SunGold Power 51.2V 100AH Server Rack Lifepo4 Lithium Battery

The SunGold Power 51.2V 100AH Server Rack LiFePO4 Lithium Battery Is a 5.12kWh, UL1973-Listed Building Block for 48V Energy Storage

The SunGold Power 51.2V 100AH Server Rack LiFePO4 Lithium Battery (SG48100P) stores 5.12kWh in a standard 3U rack-mount module. It is designed for 48V home and small commercial energy storage systems, where you can start with a few batteries and add more in parallel as your needs grow.

Each module includes a built-in BMS, LED state of charge indicators, and RS232, RS485, and CAN communication for closed-loop operation with compatible inverters. SunGold rates it for 7000 or more cycles at 80 percent depth of discharge and a 15 year design life, and lists UL1973 certification for this model.

SunGold Power 51.2V 100AH Server Rack LiFePO4 Lithium Battery Features

5.12kWh in a 3U Rack Module

At 51.2V and 100Ah, each battery stores 5.12kWh. The 3U form factor fits standard server racks and SunGold's battery racks and cabinets, keeping large battery banks organized.

7000+ Cycle Life and 15 Year Design Life

Lithium iron phosphate cells rated for at least 7000 cycles at 80 percent depth of discharge (0.5C charge and discharge at 77°F) make this battery suited to daily solar cycling.

100A Continuous Charge and Discharge

The battery supports 100A of continuous charge and discharge, with 50A as the standard rate. SunGold recommends operating between 20 and 95 percent state of charge for the longest life.

Scalable Parallel Expansion

SunGold says up to 32 batteries can be paralleled, for as much as 163.84kWh. Most customers start with 4 to 6 batteries. A DIP switch sets each battery's address in a parallel system.

Inverter Communication and Monitoring

RS232, RS485, and CAN ports support multiple communication protocols for closed-loop operation with compatible inverters. Six green LEDs show state of charge, with run and alarm indicators on the front panel.

Real-World Applications

Home solar storage. Store daytime solar for evening use and backup power.

Off-grid homes and cabins. Build a 48V bank sized to your loads with SunGold all-in-one inverters.

Small commercial storage. Scale up to dozens of modules for larger systems.

Backup power. Keep critical loads running through outages.

How It Compares to Common Alternatives

Versus the SGH48100T. The SGH48100T adds self-heating for cold climates. Choose it if the batteries will be in unheated spaces.

Versus the SG48100M wall-mounted battery. The SG48100M stores the same 5.12kWh in a wall-mounted case. The SG48100P is designed for racks and cabinets.

Versus 12V batteries in series. A native 51.2V module with inverter communication is simpler and better suited to 48V inverters.

Is This Battery the Right Fit

• System voltage. 48V systems (51.2V nominal).
• Installation. Indoor, in a rack or cabinet. The battery case is IP20.
• Temperature. Charging from 32°F to 113°F (0 to 45°C).
• Weight. Around 43 kg (about 95 pounds) per module.

This may be a good fit if

• You want rack-mounted 48V storage
• You plan to expand your battery bank over time
• You need inverter communication
• You want UL1973-listed batteries

Common Questions

How Many Batteries Do Most Systems Use?

SunGold says most customers choose 4 to 6 batteries, with up to 32 supported in parallel.

Why Choose a 48V Server Rack Battery?

Higher voltage reduces current and wiring losses, the rack format saves space, and the system scales easily.

What Is the Recommended Charging Voltage?

SunGold lists 54.5V recommended, with a 57.6V charging limit and 43.2V discharge cut-off.

What's Included

• 1, 2, or 4 x SunGold Power 51.2V 100AH Server Rack LiFePO4 Batteries (SG48100P), per selected option
• Per battery: 1 set of positive and negative output cables (25mm² flame retardant, 0.5 m)
• Per battery: 1 x RS485 cascade communication cable (0.5 m)
• Per battery: 4 x M6x16 hanging ear screws
• Per battery: 1 x dry contact terminal
• 1 x Product Manual and Certificate

Scalable 48V Storage You Can Build On

The SunGold Power 51.2V 100AH Server Rack LiFePO4 Lithium Battery gives 48V systems 5.12kWh per module, 7000+ cycles, inverter communication, and room to grow. At Outbound Power, we help customers size battery banks and match them to inverters. If you have questions, our team is happy to help.