Description

Deye 4.09kWh High Voltage (HV) Lithium-Ion LiFePO₄ Battery (GB-LM4.0)

The Deye 4.09kWh High Voltage (HV) Lithium-Ion LiFePO₄ Battery (GB-LM4.0) is a compact yet powerful energy storage module designed for high-voltage solar systems. Engineered using advanced Lithium Iron Phosphate (LiFePO₄) cell technology, this battery delivers a reliable, safe, and long-lasting power solution that integrates seamlessly with Deye high-voltage inverters and BOS-G/BOS-H series energy storage platforms.

With a nominal capacity of 4.09kWh, the GB-LM4.0 battery is ideal for residential and light commercial solar installations requiring modular, scalable energy storage. Its high-voltage design allows multiple modules to be combined into a larger battery bank to meet growing energy demands, offering flexibility for future system expansion without replacing existing components.

Built for durability and safety, the Deye GB-LM4.0 incorporates a sophisticated Battery Management System (BMS) that continuously monitors voltage, current, temperature, and state of charge. This smart protection system guards against over-charging, over-discharging, short circuits, and temperature extremes, ensuring dependable performance and extended service life — even in challenging operating conditions.

The high-voltage architecture simplifies system design by reducing current and improving efficiency, enhancing overall energy flow between the battery and compatible Deye inverters. Whether your goal is to maximise solar self-consumption, provide backup power during outages, or enable peak shaving and time-of-use optimisation, the GB-LM4.0 delivers consistent performance and robust reliability.

Compact, rugged, and engineered for professional installations, the Deye 4.09kWh HV Battery is suited for installation in plant rooms, battery cabinets, or containerised systems where space, safety, and scalability are top priorities. Its high cycle life and efficient energy management help minimise total cost of ownership while providing a solid foundation for high-voltage solar energy storage in South African environments.

Technical Specifications

• Brand: Deye

• Model: GB-LM4.0

• Battery Type: Lithium Iron Phosphate (LiFePO₄)

• Nominal Energy Capacity: 4.09kWh

• System Voltage: High Voltage (HV)

• Battery Configuration: Modular, stackable design

• Cycle Life: ≥6,000 cycles @ 80% DoD

• Battery Management System: Advanced integrated BMS

• Communication Interfaces: CAN / RS485

• Scalability: Supports multi-module HV battery stacks

• Installation: Rack or cabinet installation

• Cooling Method: Natural convection

• Protection Features:

  • Over-voltage protection

  • Under-voltage protection

  • Over-current protection

  • Short-circuit protection

  • Over-temperature protection

• Compatible Systems: Deye high-voltage hybrid & storage inverters

• Application: Residential, commercial, industrial solar storage

• Use Case: Solar self-consumption, backup power, peak shaving

 

Frequently Asked Questions

What is the Deye 4.09kWh HV battery used for?

It is used for high-voltage solar energy storage in modular systems requiring scalable capacity.

Can multiple modules be connected together?

Yes, multiple GB-LM4.0 batteries can be stacked for higher capacity.

Is this battery compatible with Deye inverters?

Yes, it integrates with Deye high-voltage hybrid and storage inverters.

What lithium technology does it use?

It uses LiFePO₄ cells for enhanced safety and durability.

Is professional installation necessary?

Yes, professional installation is recommended for safety and system compliance.

What are typical applications?

Solar self-consumption, backup power, and energy storage for commercial and residential systems.

https://smartechs.co.za/home-solar-installation-for-dummies-a-simple-guide-for-homeowners/

 

Why Lithium-Ion (LiFePO4) is the Smart Choice for South Africa.