Deye SUN-5K-SG04LP1-BE Hybrid Inverter

The Deye SUN-5K-SG04LP1-BE hybrid inverter: the 5 kW Synergrid model designed for Belgium

The Deye SUN-5K-SG04LP1-BE is a 5 kW single-phase hybrid inverter specifically developed and approved for the Belgian market. Its Synergrid certification is built in from the design stage — this is not simply an adaptation of a generic model, but a product designed to meet the requirements of the Belgian electricity grid. It enables legal grid feed-in, self-consumption with 48V battery storage and automatic backup power supply, all in a compact (17 kg), silent (natural cooling) and IP65-certified enclosure.

Synergrid Belgium: what this means for you in practical terms

Synergrid certification is the mandatory approval issued by Belgian grid operators (Elia, Fluvius, ORES, Sibelga, etc.) for all equipment connected to the electricity grid. Without it, your inverter cannot legally feed into the grid and your grid operator may refuse to commission it.

The Deye SUN-5K-SG04LP1-BE is Synergrid C10/11 certified — this means:

• Guaranteed legal feed-in: your surplus generation is fed into the grid in full compliance
• Eligibility for regional grants: in Wallonia, Brussels and Flanders, certain grants require approved equipment
• Commissioning without obstruction: your network operator cannot refuse the connection
• Compatible digital meter: works with the smart meter mandatory in Belgium from 2024
• Optimised prosumer tax: by intelligently managing feed-in and off-take, you limit the impact of the Walloon prosumer tax

Natural cooling: 100% silent, zero maintenance

This is the most immediately noticeable technical difference in everyday use. The Deye SUN-5K-SG04LP1-BE uses natural convection cooling, with no mechanical fans:

• No noise during operation — install it in a hallway, garage, utility room or even a laundry room without any noise disturbance
• No moving mechanical parts in the cooling system — increased longevity, zero risk of fan failure
• No maintenance required for cleaning filters
• Operates perfectly from -45 °C to +60 °C (derated above +45 °C)
• Noise level below 30 dB in all circumstances

120 A charging current: ultra-fast charging

With 120 A charging and discharging current, the SUN-5K-SG04LP1-BE recharges your battery much faster than a standard inverter:

• A 5 kWh battery (100 Ah / 48V) recharges fully in around 50 minutes — you’ll have a full battery first thing in the morning
• Capable of discharging up to 5,760 W from the battery (120 A × 48V) — well above the inverter’s rated power, ideal for peak consumption
• Overnight charging from the grid during off-peak hours is also faster and therefore more cost-effective

What this inverter actually does

• It converts the energy from your solar panels into 230 V AC electricity with a maximum efficiency of 97.6% and MPPT efficiency exceeding 99%
• It stores the surplus in your 48V battery for use in the evening, at night or during a power cut — with an exceptional charging current of 120 A
• It feedsany surplus energy not stored back into the Belgian grid in full compliance with the law, thanks to its Synergrid certification
• It automatically switches to the battery in the event of a grid outage, with a peak power output equal to twice the nominal power for 10 seconds

With 8 to 10 solar panels (4 to 5 kWp) and a 10 kWh battery, a Belgian home of 100 to 150 m² can achieve 65 to 80% self-consumption, representing an estimated saving of between €800 and €1,200 per year depending on your consumption and tariff.

Use our simulator for a personalised estimate.

Battery compatibility: wide and flexible

The SUN-5K-SG04LP1-BE works with over 34 verified batteries in our catalogue — 48V low voltage:

48V LiFePO4 lithium batteries (recommended):

• Pylontech US2000C, US3000C, US5000, H48050 — native CAN/RS485 BMS communication
• DeLong Top Energy — 5.12 kWh to 15 kWh per module (BYD and CALB cells)
• Leapton EL-A05 — IP65, ideal for damp environments
• And many other compatible 48V brands

48V AGM/Gel lead-acid batteries:

All standard 48V lead-acid batteries

Cost-effective solution for installations on a tight budget

The self-adaptive BMS (RS485/CAN) allows the inverter to automatically adjust its settings according to the connected battery.

Deye advanced features

• Peak shaving: reduces consumption peaks to avoid additional tariff charges
• Time of Use: schedules charging/discharging according to Belgian off-peak hours
• Battery-free mode: operates as a pure grid-tied inverter if you do not yet have a battery
• Generator connection: continuity in the event of a prolonged power cut
• Deye Copilot: AI EMS that automatically optimises energy management
• Remote shutdown: safety in emergencies via the monitoring platform
• OTA updates: remote software updates

Key benefits

1. Flexible power

The SUN-5K-SG04LP1-BE delivers 5 kVA, ideal for homes and small businesses, and caters to different levels of energy consumption.

2. Optimised self-consumption

Maximises the use of solar energy: powers your appliances directly and stores surplus energy in the battery to reduce your reliance on the grid.

3. Smart energy management

Prioritises power supply in real time and recharges the battery when there is surplus solar energy, ensuring a constant supply of electricity.

4. Reliable backup power

Compatible with a generator, ensuring a continuous power supply in the event of a power cut for greater comfort and safety.

5. RS485/CAN communication port

Facilitates monitoring, remote updates and integration with battery management systems.

6. Simplified installation

Intuitive design for quick commissioning, reducing installation time and costs.

7. Advanced monitoring functionality

User-friendly interface to monitor production, consumption and battery status in real time and optimise your savings.

Conclusion

The Synergrid-certified SUN-5K-SG04LP1-BE combines flexible power output with advanced features for optimal energy management. Whether you’re a homeowner or a business, reduce your costs and improve your energy independence with this reliable and durable system.

Main Screen

The LCD touchscreen displays all general information about the inverter.

1 • Central icon: normal operation or error messages (F01-F64).
2 • Displays the time.
3 • System configuration: battery, grid, generator, advanced functions.
4 • Energy flow information (solar, grid, battery). The colours indicate power: green to red depending on the load.

- PV power and load are always positive.
- Grid power: negative = selling, positive = receiving.
- Battery power: negative = charging, positive = discharging.

Explanatory videos

Technical data

Compatibility and Battery Input

Compatible with lead-acid and lithium-ion batteries, 48V voltage, integrated into the BMS.

High Efficiency

Maximum efficiency 97.6%, European efficiency 96.5%, MPPT >99% for optimal conversion.

Rated Power

5 kVA with peaks of up to 2x the rated power for 10 seconds.

Advanced Protection Mechanisms

Protection against DC reverse polarity, AC overvoltage and overcurrent, earth faults and thermal protection.

Compliance with Standards

IEEE 1547.1, EN 62109-1/2, UL 1741.

Operating Range

-40°C to +60°C, up to 2000 m altitude, noise level <30 dB.

Monitoring and Communication

GPRS, Wi-Fi, Bluetooth, 4G, LAN. RS485, RS232 and CAN interfaces for flexible integration.

Physical Specifications

Dimensions

330 mm × 433 mm × 228 mm, compact and easy to install.

Weight

17 kg, easy to handle.

Cooling

Natural cooling for optimal thermal management.

Protection rating

IP65, suitable for indoor and outdoor installations.

Operation with Pylontech batteries

Inverter installation

Advanced features

• Peak Shaving: reducing consumption during peak periods.
• Priority feed-in: optimise sales or consumption.
• Pylontech battery configuration: lithium-ion installation.
• Time of Use: consumption based on time of day.
• Smart charging: optimal energy management.
• Battery-free mode.
• Parallel function: increase capacity via multiple inverters.
• Battery charging with diesel generator: areas without a stable grid.

Warranty and Support

Warranty

5-year warranty for peace of mind and guaranteed reliability.

The Deye SUN-5K-SG04LP1-BE hybrid inverter is a powerful and flexible solution for optimised energy management. With high efficiency, comprehensive protection and advanced control features, it is perfect for your energy storage needs and solar applications. Its intelligent design and robust features make it an excellent choice for modern, sustainable installations.