This produces constant background noise and accelerates bearing wear - a notable drawback when the unit is installed in living spaces or utility rooms adjacent to bedrooms. - **Easun Power (China) OEM Product Sold Under the IBC Solar Brand** - The ISolar SMG II is a product line of Easun Power Technology Co., Ltd. (Shenzhen, est. 2012), marketed by IBC Solar as a house-brand offering. Easun Power is classified as an OEM reseller sharing components with multiple Chinese manufacturers. For end customers, this is a relevant factor when evaluating post-sale support and spare parts availability through the German distributor IBC Solar. ## About this series The IBC Solar ISolar SMG II range is designed for off-grid and hybrid systems - ideal for applications where energy independence is crucial, enabling power supply for consumers even with limited grid access. A defining feature of this range is **integrated operation with an energy storage system**, allowing the installation to effectively utilize autarky and stabilize power supply for homes or small businesses. The devices feature **1 MPPT**, simplifying precise maximum power point tracking for a single string of modules - an effective solution for simpler roofs with few planes and no complex orientations. High European efficiency means significantly fewer losses under typical operating conditions in Poland, resulting in better annual energy yield. Practically, **communication and monitoring capabilities** are also important - models in this series are commonly equipped with a WiFi module and service interfaces for diagnostics. For consumer and small commercial applications, **safety features and compliance with installation requirements**, along with clearly defined warranty conditions, will also be key. ## Questions ### What is the IBC Solar ISolar SMG II inverter designed for - is it an off-grid or a hybrid inverter? The ISolar SMG II is a multi-function device that integrates an inverter, an MPPT solar charger, and a battery charger in a single enclosure. It is suitable for both fully autonomous off-grid systems and hybrid configurations that use the utility grid as a backup source. It is a practical solution for vacation cabins, small businesses, and buildings with limited or unreliable grid access. ### Which lithium batteries are compatible with the IBC Solar ISolar SMG II inverter? The ISolar SMG II series supports both lead-acid and lithium batteries, including LiFePO4 and Li-ion chemistries. Communication with the battery management system (BMS) is carried out via the RS485 interface, enabling compatibility with popular battery brands such as Pylontech, JK, and Daly. The inverter automatically adjusts charging parameters to match the requirements of the connected energy storage system. ### How many PV modules can be connected to the ISolar SMG II, and what is the maximum PV input voltage? The ISolar SMG II series features one MPPT input, supporting a single string of photovoltaic modules. In the 5.6 kW model, the maximum PV input voltage is 500 V DC, and the MPPT charging current reaches up to 100 A. This solution is intended for straightforward installations with a single roof orientation, eliminating the need for additional power optimizers or string inverters. ### Can the ISolar SMG II inverter operate without a battery connected? Yes, models in the ISolar SMG II series can operate without a battery when AC grid power is available or when sufficient solar irradiance is present. However, without an energy storage system the inverter operates in a limited mode and will not provide backup power during a grid outage. A battery must be connected to enable full off-grid functionality and energy buffering. ### Can multiple IBC Solar ISolar SMG II inverters be connected in parallel to increase system output power? Select models in the ISolar SMG II series support parallel operation, allowing up to 3 units to be connected together to achieve a higher combined output power. This feature requires the appropriate communication interface to be present in the specific variant. Before expanding an installation, verify in the datasheet of the particular model whether parallel operation mode is supported. ### What is the manufacturer's warranty on inverters in the IBC Solar ISolar SMG II series? The standard warranty on ISolar SMG II series inverters is typically 2 years from the date of purchase. As a distributor, IBC Solar may offer extended service conditions or technical support in the European market. We recommend confirming the current warranty terms with an authorized reseller before purchasing, as they may vary depending on the model and market. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/1-22010G14604-7df02af4d421.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Growatt SPM 3600TL-HU](https://comparepv.com/inverter/growatt-spm-3600tl-hu) | 3.6 kW | 97.6% | 2 | 26.0 kg | 17.0 kg heavier | | [Growatt MIN 3600TL-XH](https://comparepv.com/inverter/growatt-min-3600tl-xh) | 3.6 kW | 97.2% | 2 | 10.8 kg | 1.8 kg heavier | | [Growatt MIN 3600TL-XA](https://comparepv.com/inverter/growatt-min-3600tl-xa) | 3.6 kW | 97.2% | | 10.8 kg | 1.8 kg heavier | | [Growatt MIN 3600TL-XH2](https://comparepv.com/inverter/growatt-min-3600tl-xh2) | 3.6 kW | 97.2% | 2 | 10.8 kg | 1.8 kg heavier | | [GoodWe GW3600N-EH](https://comparepv.com/inverter/goodwe-gw3600n-eh) | 3.6 kW | 97.0% | 2 | 17.0 kg | 8.0 kg heavier | | [Deye SUN-3.6K-SG04LP1-EU](https://comparepv.com/inverter/deye-sun-3-6k-sg04lp1-eu) | 3.6 kW | 97.0% | 2 | 14.0 kg | 5.0 kg heavier | | [Deye SUN-3.6K-SG04LP1-AU](https://comparepv.com/inverter/deye-sun-3-6k-sg04lp1-au) | 3.6 kW | 97.0% | 2 | | Similar on paper | | [Ginlong Solis RHI-3.6K-48ES-5G](https://comparepv.com/inverter/ginlong-solis-rhi-3-6k-48es-5g) | 3.6 kW | 96.8% | 2 | 17.0 kg | 8.0 kg heavier | --- Source: https://comparepv.com/inverter/ibc-solar-isolar-smg-ii-3-6kw