Deye SUN-6.6K-OG03LP1-EU-AM2 6.6kW Off-Grid Inverter

The Deye SUN-6.6K-OG03LP1-EU-AM2 is part of Deye's latest generation of single-phase low-voltage off-grid inverters, designed to deliver reliable, flexible and intelligent power for residential and small commercial energy systems.

With support for lithium-ion and lead-acid batteries, dual MPPT solar inputs, high battery charge and discharge capability, generator integration and advanced remote monitoring, the OG03 series is designed for modern off-grid, backup and energy independence applications.

Its compact and lightweight design makes installation easier, while IP65 protection allows the inverter to operate reliably in demanding environments.

Key Features and Benefits

High Solar Input Capacity

The SUN-6.6K-OG03LP1-EU-AM2 supports up to 13,200W of PV access power, allowing up to 2 times PV oversizing for improved solar energy harvesting throughout the day.

Maximum PV input power: 10,560W

Maximum PV input voltage: 500V

Start-up voltage: 125V

MPPT voltage range: 150-425V

Rated PV input voltage: 370V

Dual MPPT with 2 independent PV inputs

Maximum PV operating current: 18A + 18A

Maximum PV short-circuit current: 27A + 27A

This makes the inverter suitable for modern high-current PV modules and allows greater flexibility when designing solar arrays.

Powerful 6.6kW AC Output

Rated AC output power: 6,600W

Rated output voltage: 230V, L + N + PE

Output frequency: 50Hz / 60Hz

Pure sine wave output

THDi below 3%

The inverter can provide up to 200% of rated power for 10 seconds, making it suitable for loads with high starting currents such as pumps, motors, compressors and refrigeration equipment.

High Battery Charge and Discharge Performance

The inverter supports both lithium-ion and lead-acid battery systems.

Battery voltage range: 40-60V

Maximum charging/discharging current: 140A

Lithium battery charging strategy: Self-adaptive BMS communication

This high-current battery interface allows the inverter to deliver strong battery charging and discharging performance for demanding backup and off-grid applications.

Grid and Generator Support

The OG03 series supports both grid and generator AC input, giving the system greater flexibility when solar or battery energy is insufficient.

Maximum AC input power to battery: 6,600W

Grid input current: up to 50A

Generator input current: up to 50A

This makes the inverter suitable for homes, farms and remote installations where generator backup may form part of the energy system.

Fast 4ms Switching

The OG03 series provides approximately 4ms on-grid/off-grid switching, helping maintain continuous power supply to connected loads during changes in the power source.

Up to 16 Inverters in Parallel

For larger systems, up to 16 OG03 inverters can be connected in parallel, allowing the system to be expanded as power requirements increase.

High Efficiency

Maximum efficiency: 97.6%

Euro efficiency: 96.5%

MPPT efficiency: above 99%

The high conversion efficiency helps reduce energy losses across solar, battery and AC operation.

Smart Monitoring and Communication

Built-in LCD display

WiFi and Bluetooth

RS485 communication

CAN communication

Compatible with lithium battery BMS communication and remote monitoring systems.

Compact and Durable Design

IP65 protection rating

Operating temperature: -40 C to +60 C

Derating above 45 C

Maximum installation altitude: 3,000m

Noise level: below 46dB

Intelligent air cooling

Dimensions: 323 × 424 × 176mm

Weight: approximately 8.6kg

The new lightweight design makes the OG03 significantly easier to transport and install while maintaining outdoor-rated protection.

Integrated Protection

The SUN-6.6K-OG03LP1-EU-AM2 incorporates multiple electrical protection functions, including:

• DC reverse polarity protection
• AC output overcurrent protection
• Thermal protection
• AC output overvoltage protection
• AC output short-circuit protection
• DC component monitoring
• Insulation impedance detection
• Type II DC surge protection
• Type II AC surge protection

These integrated protections help improve system reliability and electrical safety.

Applications

Ideal for:

• Residential off-grid solar systems
• Home backup power systems
• Farms and agricultural installations
• Small businesses
• Rural properties
• Remote buildings
• Generator-supported solar systems
• Energy independence applications

Warranty and Certification

Standard 5-year warranty

Safety and EMC standards include:

IEC 62109-1/-2

EN 61000-6-1

EN 61000-6-2

EN 61000-6-3

EN 61000-6-4

What's in the box
1 x Deye SUN-6.6K-OG03LP1-EU-AM2 6.6kW Off-Grid Inverter
1 x User Manual
1 x Installation Accessories Pack