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DESCRIPTION

• Overview
• Product Description
• Product Parameters
• Packaging & Shipping
• Project Case
• Certifications
• Company Profile
• FAQ

Overview

Basic Info.

Model NO.	Se-G5.1 Pro B
Size	Medium
Nominal Voltage	51.2V
Electrolyte	Li-ion
Battery Voltage(V)	51.2
Humidity	5%~95%
Altitude	≤2000m
Storage Temperature	0ºC~35ºC
Transport Package	Carton
Specification	440*133*540mm
Trademark	Deye
Origin	China

Packaging & Delivery

Package Size49.00cm * 18.00cm * 57.00cm Package Gross Weight50.000kg

Product Description

Product Description

The Deye SE-G5.1 Pro-B is a high-performance, low-voltage lithium iron phosphate (LiFePO4) battery designed for reliable energy storage in residential, commercial, and off-grid applications. With a nominal capacity of 100 Ah and 5.12 kWh of energy storage, this rack-mounted module delivers efficient power management, ensuring safety, longevity, and scalability for solar energy systems, backup power, and peak-shaving needs. Built with an intelligent Battery Management System (BMS), it provides comprehensive protection against overcharge, over-discharge, short circuits, and temperature fluctuations, making it an ideal choice for sustainable energy solutions.Engineered for versatility, the SE-G5.1 Pro-B supports parallel expansion up to 64 units, achieving a maximum capacity of 327 kWh without complex external setups for up to 32 modules. Its compact 19-inch standard design allows for flexible installation options, including rack-mounted, wall-mounted, or floor-mounted configurations, saving valuable space while maintaining high efficiency.

Key FeaturesSuperior Safety and Reliability: Cobalt-free LiFePO4 chemistry ensures high thermal stability, long lifespan, and minimal risk of fire or explosion. The integrated BMS monitors cell voltage, current, and temperature in real-time, with automatic balancing for extended cycle life.
High Efficiency and Performance: Supports a recommended depth of discharge (DOD) up to 90%, with peak discharge currents reaching 150 A for 2 minutes. Natural cooling and IP20 protection enable operation in wide temperature ranges from -20°C to 55°C.
Scalable and Modular Design: Easily expand your system with up to 64 parallel units for large-scale storage. Auto-networking simplifies setup, and remote monitoring via CAN2.0 or RS485 ports allows for firmware upgrades and real-time diagnostics.
Eco-Friendly and User-Convenient: Made from non-toxic, pollution-free materials, this battery promotes sustainability. It features LED indicators for SOC monitoring and supports USB drive upgrades for hassle-free maintenance.
Versatile Installation: Compatible with 19-inch racks (cabinet depth ≥600 mm), wall, or floor mounting, offering flexibility for space-constrained environments.

Product Parameters

Model	SE-G5.1 Pro-B
Cell Chemistry	LiFePO4
Module Energy(kWh)	5.12
Module Nominal Voltage(V)	51.2
Module Capacity(Ah)	100
Module Dimension(W/D/H,mm)	440×133×540
Module Weight Approximate (kg)	45
IP Rating of Enclosure	IP20
Humidity	5%~95%
Storage Temperature	0ºC~35ºC
Altitude	≤2000m
Cycle Life	≥6000(25ºC±2ºC,0.5C/0.5C,90%DOD,70%EOL)
Communication Port	CAN2.0,RS485
Certification	UN38.3,IEC62619,CE,UK,VDE 2510-50,CEI 0-21,FCC,UL1973,UL9540A
Warranty	10 years

Packaging & Shipping

Project Case

Certifications

Company Profile

FAQ1. What is the Deye SE-G5.1 Pro-B battery used for?
The SE-G5.1 Pro-B is designed for energy storage in solar PV systems, backup power, off-grid applications, and peak-shaving in residential or commercial settings. It helps store excess solar energy, reduce grid dependency, and provide reliable power during outages.2. What is the battery's capacity and voltage?
It has a nominal capacity of 100 Ah, nominal voltage of 51.2 V, and nominal energy of 5.12 kWh. The usable energy is 4.6 kWh with a recommended depth of discharge (DOD) of 90%.3. How many units can be connected in parallel?
Up to 64 units can be connected in parallel, allowing for a maximum system capacity of 327 kWh. For up to 32 modules, no external setup is required, and auto-networking simplifies expansion.4. What safety features does it include?
The battery uses cobalt-free LiFePO4 chemistry for high thermal stability and low risk of fire. It features an integrated Battery Management System (BMS) that protects against overcharge, over-discharge, short circuits, and temperature extremes, with real-time monitoring and automatic cell balancing.5. What are the operating temperature ranges?
For charging: 0°C to 55°C (with optional heating down to -20°C). For discharging: -20°C to 55°C. Storage temperature is 0°C to 35°C, with humidity tolerance from 5% to 95%.6. How long is the cycle life?
The battery offers ≥6000 cycles at 90% DOD, 25°C, and 0.5C charge/discharge rate, ensuring long-term reliability.7. What installation options are available?
It supports rack-mounted (19-inch standard, cabinet depth ≥600 mm), wall-mounted, or floor-mounted configurations for flexible placement in space-limited environments.8. Does it support remote monitoring and updates?
Yes, via CAN2.0 or RS485 communication ports for real-time diagnostics and firmware upgrades. It also includes LED indicators for State of Charge (SOC) monitoring and USB drive support for easy updates.9. What certifications does the battery have?
It is certified to UN38.3, IEC62619, CE, UK, VDE2510-50, CEI 0-21, FCC, UL1973, and UL9540A standards, ensuring compliance with global safety and performance requirements.