About Payment 
 Shipping & Cost
 Battery SDS
 Battery Terminology
 Battery Knowledge
Privacy Policy
 Export restrictions


Shopper Award
Security Verified Seal

Protection Circuit Module (PCM) with Equilibrium Function for 37V Li-Ion Battery Pack at 50A limit (#1124)

Your Price: $159.50
In Stock

Product ID # 1124
Part Number:

Quantity Discounts

5 to 20$154.71
21 to 50$151.52
51 to 100$148.33
101 or more$143.55
 Protection Circuit Board Specifications  For 37V Li-ion/Li-po Battery  Pack 
Model: PCM-LI37V90A
No. Test   item Criterion
1 Voltage Charging voltage DC: 42V CC/CV (4.2V/1cell)
Balance voltage for single cell 4.20V±0.03V
2 Current Balance current for single cell 62mA±3mA
Current consumption for single cell ≤20μA
Maximal continuous Charging current 50A
Maximal continuous discharging current 50A
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 0.65V±0.1V
Over current detection current 140±10A
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-) ≤20mΩ
8 Temperature Operating Temperature Range -40 to +85℃
Storage Temperature Range -40 to +125℃
9 Weight   6.6oz (186 grams)
10 Dimenstion L x W x T Green Board: 127 x 93 x 9 mm
Red Board: 95 x 48 x 8 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.

Related Products

Product Reviews

(0 Ratings, 0 Reviews)
What to consider when designing Lithium Batteries?
Bluetooth Technology for Lithium-ion/LiFePO4 Batteries
UN 38.3 Safety Test

We own a national standard UN38.3 testing lab. We can provide UN38.3 test service to our customer.

If you want to set up your own lab, we also provide UN38.3 & IEC62133 equipments and onsite training. Email us for the quote and lead time.
Lithium Battery Shipping Regulation
Recommendations on How to get ≤30% Rated Capacity for Shipping
Thermal Abuse Test for IEC62133
Mailing Lists