Compact 3U rack battery
Small footprint. Full-scale battery intelligence.
A compact 5.12kWh, 51.2V server rack LiFePO4 battery for modular residential solar, backup and off-grid systems.
Designed around real installations
Purpose-built for standard battery racks.
PowerCornet 5 packages a 51.2V 100Ah LiFePO4 battery into a compact 3U, 19-inch enclosure. The format is easy to service, simple to expand and well suited to systems where each battery module should remain independently accessible.
Technology with purpose
Compact does not mean basic.
100A continuous current
The 5.12kWh module supports 5.12kW continuous output and a 6.66kW peak for 25 seconds.
Smart connected BMS
JKBMS JK100, 2A bidirectional active balancing, Bluetooth and communication interfaces support monitoring and inverter integration.
Quiet indoor operation
Passive fanless cooling keeps the battery quiet, with a 125A circuit breaker and aerosol fire suppression integrated into the platform.
Modular by design
Connect up to 16 batteries for 81.92kWh of combined nominal capacity as energy requirements grow.
Ready for everyday energy
Build the system one intelligent module at a time.
CAN, RS485, RS232, Wi-Fi and dry-contact options make PowerCornet 5 a versatile rack battery for professional residential and off-grid system integration.
Where it fits
A modular building block for rack-based solar storage.
PowerCornet 5 is a compact choice for homeowners and installers who want to begin with one 5.12kWh server rack battery and retain a clear expansion path. The 3U format fits standard 19-inch racks and keeps each battery module accessible for service and system growth.
Buyer’s guide
Start with 5.12kWh and scale deliberately.
A single PowerCornet 5 can support a focused backup plan, while multiple modules can build a larger battery bank. The right quantity depends on both energy demand and inverter power, not on a fixed battery count for every home.
Define the first-stage load
List the essential circuits and their operating hours. One 5.12kWh module may suit a compact critical-load system; longer backup windows can require additional modules.
Check the power path
Each module is rated for 5.12kW continuous output. Confirm the inverter’s battery current, DC protection and cable design, particularly when several modules operate in parallel.
Reserve rack and busbar capacity
Plan rack units, ventilation, cable routing, isolation and equal-length connections before expansion. PowerCornet 5 supports up to 16 units for 81.92kWh nominal capacity.
Technical details
The numbers behind the system.
Core specifications for system planning. Confirm inverter settings and final configuration with your installer before commissioning.
- Model
- GP-SR3-5K
- Chemistry
- Prismatic LiFePO4, 16S1P
- Voltage / capacity
- 51.2V / 100Ah
- Nominal energy
- 5.12kWh
- Continuous / peak current
- 100A / 130A for 25 seconds
- Continuous / peak output
- 5.12kW / 6.66kW
- Cycle life
- 6,000+ cycles to 70% EOL
- BMS
- JKBMS JK100
- Communication
- CAN, RS485, RS232, Wi-Fi, dry contact
- Parallel connection
- Up to 16 units / 81.92kWh
- Dimensions
- 148 × 449 × 510mm
- Environment
- IP21 indoor; fanless cooling
Solar battery knowledge
How server rack batteries simplify expansion.
Why 3U matters
Rack units define enclosure height in a standard 19-inch rack. PowerCornet 5 uses 3U, allowing installers to estimate rack space accurately and organize batteries, protection and communications in a serviceable layout.
What 51.2V 100Ah means
Voltage multiplied by amp-hours gives nominal watt-hours: 51.2V × 100Ah equals 5.12kWh. This relationship explains why many 48V solar batteries use a 51.2V nominal LiFePO4 pack.
Why every parallel module must be planned
Parallel expansion increases total storage, but good current sharing depends on consistent cable resistance, approved protection and correct BMS communication. A battery rack is a system, not just a stack of independent boxes.
A precise fit
A 5kWh rack battery made for modular storage.
PowerCornet 5 is designed for searches such as 5.12kWh server rack battery, 51.2V 100Ah LiFePO4 battery and 3U solar battery module for a 19-inch rack.
It is a practical building block for residential battery backup, off-grid solar storage and modular 48V energy systems that need CAN/RS485 inverter communication and straightforward future expansion.
Plan your system
Tell us what you want to power.
Share your inverter model, available space and target backup time. Our team can help you identify the right battery configuration.
Discuss your project
