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BMS with SMBus Communication for 6S-15S Li-ion/LiFePO4 Battery Pack at 50A rate (#1428)

Your Price: RFQ
Mimimum 5qty, Lead time: 4-6 weeks

Product ID # 1428
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 continuous discharge current*
Maximum surge discharge current*
Need Display (Prod ID#5171)*
Protection Circuit Module Specifications  For 6S-15S Li-ion/LiFePO4 Battery Pack 
No. Test item(Test at normal temperature 25±2℃ and relative humidity≤90%) Criterion
1 Communication Interface SMBus or I2C or RS485 or RS232
2 Capacity Designing battery capacity(PCM)        10-320Ah
Max capacity(Battery pack) 320Ah
in capacity(Battery pack) 1Ah
External capacity Indication LCD,LED,SOC 
Gas gauge algorithm CEDV
3 Voltage Charging voltage DC: CC/CV
Cell-balance detection voltage(Charge balance) 4.2V±0.03V
Cell-balance release voltage  4.2V±0.025V
Cell-balance detection delay time 0.96~1.4s 
4 Current Balance current for single cell 84mA±5mA
Current consumption for single cell  ≤20μA
Normal operating-mode current(Gas Gauge IC) 650 uA (Average)
SLEEP operating-mode current (Gas Gauge IC) 300 uA (Average)
FULL SLEEP operating-mode current (Gas Gauge IC) 0.1 uA (Average)
Maximal continuous charging current  50A
Maximal continuous discharging current  50A
5 Over charge Protection Over charge detection voltage 4.25±0.025V
Over charge detection delay time 0.5S-2S
Over charge release voltage 4.05±0.05V
6 Over discharge protection Over discharge detection voltage 2.5±0.07V
Over discharge detection delay time 10-30mS
Over discharge release voltage 3.0±0.1V
7 Over current protection Over current detection voltage 0.2±0.015V
Over current detection current 100-120A
Detection delay time  5ms-20ms
Release condition Cut load, auto recover
8 Short protection Detection condition Exterior short circuit 
Detection delay time 200-800us
Release condition Cut load, auto recover
9 Resistance Protection  circuitry (MOSFET) ≤30mΩ
10 Temperature Operating Temperature Range -40~+85℃
Storage Temperature Range -40~+125℃
11 Dimension LxWxT 160x63x12mm
12 Weight 6
13 Notes B+:Battery+,   B-:Battery-
SMBD:SMBus data line,  SMBC:SMBus clock line
P+:Charge & Discharge+, P-:Charge & Discharge-
6S:   B- ->B1->B2->B5->B6->B7->B10 ->B+ ;
7S:   B- ->B1->B2->B3->B5->B6->B7->B10 ->B+ ;
8S:   B- ->B1->B2->B3->B4->B5->B6->B7->B10 ->B+ ;
10S: B- ->B1->B2->B3->B4->B5->B6->B7->B8->B9->B10 ->B+ ;
12S: B- ->B1->B2->B3->B4->B5->B6->B7->B8->B10->B11->B12->B15 ->B+ ;
13S: B- ->B1->B2->B3->B4->B5->B6->B7->B8->B9->B10->B11->B12->
        B15 ->B+ ;
14S: B- ->B1->B2->B3->B4->B5->B6->B7->B8->B9->B10->B11->B12->
        B13->B15 ->B+ ;
15S: B- ->B1->B2->B3->B4->B5->B6->B7->B8->B9->B10->B11->B12->
        B13->B14->B15 ->B+

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: Battery's information can be readable through LCD Display
7. RS485 or RS232/TTL232: We can provide protocol, customer will need to develop a software to read battery's information through computer. You will need SMBus to RS485 and TTL232 Board

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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