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BMS with SMBus/RS485/RS232 Communication for 3S-4S Lithium/LiFePO4 Battery Pack at 15A rate (#1082)

Your Price: RFQ
Mimimum 5qty, Lead time: 6-8 weeks

Product ID # 1082
Part Number:

Items Specifications
Lithium Polymer
Communication Interface SMBus
Capacity Designing battery capacity (PCM) Current Setting:13Ah
(IC can support upto 320Ah, need to order separately)
Max capacity (Battery pack) N/A
Min capacity (Battery pack)  1000mAh
External capacity Indication LCD,LED,SOC 
Gas gauge algorithm  CEDV
Voltage Charging voltage CC/CV:12.6V/16.8V (4.2V/Cell) CC/CV:10.8V/14.4V (3.6V/Cell)
Cell-balance window 50mV±10%
Cell-balance release voltage 20mV±10%
Cell-balance detection delay time 0.5~2s 
Current Balance current for single cell 66mA±5mA 56mA±5mA
Normal operating-mode current
(Gas Gauge IC)
800 uA(Average)
SLEEP operating-mode current
(Gas Gauge IC)
200 uA(Average)
FULL SLEEP operating-mode current
(Gas Gauge IC)
1 uA(Average)
Maximal continuous charging current 15A
Maximal continuous discharging current  15A
Over charge Protection                  Over charge detection voltage 4.25±0.025V 3.80±0.05V
Over charge detection delay time 1~2S 1~2S
Over charge release voltage 4.05±0.05V 3.55±0.05V
Over discharge protection Over discharge detection voltage 2.5±0.07V 2.00±0.05V
Over discharge detection delay time 1~2S 1~2S
Over discharge release voltage 3.0±0.1V 2.7±0.05V
Over current protection Over current detection voltage 0.2±0.015V
Over current detection current 35±10A (adjustable)
Detection delay time 5~60ms
Release condition Cut load, auto recover
Short protection Detection condition Exterior short circuit
Detection delay time 200-800us
Release condition Cut load, auto recover
Resistance Protection  circuitry (MOSFET)
B- to P-
B+ to P+

Temperature protection Charge temperature  protection 60℃±5℃
Charge release temperature 50℃±5℃
Discharge temperature  protection 65℃±5℃
Discharge release temperature 55℃±5℃
Operating Temperature Range -20~+85℃
Storage Temperature Range -40~+125℃
Dimension LxWxT 70x34x6mm
Notes B+:Battery+
SMBD:SMBus data line
SMBC:SMBus clock line
P+:Charge+ / Discharge+
P-:Charge- / Discharge-
Customer can not program the board, we will preset the board according to your battery's specification. Communication via EV2400 or EV2300

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 RS232

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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