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Protection Circuit Module ( PCB ) for 7.4v Li-Ion / 6.4V LFP Battery Pack (2.5A Limit) -For 18650/18500-2S1P battery pack (50 pcs Min) (#6244)

Your Price: $2.75
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This protection circuit is specially designed for 7.4V Li-Ion / 6.4V LiFePO4 Battery pack with 2.5A discharging rate.

Protection Circuit Module Specifications
Model´╝ÜPCM-SM33 series
  For Li-ion For LiFePO4
Charging Voltage (CC/CV) 4.2V/Cell 3.60V/Cell
Over charge detection voltage 4.25±0.025V 3.8±0.025V
Over discharge detection voltage 2.40±0.062V  
Over current detection current 5±1A
Maximal continuous discharging current 2.5A
Current consumption for single cell ≤20uA
Protection  circuitry  resistance (B- TO P-) ≤60mΩ
Dimension 33mm x 14.7 mm

P+ = Charge+ / Discharge +
P- = Charge- / Discharge -


PCB For 7.4V Li-ion

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. 
  • To achieve balance, each cell in battery pack must has equal voltage within tolerance. When charger LED turn Green, allow 30 minutes for pack to balance before use.
  • 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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