Sunsynk L5.3 Lithium Battery

The SUNSYNK-L5.3 is a high-performance lithium ferro phosphate (LiFePO₄) battery designed for reliable solar energy storage. It delivers 5.32 kWh nominal capacity with 4.79 kWh usable energy, making it ideal for residential, light commercial, and backup power systems.

Its modular design allows easy system expansion, supporting up to 32 units in parallel for a total storage capacity of up to 170 kWh. This makes it a flexible solution for both small and large energy storage installations.

The battery supports a recommended 50 A charge/discharge current, with a 100 A maximum continuous current and 150 A peak discharge (for 2 minutes). This ensures stable performance even during high load demands.

Built for durability, the SUNSYNK-L5.3 features an IP65-rated enclosure, allowing safe operation in harsh environments. It operates in temperatures from -20°C to +55°C, depending on conditions and configuration. Installation is flexible, supporting both wall mounting and 19-inch cabinet systems.

A built-in LED display shows state of charge (SOC) and system status, making monitoring simple and intuitive. With over 6000 cycles at 90% depth of discharge (DOD) and a total lifecycle energy output of around 16 MWh, the battery offers long-term reliability and efficiency.

Key Features & Specifications

Battery Specifications

• Chemistry: Lithium Ferro Phosphate (LiFePO₄)
• Nominal Capacity: 104 Ah
• Nominal Voltage: 51.2 V
• Operating Voltage Range: 43.2 – 57.6 V
• Total Energy: 5.32 kWh
• Usable Energy: 4.79 kWh
• Recommended DOD: 90%
• Cycle Life: ≥6000 cycles @ 0.5C, 25°C

Performance

• Recommended Current: 50 A
• Max Continuous Current: 100 A
• Peak Discharge: 150 A (2 minutes @ 25°C)

Scalability

• Maximum Parallel Units: 32
• Total Expandable Capacity: Up to 170 kWh

Installation & Design

• Mounting: Wall-mounted or 19-inch cabinet
• Dimensions: 440 × 620 × 135 mm
• Weight: ~46 kg
• LED Indicators: SOC, working status, alarm, protection

Environmental Conditions

• Charge Temperature: 0°C to +55°C (–20°C with heating option)
• Discharge Temperature: –20°C to +55°C
• Storage Temperature: –20°C to +35°C
• Humidity: 5%–95% RH
• Protection Rating: IP65
• Altitude: ≤2000 m

Communication & Certification

• Communication Ports: CAN2.0, RS485
• Certifications: IEC62619, CE, UKCA, CEC, UN38.3

Warranty & Lifespan

• Lifecycle Energy Output: ~16 MWh @ 70% EOL
• Warranty: Based on time or energy throughput