Let’s compare the most popular 48V rack-mounted lithium batteries: BYD, Pylontech, and PowerPlus.

Capacity and Voltage

• Pylontech US5000-B
  • Nominal Capacity: 4800 Wh
  • Usable Capacity: 4560 Wh
  • Nominal Voltage: 48 V
• PowerPlus Energy Eco4840P
  • Nominal Capacity: 4000 Wh
  • Usable Capacity: 4000 Wh
  • Nominal DC Voltage: 51.2 V
• BYD Battery-Box LV Flex
  • Nominal Capacity: 5000 Wh
  • Usable Capacity: 5000 Wh
  • Nominal Voltage: 51.2 V

Discharge and Charge Rates

• Pylontech US5000-B
  • Max Charge/Discharge Current: 100 A
  • Peak Discharge Current: 200 A for 15 sec
• PowerPlus Energy Eco4840P
  • Continuous Discharge Current: 39 A
  • Maximum Discharge Current: 63 A
  • Maximum Charge Current: 63 A
• BYD Battery-Box LV Flex
  • Max Continuous Output Current: 70 A
  • Peak Output Current: 105 A for 5 sec

Temperature and Environmental Conditions

• Pylontech US5000-B
  • Operating Temperature Range (Charge/Discharge): 0°C to 55°C / -10°C to 55°C
  • IP Rating: IP20
• PowerPlus Energy Eco4840P
  • Operating Temperature Range (Charge/Discharge): 0°C to 55°C / -20°C to 60°C
  • IP Rating: IP40
• BYD Battery-Box LV Flex
  • Operating Temperature: -10°C to +50°C
  • IP Rating: IP20

Additional Features

• Pylontech US5000-B
  • Cycle Life: >6,000 cycles
  • Communication: RS485, CAN
• PowerPlus Energy Eco4840P
  • Prospective Fault Current: 250 A for 1ms
  • BMS with cell-level protection and trip current of 200 A
• BYD Battery-Box LV Flex
  • Scalability: Up to 64 units in parallel (max 320 kWh)
  • Communication: CAN/RS485
  • Round-trip Efficiency: ≥95%

Conclusion

• Pylontech US5000-B offers a robust cycle life and peak discharge capability, suitable for applications requiring frequent high-power bursts.
• PowerPlus Energy Eco4840P has a lower nominal capacity but a higher IP rating, making it potentially more suited for harsh environments.
• BYD Battery-Box LV Flex stands out with its scalability options and high round-trip efficiency, ideal for large-scale energy storage projects needing flexible configuration.