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BMS with SMBus/RS485/TTL232 for 18S-25S Li-ion/LiFePO4 Battery Pack at 150A rate (#12195)

Your Price: RFQ
Mimimum 5qty, Lead time: 6-7 weeks

Product ID # 12195
Part Number:


* denotes required field

Cell's manufacturer and module number*
How many in series and parallel*
What is the capacity of battery pack*
Maximum continous discharge current*
Maximum surge discharge current*
SMBus or RS485 or RS232*
Need Display (Prod ID#5171)*
Protection Circuit Module Specifications  For 18S-25S Li-ion/LiFePO4 Battery Pack 
  • Over Charge Protection / Over Discharge Protection / Over Current Protection / Short circuit Protection / Temperature Protection / Balance Function
  • SMBUS: Voltage/Capacity/Current/Temperature/State of Charge (SOC)/Cycled Life can be read through LCD display
  • RS485 or RS232/TTL232: We can provide protocol, customer will need to develop a software to read battery's information through computer
No. Test item Criterion
1 Communication Interface SMBus
2 Capacity Designed
battery capacity
3 Charge Voltage B+, P-

Li: 4.2V/cell x Number in series
LiFePO4: 3.6V/cell x Number in series

4 Continue charge current B+, P- <151Amp
5 Continue discharge current B+, P- <151Amp
6 Internal resistance B-, P- <5mΩ
7 Cell Balance current 116±10mA
8 System Power consumption Working ≤200uA (+25°C)
SMBus Communication
Sleeping (average)
9 Work temperature   -20 to 85°C
10 Storage temperature   -40 to 125°C
11 Working Humidity   <75%RH
12 Storage Humidity   <85%RH
13 Dimension LxWxT 256x110x15mm
14 Notes

The connection between cells and PCB should followe this order, otherwise it will cause potential damage to the BMS.
18S: B- ->B1->B2->B3->...B15->B18->B19->B20->P+,
No connection on B16 & B17
19S: B- ->B1->B2->B3->...B15->B17->B18->B19->B20->P+,
No connection on B17
25S: B- ->B1->B2->B3->...................................................->B25->P+;


Customer can not program the board, we will preset the board according to your battery's specification.

What we need to know from customer?

1. Cell's manufacturer and module number
2. How many in series and parallel
3. What is the capacity of battery pack
4. Maximum continuous discharge current
5. Maximum surge discharge current
6. SMBus or RS485 or TTL232

For other PCM/PCB, please check our PCM/PCB/BMS/CMB/UPS category


  • If you want to use this protection circuit board for a battery that is less than the rated drain, you must add additional protection device to protect the battery itself. Such as: proper rated polyswitch. 
  • You must be professional in Lithium battery pack to buy the protection circuit board. Misusing may cause battery damage or explode. We are not responsible for any damage caused by user.

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