Fronus 5.12kW LD-51 Lithium Battery

Fronus LD-51 5.12kWh Lithium Battery Overview

For buyers comparing the Fronus LD-51 price, this 5.12kWh lithium battery offers a 51.2V energy storage solution for compatible solar systems and backup power applications. The Fronus LD-51 uses LFP battery chemistry, with a nominal voltage of 51.2V and a rated capacity of 100Ah.

One of its key advantages is its discharge capability. The battery supports up to 135A constant discharge at 45°C, making its current-handling capability an important consideration for systems with demanding backup requirements.

It also features built-in WiFi for remote access, cell-level voltage and temperature monitoring, and a user-friendly LCD touchscreen. CAN and RS485 communication interfaces provide options for communication with compatible inverter systems.

With 5.12kWh nominal energy, the LD-51 is suitable for residential and selected commercial solar storage applications, subject to correct system sizing and inverter compatibility.

Fronus LD-51 Key Features and Buyer Benefits

LFP Lithium Battery Technology

The LD-51 uses LFP (Lithium Iron Phosphate) battery chemistry. This battery technology is commonly used in solar energy storage systems.

Its rated capacity of 100Ah and nominal energy of 5.12kWh provide a defined storage capacity for planning household and commercial backup requirements.

135A Constant Discharge Capability

A major feature of this battery is its 135A constant discharge capability at 45°C.

This is particularly relevant when selecting a battery for systems with higher current requirements. Actual connected loads must remain within the battery’s operating limits and the inverter’s capacity.

High-Temperature Operating Capability

The battery supports charging temperatures from 0°C to 55°C and discharging temperatures from -20°C to 55°C.

Its advertised internal temperature tolerance also extends up to 50°C. Proper installation, ventilation and operating conditions remain important for battery safety and service life.

Built-in WiFi and Remote Monitoring

Built-in WiFi provides remote access to battery information. This helps users monitor the system without relying exclusively on the physical display.

Cell-Level Monitoring

The battery provides cell-level voltage and temperature tracking with 10mV cell-level voltage monitoring resolution.

This feature helps users and installers monitor battery cell conditions and assess system operation.

LCD Touchscreen Display

A 3.5-inch LCD touchscreen provides a convenient interface for viewing battery information. Status lights and SOC power indicators provide additional operating information.

Best For

The Fronus LD-51 can be considered for:

• Residential solar energy storage systems.
• Homes requiring battery backup during load shedding.
• Hybrid solar installations with compatible 51.2V battery architecture.
• Commercial applications with suitable battery load requirements.
• Users looking for a 5.12kWh LFP solar battery.
• Solar installers requiring CAN or RS485 communication options.

Final suitability depends on the inverter, connected load, battery configuration and installation conditions.

Not Ideal For

This battery may not be suitable for:

• Systems designed specifically for 12V or 24V batteries.
• High-voltage battery systems requiring a different voltage architecture.
• Inverters without compatible battery communication or configuration.
• Applications requiring continuous discharge beyond the battery’s rated limits.
• Installations exposed to unsuitable water or environmental conditions.

Always check electrical compatibility before connecting the battery.

Battery Capacity: kWh, Ah and Usable Energy Explained

Understanding battery capacity is important when choosing a lithium battery for solar storage.

The Fronus LD-51 has:

• Voltage: 51.2V
• Capacity: 100Ah
• Nominal Energy: 5.12kWh

Ampere-hours (Ah) describe the battery’s electrical capacity, while kilowatt-hours (kWh) describe its nominal energy storage.

The nominal energy helps users understand the overall storage size. However, the actual usable energy depends on the permitted depth of discharge, operating conditions, inverter efficiency and battery settings.

The usable energy should therefore be confirmed before calculating expected backup time.

LFP Lithium Battery Chemistry and Cycle Life

The LD-51 uses LFP battery chemistry and offers a cycle life of more than 6,000 cycles.

The cycle-life rating is based on the following test conditions:

• Temperature: 25°C ± 2°C
• Charge rate: 0.2C
• Discharge rate: 0.2C
• Depth of Discharge: 90%
• End-of-Life capacity: 70%

These conditions are important when interpreting the cycle-life figure. Actual battery life can vary with operating temperature, charging habits, discharge levels and installation conditions.

Battery Management and Monitoring

Battery monitoring helps users and installers keep track of battery operating conditions.

The LD-51 includes:

• Built-in WiFi.
• Cell-level voltage monitoring.
• Cell-level temperature tracking.
• 3.5-inch LCD touchscreen.
• Status light indicators.
• SOC power indicators.
• CAN communication.
• RS485 communication.

The communication interfaces can be used with compatible inverter systems. The correct communication protocol, configuration and connection requirements should be checked before installation.

135A Lithium Battery Charging and Discharging Performance

Charging and discharging limits are important when matching a lithium battery with a solar inverter.

The Fronus LD-51 supports a recommended current of 100A, a maximum charging current of 100A and a maximum discharge current of 135A.

Its peak current capability reaches 200A for 10 seconds at 25°C.

These values help installers determine whether the battery can support the intended load and charging arrangement. The inverter’s battery settings must remain within the battery’s permitted electrical limits.

Fronus LD-51 Inverter Compatibility

The Fronus LD-51 provides CAN and RS485 communication interfaces for compatible solar inverter systems.

However, having these communication ports does not automatically establish compatibility with every inverter.

Before purchasing, check:

• Battery voltage requirements.
• Inverter battery voltage range.
• Maximum charging current.
• Maximum discharge current.
• Supported CAN or RS485 protocol.
• BMS communication configuration.
• Firmware and connection requirements.

Hajvery Solar Energy can help customers check battery and inverter compatibility before purchase.

Installation and IP40 Protection

The battery supports three installation options:

• Wall mounting.
• Floor mounting.
• Rack mounting.

Its enclosure has an IP40 protection rating. This should be considered when selecting the installation location. The battery should be installed in a suitable sheltered environment and protected from water exposure.

It uses natural cooling and has an operating humidity range of 20% to 85% RH, non-condensing.

Correct mounting, ventilation and electrical protection are important for safe operation.

Fronus LD-51 Technical Specifications

Estimated Backup Time

Battery backup time depends on usable energy, inverter efficiency and the total connected electrical load.

The LD-51 provides 5.12kWh nominal energy. However, a reliable runtime estimate requires the permitted usable energy and inverter efficiency.

For accurate backup planning, consider:

• Total connected load in watts.
• Battery discharge limits.
• Inverter conversion efficiency.
• Required backup duration.
• Battery operating temperature.

Do not treat nominal energy as guaranteed AC output energy.

Fronus Lithium Battery Applications in Pakistan

Solar battery storage is particularly useful in Pakistan, where many residential and commercial users want to maintain essential electrical loads during grid interruptions.

The Fronus LD-51 offers 5.12kWh nominal energy, a 51.2V operating architecture and a 135A constant discharge capability at 45°C.

Its built-in WiFi and cell-level monitoring features also provide useful information for users who want to monitor their energy storage system.

For installations in warmer areas, proper ventilation, suitable mounting and compliance with the battery’s operating temperature limits are important.

Fronus LD-51 Price in Pakistan

The Fronus LD-51 price in Pakistan is an important consideration for customers planning a residential or commercial solar battery installation.

The current price of Fronus LD-51 5.12kWh 51.2V 100Ah Lithium Battery in Pakistan is Rs. 176,600 per unit.

Hajvery Solar Energy is a Fronus Official Distributor, providing product information and assistance for customers interested in genuine Fronus solar energy storage products.

For dealers, installers and bulk buyers, contact Hajvery Solar Energy to discuss product availability and purchasing requirements.

Fronus LD-51 Compatibility and Authenticity Check

Choosing the correct lithium battery involves more than matching its nominal voltage with an inverter.

Before purchasing the Fronus LD-51, customers should verify:

• Exact battery model and serial information.
• Battery voltage requirements.
• Inverter communication compatibility.
• CAN or RS485 communication settings.
• Charging and discharging current limits.
• Applicable warranty information.
• Correct installation requirements.

As a Fronus authorized dealer, Hajvery Solar Energy helps customers understand the battery specifications and select suitable storage arrangements.

Warranty

The Fronus LD-51 comes with a 5 Years warranty.

Customers should confirm the applicable warranty coverage, claim requirements and service procedure with Hajvery Solar Energy before purchasing.

Hajvery Solar Energy is an Official Fronus Distributor, helping customers with product enquiries and relevant purchasing guidance.

Before You Buy

Before selecting this battery, consider the following:

1. Inverter Voltage: Confirm that your inverter supports the battery’s 51.2V nominal voltage.
2. Battery Capacity: Check whether 5.12kWh nominal energy meets your backup requirements.
3. Maximum Load: Ensure that the required discharge current remains within the battery limits.
4. Communication: Confirm CAN or RS485 compatibility with your inverter.
5. Charging Requirements: Configure charging current according to the battery limits.
6. Installation Location: Select a suitable wall, floor or rack mounting arrangement.
7. Environmental Conditions: Maintain suitable temperature, humidity and ventilation.
8. Warranty: Confirm the applicable warranty and claim requirements.

Fronus LD-51 Lithium Battery FAQs

1. What is the Fronus LD-51 price in Pakistan?

The current price is Rs. 176,600 per unit. Contact Hajvery Solar Energy to confirm the latest availability.

2. What is the nominal voltage of the Fronus LD-51 battery?

The battery has a nominal voltage of 51.2V and an operating voltage range of 42.4V to 57.6V.

3. What is the capacity of the Fronus LD-51 lithium battery?

It has a rated capacity of 100Ah and nominal energy of 5.12kWh.

4. Which battery chemistry does the Fronus LD-51 use?

It uses LFP (Lithium Iron Phosphate) battery chemistry.

5. What is the maximum discharge current?

The battery supports a maximum discharge current of 135A. Its peak current is 200A for 10 seconds at 25°C.

6. How many cycles does the Fronus LD-51 support?

It offers more than 6,000 cycles under specified test conditions of 25°C ± 2°C, 0.2C charge/discharge, 90% DOD and 70% EOL.

7. Does the Fronus LD-51 support WiFi?

Yes. It includes built-in WiFi for remote access, along with cell-level monitoring and a 3.5-inch LCD touchscreen.

8. What is the warranty period?

The battery comes with a 5 Years warranty.

Buy Fronus LD-51 Lithium Battery from Hajvery Solar Energy

If you are looking for a Fronus lithium battery price in Pakistan, Hajvery Solar Energy can help you explore the Fronus LD-51 and understand its technical requirements.

As an authorized Fronus dealer, Hajvery Solar Energy assists customers with product enquiries, inverter compatibility guidance and purchasing information.

Visit our store in Johar Town, Lahore, or contact our team for details.