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Protection Circuit Module (PCM) with Equilibrium Function & Fuel Gauge for 18.5V Li-Ion Battery Pack (10 Amp limit) (#3387)

Your Price: $27.90
In Stock

Product ID # 3387
Part Number:

Quantity Discounts

5 to 20$27.06
21 to 50$26.50
51 to 100$25.94
101 or more$25.11

This protection circuit is specially designed for 18.5V Li-Ion Battery pack with 10A 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 Board Specifications For 18/18.5V (5S) Li-ion/Li-po Battery  Pack 
Model: PCM-LI18.5V10A
No. Test   item Criterion
1 Voltage Charging voltage DC: 21V CC/CV (4.2V/1cell)
Balance voltage for single cell 4.2V±0.03V
2 Current Balance current for single cell 62mA±5mA
Current consumption for single cell ≤20μA
Maximal continuous Charging current 10A
Maximal continuous discharging current 10A
3 Over charge Protection
(single cell)
Over charge detection voltage 4.325±0.025V
Over charge detection delay time 0.5S-2S
Over charge release voltage 4.075±0.025V
4 Over discharge protection
(single cell)
Over discharge detection voltage 2.50±0.05V
Over discharge detection delay time 100-250mS
Over discharge release voltage 2.9±0.05V
5 Over current protection Over current detection voltage 0.15V±0.015V
Over current detection current 50±8A
Detection delay time   5ms-20ms
Release condition Cut load
6 Short protection Detection condition Exterior short circuit
Detection delay time 200-600us
Release condition Cut load
7 Resistance Protection  circuitry (B- TO P-) ≤40mΩ
8 Temperature Operating Temperature Range -40 to +85℃
Storage Temperature Range -40 to +125℃
9 Weight   22 gram
10 Dimenstion L x W x T 110 x 40 x 9 mm
11 Specification in pdf file Download the 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. 
  • 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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