Growatt 51.2V 100Ah 5.12kWh Lithium Battery – HOPE 5.5L

GROWATT 51.2V 100Ah 5.12kWh Lithium Battery is a high-capacity LiFePO4 battery solution designed for residential solar energy storage and backup power applications. The HOPE 5.5L-A1 battery provides a nominal voltage of 51.2V, a rated capacity of 100Ah and total energy capacity of 5.12kWh, making it suitable for hybrid and off-grid solar systems where reliable battery storage is required.

The battery system is based on Lithium Iron Phosphate (LiFePO4) battery technology and incorporates a Battery Management System (BMS) for monitoring and protection. According to the manufacturer documentation, the battery provides protection against overcharge, over-discharge, overcurrent, overtemperature, short circuit and other abnormal operating conditions.

GROWATT HOPE 5.5L-A1 51.2V 100Ah Battery

The GROWATT 51.2V 100Ah 5.12kWh Lithium Battery is designed for energy storage systems that require dependable battery capacity in a compact rack-mounted format. With 5.12kWh nominal energy storage, it can be used as part of a home solar backup system, off-grid solar installation or other compatible energy storage applications.

The battery uses a 51.2V nominal operating voltage and has an operating voltage range of 40V to 58.4V. Its maximum charging current is 100A at 25°C, while the maximum discharging current is also 100A at 25°C. The specified maximum peak current is 250A for 150ms.

LiFePO4 Lithium Iron Phosphate Battery

The battery uses LiFePO4 (Lithium Iron Phosphate) chemistry. This technology is widely used in solar energy storage systems because it is designed for rechargeable energy storage applications and can provide a practical solution for daily solar charging and backup power requirements.

Built-in Battery Management System (BMS)

The battery incorporates a Battery Management System to monitor important battery operating parameters. The manufacturer documentation describes voltage, current and temperature detection functions, together with multiple protection functions.

The system monitors individual cell voltage and total battery voltage, charging and discharging current, and multiple temperature points. Protection functions include overcharge, over-discharge, over-voltage, high-temperature, low-temperature and short-circuit protection.

This BMS-based protection architecture is particularly important for solar energy storage because the battery can be connected to compatible inverters and operated as part of an integrated solar backup system.

5.12kWh Energy Storage Capacity

The rated energy capacity of this battery is 5.12kWh. The nominal capacity is 100Ah at 51.2V.

Actual usable backup time depends on several factors, including the connected load, inverter efficiency, battery operating conditions and the battery’s state of charge.

CAN and RS485 Communication

The battery supports CAN and RS485 communication. These communication interfaces allow the battery to communicate with compatible inverter and energy-storage systems.

The manufacturer documentation also specifies dedicated communication interfaces for inverter communication and battery parallel communication. This makes communication between the battery BMS and compatible inverter an important part of system installation.

Expandable Battery Storage

One of the important features of the battery system is its parallel expansion capability. The manufacturer documentation states a maximum parallel number of 48 battery packs.

This means the battery platform can be used for larger energy-storage requirements when properly configured with compatible equipment, communication wiring, protection devices and installation procedures.

The manual provides different configurations for capacity and power expansion, including multiple battery packs connected in parallel.

For larger projects, the exact number of batteries, inverter configuration, circuit-breaker sizing and wiring arrangement should be determined by a qualified solar professional according to the manufacturer’s installation requirements.

Rack-Mount Installation

The battery specification lists Rack Mount as the installation type. The specified battery dimensions are approximately 440 × 480 × 130.5 mm, with a weight of approximately 43 ± 2 kg.

The manual specifies indoor installation and states that the battery should be installed on a level surface. It also describes horizontally mounted stacking configurations, with up to six battery packs supported in the specified bracket-supported arrangement.

Natural Cooling

The battery uses natural cooling according to the technical specifications.

For installation, the manufacturer specifies environmental requirements that should be followed carefully. The installation environment should have an ambient temperature above 0°C and below 40°C, with relative humidity between 10% and 95%.

The battery should not be installed in wet locations, exposed to prolonged direct sunlight or placed in areas with corrosive gases or liquids. The manual specifies indoor installation and advises against installation in bedrooms, living rooms and kitchens.

Battery Protection and Safety

Safety is an important part of any lithium battery installation. The battery system includes multiple protection functions through its BMS. These include overcharge, over-discharge, over-voltage, high-temperature, low-temperature and short-circuit protection.

The manufacturer also recommends using appropriate professional installation procedures. The battery should not be disassembled or installed by unauthorized personnel, and different battery manufacturers, types or models should not be mixed in parallel.

For a solar installation in Bangladesh, proper DC protection, circuit breaker selection, grounding, inverter communication and installation environment should be considered before commissioning the battery.

GROWATT 51.2V 100Ah Lithium Battery for Solar System in Bangladesh

The GROWATT 51.2V 100Ah 5.12kWh Lithium Battery can be considered for residential and solar backup applications in Bangladesh where compatible 48V-class/51.2V battery systems are required.

It can be used in applications such as:

• Residential solar energy storage
• Hybrid solar inverter systems
• Off-grid solar power systems
• Home backup power
• Load-shedding backup systems
• Solar energy storage projects
• Expandable lithium battery banks
• Compatible inverter-based energy storage systems

For customers in Bangladesh, selecting the correct battery size should be based on the appliances that need backup, required backup hours, daily energy consumption and inverter capacity.

Why Choose a 51.2V 100Ah Lithium Battery?

A 51.2V 100Ah battery provides 5.12kWh of nominal energy storage in a compact rack-mounted battery system. Compared with traditional lead-acid battery banks, lithium-based energy storage can provide a more compact solution for modern solar installations.

The battery’s integrated BMS, CAN/RS485 communication, rack-mount design, natural cooling and parallel expansion capability make it suitable for appropriately designed solar energy-storage systems. The technical specifications include CE (EMC), UN38.3, MSDS, RoHS and IEC 62619 listed certifications.