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Protection Circuit Module (PCB) for 7.4V Li-Ion Battery Pack (3.0A Limit)

Your Price: $2.95
In Stock

Product ID # 2771
Part Number:

Quantity Discounts

5 to 20$2.86
21 to 50$2.80
51 to 100$2.74
101 or more$2.66
Protection Circuit Module Specifications  For 7.4V Li-ion/Li-Po Battery  Pack
Over-charge protection voltage 4.350 ± 0.025V
Over-discharge protection voltage 2.30 ± 0.080V
Over-current protection 7.5~9.5A
Maximal continuous Discharging current 3A
Maximal Current consumption 20uA
Short circuit protection Automatic Recovery
Protection  circuitry  resistance ≤50mΩ
Dimension 40.5mm(1.59") x 6.85mm(0.27") x 2.5mm(0.1")
Weight 0.1oz (3.0g)
Specification Download Specification

For other PCM/PCB, please check our PCM/PCB/BMS/CMB/UPS category


  • 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.

Product Reviews

(2 Ratings, 2 Reviews) Average Rating:
Erik Johnson (Dublin, CA) 10/27/2010 3:50 PM
This board appears to work, however as another reviewer commented the board will not activate even on a fully charged battery. My workaround for this was to solder a micro button between positive input and positive output, so when depressed there is a momentary bypass of the board which somehow kick starts it into action. I think I almost like this.
Works, but has a few quirks
D (San Jose, CA) 1/24/2010 1:04 PM
Appears to work as advertised, however the solder pads for the cell tabs are alarmingly close together. A steady hand is recommended when assembling a pack. Also, if you attach one of these to a battery pack and read zero volts across the output, trying connecting the charger to it (the assembled pack) for a moment, and then checking the output voltage again. It seems that occasionally the board won't activate until its put on a charger, even with fully charged cells attached.
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.
Thermal Abuse Test for IEC62133
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