Home » Products » PCM / BMS » 1-5S » 3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)
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3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)

Model No:PCM-L05S20-E21
Working current:20A
Size:L64*W52*T10mm
Balance:YES
Availability:
Quantity:
  • PCM-L05S20-E21
  • QUAWINTEC/OEM
  • 8507909000
  • Shenzhen, China
  • L/C, T/T, D/P, Western Union, Paypal, Money Gram
  • white box/polybags/at your request outer package:carton
  • 500PCS
  • 500000/Month
Technical parameter

Product name:Protection Circuit Module
Model No:PCM-L05S20-E21
For 3S~5S Lithium-ion/Lithium Polymer/LiFePO4 Battery Packs

Product Feature:
1. Suitable for 3~5 section Lithium-ion/Lithium Polymer/LiFePO4 Battery Packs;
2. Same charging/discharging interface, working current 20A;

3. Overcharge, overdischarge, short circuit, overcurrent, temperature protection, etc.;
4. Temperature switch detects battery temperature and controls discharge MOSFE;
5. The metering IC adopts BQ78350, which can read the parameters such as voltage, capacity, current, temperature and cycle number;
6. SMBus communication protocol;
7. Through the model PCM-LCD001-415 display screen, the required information can be read

Items Specifications
Lithium-ion/Lithium Polymer LiFePO4
Communication Interface I2C,SMBus,Bluetooth,RS232
Capacity Designing battery capacity(PCM)       21Ah
Max capacity(Battery pack) 32000mAh
Min capacity(Battery pack)   100mAh
External capacity Indication LCD,LED,SOC
Gas gauge algorithm CEDV algorithm
Voltage Charging voltage(5S) CC/CV:21V(4.2V/Cell) CC/CV:18V(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 66±5mA 56±5mA
Normal operating-mode current
(Gas Gauge IC)
800 uA
SLEEP operating-mode current
(Gas Gauge IC)
200 uA
FULL SLEEP operating-mode current
(Gas Gauge IC)
1 uA
Maximal continuous charging current 20A
Maximal continuous discharging current 20A
Over charge Protection Over charge detection voltage 4.25±0.025V 3.80±0.05V
Over charge detection delay time 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
Over discharge release voltage 3.0±0.1V 2.7±0.05V
Over current protectio Over current detection voltage 0.2±0.015V
Over current detection current 50±10A(can adjust)
Detection delay time 5~60ms
Release condition Cut load
Short protection Detection condition Exterior short circuit
Detection delay time 200-800us
Release condition Cut load
Resistance Protection  circuitry  (MOSFET)B- to P- ≤20mΩ
Temperature protectio Charge temperature  protection 60ºC±5ºC
Charge release temperature 50ºC±5ºC
Discharge temperature  protection 65ºC±5ºC
Discharge release temperature 55ºC±5ºC
Operating Temperature Range -40~+85ºC
Storage Temperature Range -40~+125ºC
Dimension L64*W52*T10mm

3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)