PCM-S2A5 6.4V5A Balance Function

Protection Circuit Module (PCM) for 2 cells (6.4V) LiFePO4 Battery Pack at 5A limited with Balance Function


Protection Circuit Module (PCM) for 6.4V LiFePO4 Battery  Pack   * Li-Ion 7.2V/7.4V optional
Model: PCM-S2A5 6.4V5A with balance function
Charging Voltage DC: 6.4V, CC/CV (3.2V/Cell)
Balance voltage for single cell 3.60V±0.03V
Balance current for single cell 33±3mA
Over-charge protection voltage 7.70±0.025V
Over-discharge protection voltage for single cell 2.00±0.05V
Over-current detection protection 14±2A
Maximal continuous Charging & Discharging current 5A
Maximal Current consumption for single cell ≤20uA
Protection  circuitry  resistance (B- TO P-) ≤40mΩ
Dimension 65mm(2.56″) x 10mm(0.39″) x 2mm(0.08″)
Weight 0.03 oz (1 gram)
P+/P-/BM P+ = Charge+ / Discharge +
P- = Charge- / Discharge –
BM = Battery Common
Temperature Operating Temperature Range: -40 to 85°C
Storage Temperature Range: -40 to 125°C


The PCM is specially designed for 6.4V Li-Ion Battery pack with 5A discharging rate. Different than normal PCB, it provides balance function after battery pack is fully charged. PCM detects each  voltage and trim higher voltage down until other cells reach the same voltage level. Therefore, it helps Li-Ion cells have longer service life.

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