48V 300Ah Rack Mount Lithium Battery – 15.36kWh Server Rack LiFePO4 Battery
Model #: CXR48300 SKU: CXR-48-300-15kWh
Product Details
Chargex® 48V 300Ah Rack Mount Lithium Battery – 15.36kWh Server Rack LiFePO4
The Chargex® 48V 300Ah Rack Mount Lithium Battery is a high-capacity 15.36kWh LiFePO4 energy storage battery designed for solar energy storage systems, off-grid power systems, backup power installations, and commercial energy storage applications.
Built in a standard rack-mount battery format, this lithium battery integrates easily into battery cabinets and server rack enclosures used in solar and inverter battery systems.
Using advanced Lithium Iron Phosphate (LiFePO4) technology, the battery provides excellent thermal stability, long cycle life, and superior safety compared to traditional lead-acid batteries.
With ≥6000 cycle life, expandable parallel capability, and communication protocols including CAN, RS485, and UART, this battery is ideal for inverter battery banks, solar energy storage systems, and backup power installations.
Key Features
• 15.36kWh Energy Storage Capacity
High-capacity lithium battery delivering 51.2V and 300Ah for large solar and energy storage systems.
• Long Cycle Life
Designed for ≥6000 cycles, providing long service life for solar battery systems.
• Rack Mount Battery Design
Engineered for rack-based battery installations and energy storage cabinets.
• LiFePO4 Safety Technology
Lithium Iron Phosphate chemistry provides excellent thermal stability and enhanced safety.
• High Continuous Power Output
Supports 200A continuous charge and discharge current with 220A peak discharge capability.
• Expandable Battery System
Multiple batteries can be connected in parallel to increase total energy storage capacity.
• Smart Communication Interfaces
Supports CAN / RS485 / UART communication for inverter integration and monitoring.
• Low Self-Discharge
Self-discharge rate less than 3% per month.
Technical Specifications
Nominal Voltage: 51.2V
Rated Capacity: 300Ah
Nominal Energy: 15360Wh (15.36kWh)
Battery Chemistry: LiFePO4
Cycle Life: ≥6000 cycles
Discharge Cut-off Voltage: 47.0V
Charge Cut-off Voltage: 58.4V
Recommended Charge Current: 20A – 50A
Maximum Continuous Charge Current: 200A
Maximum Continuous Discharge Current: 200A
Peak Discharge Current: 220A
Environmental Specifications
Charging Temperature: 0°C – 55°C
Discharge Temperature: -20°C – 65°C
Storage Temperature: 0°C – 45°C
Self-Discharge Rate: <3% per month
Physical Specifications
Case Material: Metal Case
Weight: Approx. 110 kg
Dimensions (L × W × H):
482 × 700 × 266 mm (±2 mm)
Communication Interfaces:
CAN / RS485 / UART
Optional Features:
Bluetooth
WiFi
Display Monitoring
Performance Test Results
20°C Discharge Capacity
Battery charged using standard charging method and discharged at 200A.
Measured discharge capacity must be ≥95% of nominal capacity.
55°C High Temperature Discharge Test
Battery charged using standard method and stored for 5 hours at 55°C ±2°C, then discharged at 200A to cut-off voltage.
Measured discharge capacity must be ≥80% of nominal capacity.
Charge Retention and Recovery
Battery charged using standard method and stored:
• 28 days at normal temperature
• 7 days at 55°C
Capacity retention rate: ≥80%
Capacity recovery rate: ≥90%
Cycle Life Test
Under 20°C ±5°C conditions:
Charge battery at 40A and discharge at 200A to cut-off voltage.
Repeat cycle until retained capacity reaches 80% of initial capacity.
Expected cycle life: ≥6000 cycles.
ELT512300R
Applications
Solar energy storage systems
Off-grid solar power systems
Home backup power systems
Commercial energy storage installations
Telecom backup power
Server rack battery systems
Inverter battery banks
What is a 48V Rack Mount Lithium Battery?
A 48V rack mount lithium battery is a modular energy storage battery designed to fit into a standard 19-inch server rack cabinet. These batteries are commonly used in solar energy storage systems, off-grid power systems, telecom backup power, and commercial energy storage installations.
Rack mount lithium batteries use LiFePO4 (Lithium Iron Phosphate) chemistry, which provides excellent safety, long cycle life, and high efficiency compared to traditional lead-acid batteries.
The 48V battery format has become the industry standard for solar inverters and hybrid energy systems because it allows higher power output with lower current compared to 12V or 24V battery systems.
Advantages of Rack Mount Lithium Batteries
Rack mount lithium batteries offer several advantages for energy storage systems:
Space Efficient Design
The 19-inch rack format allows multiple batteries to be installed in a compact cabinet, making it ideal for home energy storage or commercial installations.
Expandable Energy Storage
Multiple batteries can be connected in parallel to increase system capacity for larger solar systems.
Long Cycle Life
LiFePO4 rack batteries typically provide 4000–6000+ cycles, allowing many years of reliable operation.
High Efficiency
Lithium batteries deliver higher efficiency and faster charging compared to traditional lead-acid batteries.
Integrated Battery Management System (BMS)
Modern rack mount lithium batteries include built-in BMS protection to monitor voltage, temperature, and current for safe operation.
Why 48V Batteries Are Used in Solar Energy Storage
Most modern solar inverters and hybrid inverter systems are designed to work with 48V battery banks because they provide:
• higher power output
• improved system efficiency
• lower cable losses
• safer current levels compared to lower voltage systems
This makes 48V LiFePO4 rack batteries one of the most popular choices for residential and commercial energy storage systems.
Typical Uses for 48V Rack Mount Lithium Batteries
48V rack mount batteries are commonly used in:
• solar energy storage systems
• off-grid solar installations
• home battery backup systems
• telecom backup power systems
• commercial energy storage systems
• server rack battery cabinets
• inverter battery banks
Why Choose a Chargex Rack Mount Lithium Battery
The Chargex 48V 100Ah rack mount lithium battery provides:
• 5.12kWh energy storage capacity
• ≥6000 cycle life
• LiFePO4 lithium iron phosphate chemistry
• CAN / RS485 communication for inverter integration
• standard 19-inch rack mount design
This makes it a reliable solution for solar battery storage, off-grid power systems, and backup power applications.
