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BMS D739 for 38.4V 12S LiFePO4 Battery Packs (8A Charge, 35A Discharge)

1. Protection Circuit Board for 38.4V 12S LiFePO4 battery pack;
2. PCM applies for 12 cells LiFePO4 battery pack with E-Switch integrated, E-Switch can totally turn off the output;
3. To prevent the battery packs from over charge, over discharge, over current, over temperature ,short circuit;
4. With cell balance/equilibrium function;
5. Compatible with LiFePO4 cells; 
6. How balancing function works? 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 cells have longer service life.
7. PCM comes with all the voltage detection wires and connectors.
We keep materials in stock only, we need around 3-7 days for samples productions.

Sale Price:$
Quantity Amount
51-100 $43.09
101-200 $42.59
200+ $41.59
Weight:48g Model:
Total cost:

Quantity: (stock:

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Content Criterion
HCX-D739LF12S35A-03/020XY-BAB01 12S-35A working current
Charging voltage 43.2V
Maximal continuous charging current 8A (Charge Over Current≥12A)
Maximal continuous discharging current


Current consumption ≤100uA
Overcharge Protection
Over charge detection voltage 3.75V±0.025V
Over charge detection delay time 700mS-1300mS
Over charge release voltage 3.55V±0.05V
Over Discharge Protection
Over discharge detection voltage 2.20V±0.05V
Over discharge detection delay time 0.7S-1.3S
Over discharge release voltage 2.70V±0.1V
Over Current Protection
(1st Protection)
Over current detection current 70A±10A
Detection delay time 330mS±100mS
Release condition Cut load & charge to recover
Over Current Protection
(2nd Protection)
Over current detection current 140A±20A
Detection delay time 33mS±10mS
Release condition Cut load & charge to recover
Short Circuit Protection
Short circuit detection current 300A-550A
(external resistance ≤ 0.1Ω)
Detection delay time <280uS (fixed)
Detection condition Cut load, automatically recover
Balance voltage for single cell /
Balance current for single cell /
Temperature Protection
NTC (10KNTC B=3435) on discharge 75°C±5°C

NTC (10KNTC B=3435) on charge

Inner resistance ≤20mΩ
Operating temperature range 0~+85℃
Storage temperature range 0~+85℃