Home->PCM for LiFePO4 Battery Packs ->For 6S~10S Packs (19.2-32V)-> For 9S Packs (28.8V)

Battery Protection Circuit Module (BMS/PCM) for 9S 28.8V LiFePO4 Battery Packs

Part number: HCX-D709

Features and Benefits

 1.Protection Circuit Board for 28.8V 9S LiFePO4 battery pack;

2.PCM applies for 9 cells LiFePO4 battery pack with E-Switch integrated, E-Switch can totally turn off the output;

3.To prevent the battery packs from overcharge,overdischarge,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.

Specifications

Item

Contents

Criteria (Adjustable)

1

Model

HCX-D709 

9S-45A working current

2

Voltage

Charging voltage

32.4V

3

Current

Maximal continuous charging current

30A/5A

Maximal continuous discharging current

30A/45A

Current consumption

50μA

4

Overcharge Protection

Over charge detection voltage

3.6V~3.9V(Adjustable)

Over charge detection delay time

0.5-1.5S

Over charge release voltage

3.5V~3.8V(Adjustable)

5

Over Discharge Protection

Over discharge detection voltage

2.0V~2.5V(Adjustable)

Over discharge detection delay time

0.5-1.5S

Over discharge release voltage

2.0V~2.5V(Adjustable)

6

Over Current Protection

(1st Protection)

Over current detection current

Adjustable

Detection delay time

50-150ms

Release condition

Cut load & charge to recover

7

Over Current Protection

(2nd  Protection)

Over current detection current

Adjustable

Detection delay time

5-15ms

Release condition

Cut load & charge to recover

8

Short Circuit Protection

Short circuit detection current

(actual testing needed)

Detection delay time

200-500us

Detection condition

Cut load/charge to recover

9

Balance

Balance voltage for single cell

4.18V±0.025V

Balance current for single cell

41.8mA±10mA

10

Temperature Protection

Temperature Switch

/

NTC (10KNTC B=3435)

YES

11

Resistance

Inner resistance

30mΩ

12

Temperature

Operating temperature range

0 ~ +85°C

Storage temperature range

0 ~ +85°C

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