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Key Features

12kW Rated Power with 13.2kVA Max Output – Delivers reliable three-phase power for homes and small businesses, with 100% unbalanced output support (up to 50% per phase) for handling uneven loads across phases.

Massive 240A Charging/Discharging Current – Industry-leading battery throughput enables rapid energy storage and fast backup readiness, perfect for high-demand scenarios.

48V Low-Voltage Battery Compatible – Works with lithium-ion, LiFePO4, and lead-acid batteries in the 40-60V range. Transformer isolation design ensures enhanced safety and system longevity.

2 MPPT Trackers (2+2 Strings) – Maximizes solar harvesting with 24,000W max PV input, 800V max input voltage, and a wide 200-650V MPPT range for flexible panel configurations.

Scalable Parallel Operation – Up to 10 units can be paralleled for on-grid and off-grid operation, scaling total system power to 120kW.

6 Programmable Time Periods – Schedule battery charging/discharging to optimize energy usage based on time-of-use tariffs.

AC Coupling Support – Retrofits existing solar systems by adding battery storage without replacing legacy inverters.

IP65 Outdoor Rating – Dust-tight and weatherproof for reliable performance in harsh environments.

Built-in WiFi + Remote Monitoring – Monitor and control your system via smartphone app or web interface; optional LAN/4G modules available.

97.6% Max Efficiency – Industry-leading conversion efficiency with >99% MPPT efficiency.

10-Year Warranty – Long-term peace of mind with comprehensive product coverage.

Applications – Where This Inverter Excels

Residential Solar + Storage

Slash your electricity bills by up to 80% while gaining round‑the‑clock backup power. 

Perfect for three‑phase homes with air conditioning, heat pumps, or EV chargers,

 the system intelligently stores solar energy during the day and powers your home at night, automatically switching to battery during peak tariffs or grid outages.

Small Commercial & Business Sites

Reduce operational costs with intelligent peak shaving and time‑of‑use energy management. Ideal for offices, retail stores, workshops, and light industrial facilities, 

it ensures stable three‑phase power for critical equipment, protects against voltage imbalances, and delivers rapid payback through demand‑charge reduction.

Off‑Grid & Remote Installations

Achieve total energy independence with full off‑grid capability. The inverter acts as a seamless UPS, transferring to battery power in under 20 ms during grid failures. 

Trusted for remote cabins, agricultural operations, telecom towers, and off‑grid communities where reliability is non‑negotiable.

Diesel Generator Integration

Create a cleaner, more efficient hybrid microgrid. This inverter can store excess energy from diesel generators, cutting fuel consumption and noise while extending generator life. 

Ideal for remote mining, construction sites, or island grids where fuel is expensive and logistics are challenging.

System Expansion & Retrofits

Future‑proof your energy investment. Easily add battery storage to existing solar arrays via AC coupling – no need to replace your current inverter. 

As your needs grow, simply parallel up to 10 units to scale system capacity from 12 kW to 120 kW, making it the ultimate choice for evolving residential, commercial, and microgrid projects.

Frequently Asked Questions

Q1: What types of batteries are compatible with this inverter?

The Deye SUN-12K-SG05LP3-EU-SM2 is compatible with lithium-ion (Li-ion), lithium iron phosphate (LiFePO4), and lead-acid batteries within a 40-60V voltage range. It supports BMS communication via CAN or RS485 protocols with predefined profiles for seamless integration with major battery brands.

Q2: Can this inverter operate off-grid during a power outage?

Yes. The inverter features automatic UPS-style switchover to off-grid mode during grid failure, ensuring continuous power supply to connected loads. It delivers 2× rated power for 10 seconds to handle startup surges from motors and heavy equipment.

Q3: How many solar panels can I connect?

With 24,000W max PV input power, 2 MPPT trackers supporting 2+2 strings, and a 200-650V MPPT operating range, you can connect a substantial solar array. The exact number depends on panel wattage and string configuration—consult your installer for optimal sizing.

Q4: Can I monitor the system remotely?

Absolutely. The inverter comes with a factory-installed WiFi module for remote monitoring and control via smartphone app or web portal. Optional LAN and 4G communication modules are also available for alternative connectivity.