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PCM with Equilibrium & Temperature protection function for 25.9V Li-Ion Battery Pack (15A limit) --- 5 pcs minimum order (#7129)

Your Price: $39.95
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Product ID # 7129
Part Number:

This protection circuit is specially designed for 25.9V Li-Ion Battery pack with 15A discharging rate. Different than normal PCB, it provides equilibrium function after battery pack is fully charged. PCM will detect each cell's voltage and trim higher voltage down until other cells reach the same voltage level. Therefore, it helps Li-Ion cells have longer service life.

Protection Circuit Module Specifications  For 25.9V Li-ion/Li-PO Battery  Pack (7 cells)
Model: PCM-LS7A15T
No. Test   item Criterion
1 Voltage Charging voltage DC:29.4V  CC/CV(4.2V/1Cell)
Balance voltage for single cell 4.20V±0.025V
2 Current Balance current for single cell 75mA±10mA
Current consumption for single cell ≤20μA
Maximal continuous Charging current 5A
Maximal continuous Discharging current 15A
3 Over charge Protection Over charge detection voltage 4.250 ± 0.025 V
Over charge detection delay time 0.5S-2S
Over charge release voltage 4.150 ± 0.050 V
4 Over discharge protection Over discharge detection voltage 2.50 ± 0.080 V 
Over discharge detection delay time 100-250mS
Over discharge release voltage 3.00 ± 0.100 V 
5 Over current protection Over current detection voltage 0.10 ± 0.015 V
Over current detection current 50±10A
Detection delay time   5ms-20ms
Release condition Cut load
6 Short protection Detection condition Exterior short circuit
Detection delay time 100-600us
Release condition Cut load
7 Resistance Protection  circuitry(B- TO P-) ≤40mΩ
8 Temperature Operating Temperature Range -40~+85℃
Storage Temperature Range -40~+125℃
9 Dimension LxWxT L80.5 x W72 x T12 mm
10 Specification in pdf file Download specification  

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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