Rich Solar Alpha 5 PRO | 51.2 V 100 Ah LiFePO4 Rack Battery | RS-B5121P-5

The Rich Solar ALPHA 5 PRO 51.2 V 100 Ah LiFePO₄ Battery delivers dependable, high-capacity energy storage for residential, commercial, RV, and off-grid systems. Housed in a 48 V server-rack design, it provides over 7 000 cycles, a 10-year warranty, and meets UL1973 & UL9540A safety standards for certified performance and peace of mind.

The ALPHA 5 PRO supports CAN/RS485, making it compatible with many popular inverter brands, simplifying upgrades, reducing extra components, and enhancing system performance and reliability. Power up quickly with three flexible charging options: LiFePO4 battery chargers, solar panels, or generators. From off-grid living to emergencies, keep your home energized and ready for any situation.

Specifications

Electrical Specifications

• Nominal Voltage: 51.2V
• Nominal Capacity: 100Ah
• Minimum Capacity: 99.5Ah
• Nominal Energy: 5120Wh

Operating Specifications

• Charging Voltage: 56V
• Discharging Cutoff Voltage: 44.8V
• Maximum Charging Current: 100A
• Continuous Charge Current: 100A
• Maximum Discharge Current: 100A

Physical Specifications

• Battery Dimensions: 17.7"L × 17.8"W × 5.2"H
• Battery Weight: 99.2 lb
• Server Rack Dimensions: 27.5"L × 27.5"W × 44.1"H (Doesn't include wheel height)
• Server Rack Weight: 224.9 lb

BMS Operation

• Operation Voltage: 43.2~58.4V
• Maximum Charging Current: 100A
• Maximum Discharging Current: 100A
• Maximum Charge Voltage (CC/CV): 57.6V
• Overcharge Protection Voltage (Battery): 58.4V
• Overcharge Protection Release Voltage (Battery): 54V
• Over Discharge Protection Voltage (Battery): 43.2V
• Over Discharge Protection Release Voltage (Battery): 47.2V
• Over Discharge Primary Charge Overcurrent Protection Value: 110A
• First Stage Charge Overcurrent Delay: 1s
• Primary Discharge Overcurrent Protection Value: 110A
• Primary Discharge Overcurrent Protection Delay: 1s
• Secondary Discharge Overcurrent Protection Value: 150A
• Secondary Discharge Overcurrent Protection Delay: 500ms

Temperature Performance

• Charge Temperature: 0.1C@(32°F~50°F); 0.2C@(50°F~68°F); 0.5C@(68°F~77°F); 1C@(77°F~113°F); 0.3C@(113°F~131°F); 0.2C@(131°F~140°F)
• Discharge Temperature: -4°F~149°F (The surface temperature of the cell should not exceed 149°F)
• Storage Temperature: -4°F~113°F 90%RH Max (1 month); 32°F~95°F 90RH Max (6 months)
• Recommended Storage Temperature: 32°F~113°F 85%RH Max (Battery life is reduced at high temperature)

Others

• Certification: UL1973, UL9540A, FCC, UN38.3, MSDS
• Max. Expansion: 15 pcs in parallel
• Communication Ports: RS485 / RS232 / CAN
• Warranty: 10 Years Manufacturer Defect

Downloads

Full Specification

User Manual

Certification

Warranty

Rich Solar Warranty

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