24V Outdoor Inverter Lithium Battery BMS: 7-String 15A-250A Li-ion Protection Board

Product Parameters

If you need customized services, please consult customer service for details.

Electrical Characteristics

• Charge Voltage (Li-ion): N(strings) x 4.2V
• Discharge Current (A): 15, 20, 30, 40, 50, 60, 80, 100, 120, 150, 200, 250, 300, 400, 500
• Discharge Overcurrent Protection (A): 50 ±10, 60 ±10, 100 ±20, 160 ±30, 220 ±40, 360 ±50, 500 ±100, 1000 ±200
• Charge Current (A): 8, 10, 15, 20, 25, 30, 40, 50, 60, 75, 100, 125, 150, 200, 250
• Charge Overcurrent Protection (A): 20 ±3, 25 ±3, 45 ±5, 60 ±10, 80 ±10, 140 ±20, 200 ±30, 400 ±100

Protection Features

• Overcharge Protection:
  • Detect Voltage (Li-ion): 4.25 ±0.05V
  • Protection Delay: 1 second
  • Release Voltage (Li-ion): 4.13V, 4.15 ±0.05V
  • Balance Current: 30 ±5mA
• Overdischarge Protection:
  • Detect Voltage (Li-ion): 2.7 ±0.05V
  • Protection Delay: 1 second
  • Release Voltage (Li-ion): 3.0 ±0.05V
• Short Circuit Protection: External load short circuit
• Self Consumption:
  • Working Current: 100~200mA
  • Sleep Current (over-discharge): 0uA

Temperature Range

• Working Temperature:
  • Charge: -20~55℃
  • Discharge: -40~70℃ (Customizable)
• Storage Temperature: -40~85℃

Package Includes

• 1 x Cable
• 1 x Battery Protection Board

(The appearance and weight of products with different currents may vary. Please refer to the actual product received. Thank you for understanding.)

Battery Protection Board Connection Guidelines

1. Special attention: The wire cables of different manufacturers may vary. Ensure to use the matching cables. Note that the colors of B- and P- lines of different manufacturers can differ, so always check B- and P- markings.
2. When connecting the sampling wire cable, do not insert the cable into the BMS. Connect the cable from the total negative electrode B- starting with the fine black line. The second wire (red) is connected to the positive pole of the first string of batteries and continue in sequence to the total positive B+.
3. After connecting, measure the voltage between each pair of adjacent metal terminals on the plug's back side. Check respective voltages for ternary lithium, iron-lithium, and lithium titanate batteries before proceeding.
4. Connect the BMS B-line (blue thick line) to the total battery negative electrode (length should not exceed 40cm).
5. Then, insert the wire cable into the BMS.

Post-Connection Steps

1. Ensure the voltage of battery B+, B- equals the voltage across B+ and P-. If they matches, the BMS functions correctly. Otherwise, re-check the wiring sequence.
2. The positive electrodes of the charging and discharging end are directly linked to the total positive pole B+ of the battery. The wiring method for the same port BMS is for both negative poles to connect at P- point; for branch BMS, charge at C-, discharge at P-.
3. If you encounter any issues, please contact customer service for assistance.