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BMS with HDQ, I2C Communication for 37V (10S) Battery Pack at 20A rate (#6763)

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

Product ID # 6763
Part Number:

Protection Circuit Module Specifications  For 37V Li-ion/Li-Po  Battery  Pack 
No. Test item (Test at normal temperature 25±2℃ and relative humidity≤90%) Criterion
1 Communication Interface HDQ or I2C 
2 Capacity Designing battery capacity(PCM) Current Setting: 20Ah
Max capacity(Battery pack) 320000mAh
Min capacity(Battery pack) 800mAh
External capacity Indication LCD,LED
Gas gauge algorithm Impedance Track 
3 Voltage Charging voltage DC: 42V
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 68mA±5mA
Normal operating-mode current(Gas Gauge IC) 145 uA (Average)
SLEEP operating-mode current(Gas Gauge IC) 84 uA (Average)
FULL SLEEP operating-mode current 
(Gas Gauge IC)
30 uA (Average)
Maximal continuous charging current  5A
Maximal continuous discharging current  20A
5 Over charge Protection Over charge detection voltage 4.25±0.025V
Over charge release voltage 4.05±0.05V
Over charge detection delay time 0.5~2S(can adjust)
6 Over discharge protection Over discharge detection voltage 2.5±0.07V
Over discharge release voltage 3.0±0.1V
Over discharge detection delay time 0.5~2S(can adjust)
7 Over current protection Over current detection voltage 0.2±0.015V
Over current detection current 65±5A(can adjust)
Detection delay time 0.5~2S(can adjust)
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) ≤50mΩ
10 Temperature Operating Temperature Range  -40~+85℃
Storage Temperature Range -40~+125℃
11 Dimension LxWxT 63x36x18mm
12 Notes B+:Battery+
SMBD:SMBus data line
SMBC:SMBus clock line

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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